Letter 6173 is different: it generally requires a written response within about 30 days, and ignoring it can trigger an examination. But “no response required” is not the same as “nothing to do.”

The letter you received tells you how urgently the IRS is looking, not whether your returns are actually correct. That second question is the one that matters. Call (415) 968-1780 for a privileged consultation.

The IRS has sent several different cryptocurrency letters, and they are easy to mix up. The number in the corner of the page decides whether a deadline is running against you right now, so the first step is simply knowing which letter you are holding. This guide breaks down the differences and tells you what to do with each.

The quick comparison

Letter 6174: no response, but a real signal

Letter 6174 is the mildest of the three. It is educational, it alleges no specific error, and it requires nothing from you. If your crypto was reported accurately, you can file it away. T

he reason it still matters is that the IRS does not send these at random. It sends them because it received third-party information, usually from an exchange, tying you to digital-asset activity. If your reporting had gaps, the letter is a quiet, deadline-free chance to fix them before the IRS escalates.

Letter 6174-A: still no deadline, slightly sharper edge

Letter 6174-A looks almost identical to 6174 and also requires no response, but the wording carries a stronger hint that the IRS suspects your reporting may be incomplete, and it signals that follow-up action is possible. Treat 6174-A as a clearer nudge to review your prior returns than 6174. The absence of a deadline is an opportunity to get ahead of a problem, not a sign that one does not exist.

Letter 6173: this one has a clock

Letter 6173 is the serious one. Here the IRS is telling you it believes your returns are incomplete or incorrect, and it generally requires a written response within about 30 days. Your options usually include filing missing or amended returns, or submitting a statement, under penalties of perjury, explaining why you believe you already complied.

Ignoring a 6173 is itself a problem, because non-response can move the matter toward an examination. If you are holding a 6173, do not improvise. The response and its timing both carry weight, and this is the point to involve a tax attorney.

And a CP2000 is a different animal

If what you received is a CP2000 rather than a 6173 or 6174, you are a step further along. A CP2000 is not a soft letter; it is a proposed adjustment showing a calculated balance due because the IRS’s data did not match your return, and it carries a firm deadline. It is not a final bill, and the proposed numbers are often wrong or incomplete, but it must be answered on time and carefully.

The question that actually matters

Whichever letter you received, the deadline on the page is the smaller issue. The larger one is whether your past crypto reporting was complete and correct. A 6174 with accurate returns behind it may need no action at all. A 6174 sitting on top of years of unreported trades is a problem that will not improve with time, deadline or no deadline, because the IRS already has the underlying data.

The letter tells you how fast the IRS is moving. Your records tell you how exposed you are. Sort out the second question, ideally under attorney-client privilege, and the right response to the letter follows from it.

What to do next

Start by confirming which letter you have, then get your prior-year crypto position reviewed before you respond or amend. For the full picture of what Letter 6174 means and your options, see our hub guide, IRS Letter 6174 (crypto): what it means and what to do.

For how the firm defends matters that have already reached examination, see crypto tax audit defense and our cryptocurrency accounting and audits practice.

In one federal matter, two IRS Notices of Deficiency proposing more than $557,000 across six years were settled in U.S. Tax Court down to roughly $38,000, and with avoided interest and California exposure the client effectively saved over $1.2 million. Results depend on specific facts. Past results do not guarantee future outcomes.

Talk to a crypto tax attorney

If you are unsure which letter you received or what your exposure is, get a privileged assessment before you act. Schedule a paid, privileged consultation with Kugelman Law by calling (415) 968-1780 or visiting our contact page.

Frequently asked questions

Do I have to respond to IRS Letter 6174?

No. Letter 6174 does not require a response and carries no deadline. It is an educational letter telling you the IRS has information about your cryptocurrency activity. If your returns were accurate, no action may be needed; if they were not, you should address the gap even though nothing is formally due.

What is the difference between Letter 6174 and 6174-A?

Both are soft letters that require no response. The difference is tone: 6174-A more directly suggests the IRS believes your reporting may be incomplete and that it may follow up, while 6174 alleges no specific error. Treat 6174-A as the stronger warning.

Does Letter 6173 require a response?

Yes. Letter 6173 generally requires a written response within about 30 days, and non-response can trigger an examination. You may need to file missing or amended returns or submit a signed explanation. Because the response and its timing both matter, this is the point to involve a tax attorney.

What happens if I do nothing after a 6174 or 6174-A?

If your reporting was correct, likely nothing. If it was not, the issue does not disappear. The IRS already has the data, and the matter can escalate to a 6173, a CP2000, or an audit. Addressing a known gap early keeps the timing in your control.

Is a crypto letter the same as being audited?

No. None of these letters is an audit by itself. They are compliance and matching notices. They can, however, precede an examination if a real reporting problem exists and goes unaddressed.

About the author

Alex Kugelman is the founder and managing attorney of Kugelman Law and is nationally recognized for cryptocurrency tax. He has spoken on digital-asset tax and IRS enforcement on the Bitcoin.tax podcast and The Mark Milton Show. With nearly two decades of federal tax controversy experience, he is admitted in California and before the U.S. Supreme Court, the U.S. Tax Court, and the U.S. District Court for the Northern and Eastern Districts of California, and served as San Francisco Chair of the Federal Bar Association Tax Division in 2018. For matters that reach into IRS examinations, his colleague Otto Bosch, a former IRS Revenue Agent from the Global High Wealth group, leads the firm’s federal audit-defense work.

This article is attorney advertising and general information, not legal advice. Whether a given letter requires action, and which compliance path fits, are fact-specific legal determinations. Contacting Kugelman Law does not create an attorney-client relationship.

The FBAR (FinCEN Form 114) goes to the Treasury Department and reports foreign financial accounts once they top $10,000 in total. Form 8938 is a FATCA form filed with your income tax return, it reports a broader set of foreign assets, and its thresholds are higher and depend on where you live and how you file.

If you cross both thresholds, you report the same accounts twice, on two forms, to two different parts of the government. This article explains the differences and who files what. To review your situation with counsel, call (415) 968-1780.

FBAR vs. Form 8938 at a glance

The two filings overlap but are not the same. Here is how they compare:

What each form actually reports

The FBAR is focused: it reports foreign financial accounts, meaning bank accounts, brokerage and securities accounts, foreign mutual funds, and certain foreign pension or cash-value insurance accounts held at an institution outside the United States. We cover the account rules in detail in FBAR filing requirements.

Form 8938 reaches wider. It reports “specified foreign financial assets,” which include the same foreign accounts plus other assets that are not held in an account at all: foreign stock or securities you hold directly, an interest in a foreign entity, and foreign financial instruments or contracts with a non-U.S. counterparty.

A useful rule of thumb is that a directly held foreign investment, such as shares in a foreign company held outside a brokerage account, can be reportable on Form 8938 even though it never appears on an FBAR. Neither form, it is worth noting, reports directly held foreign real estate or personal physical assets, though real estate held through a foreign entity can bring the entity interest into Form 8938.

The Form 8938 thresholds are higher and depend on where you live

Unlike the flat $10,000 FBAR threshold, Form 8938 thresholds vary by filing status and residence. For taxpayers living in the United States, the filing requirement generally starts when specified foreign assets exceed $50,000 on the last day of the year or $75,000 at any point for a single filer, with the figures roughly doubling for married taxpayers filing jointly.

For taxpayers living abroad, the thresholds are much higher, generally starting around $200,000 at year-end or $300,000 at any time for a single filer, and again roughly double for joint filers. Because the numbers are adjusted and applied to specific facts, confirm the current thresholds for your filing status before relying on them.

Why many people file both

The reason both forms so often apply is that their coverage overlaps in the middle. A taxpayer with, say, $120,000 spread across two foreign bank accounts and a foreign brokerage account is over the $10,000 FBAR threshold and over the domestic Form 8938 threshold at the same time, so the same accounts get reported on both forms.

Filing one does not satisfy the other, and there is no credit for having filed the other form. When in doubt, the conservative and common approach is to review both tests separately.

What about cryptocurrency?

Crypto adds a wrinkle to both forms. For the FBAR, an account holding only virtual currency is not currently reportable, though most exchange accounts also hold cash-like assets that make the whole account reportable, and the rules are changing. Form 8938 treatment of directly held crypto is likewise unsettled. We work through both in Crypto FBAR: Reporting Cryptocurrency on Foreign Exchanges.

The penalties for getting it wrong

Both forms carry serious penalties, which is why the conservative approach usually wins. FBAR penalties reach roughly $16,500 per report for non-willful violations and far more when a violation is willful, a subject we cover in FBAR Penalties: Willful vs. Non-Willful and How to Reduce Them.

Form 8938 carries a $10,000 failure-to-file penalty that can climb to $50,000 for continued failure after IRS notice, along with a 40% accuracy-related penalty on any understatement tied to an unreported asset, and a failure to file Form 8938 can keep the statute of limitations open on your whole return. The figures adjust over time, so confirm current amounts.

What to do if you missed one or both

Missing these filings is common and fixable, but the right correction depends on whether the failure was non-willful or willful. Non-willful taxpayers may be able to use the Streamlined Filing Compliance Procedures or the Delinquent FBAR Procedures, while cases involving possible willfulness point toward the formal IRS Voluntary Disclosure Practice.

Do not quietly back-file without advice. The disclosure path is a decision to make with an attorney, under privilege, before you file anything. For the full picture, see our offshore and international tax attorney page.

How Kugelman Law helps

We advise U.S. taxpayers on foreign-account and foreign-asset reporting and represent them when a filing is missed or a penalty is assessed, from sorting out which forms apply to correcting past years and defending penalties.

Our results reflect what disciplined advocacy achieves in high-stakes tax disputes. In one federal matter, two IRS Notices of Deficiency proposing more than $557,000 across six years were settled in U.S. Tax Court down to roughly $38,000, and with avoided interest and California exposure the client effectively saved over $1.2 million. Results depend on specific facts. Past results do not guarantee future outcomes.

Talk to an attorney about your foreign-reporting obligations

If you are not sure whether you owe an FBAR, a Form 8938, or both, get a privileged assessment before you file. Schedule a paid, privileged consultation with Kugelman Law by calling (415) 968-1780 or visiting our contact page.

Frequently asked questions

Do I have to file both the FBAR and Form 8938?

Often, yes. They are separate filings with different thresholds, and many taxpayers exceed both. If your foreign accounts top $10,000 at any point in the year, you file an FBAR, and if your specified foreign assets also exceed the Form 8938 threshold for your filing status, you file that form too. One filing does not satisfy the other.

What is the difference between the FBAR and Form 8938?

The FBAR (FinCEN Form 114) is filed with the Treasury and reports foreign financial accounts once they exceed $10,000 combined. Form 8938 is a FATCA form filed with your tax return, reports a broader set of specified foreign financial assets, and has higher thresholds that vary by filing status and whether you live in the U.S. or abroad.

What are the Form 8938 filing thresholds?

For taxpayers living in the U.S., the requirement generally starts above $50,000 in specified foreign assets at year-end or $75,000 at any time for a single filer, roughly doubling for joint filers. For taxpayers living abroad, the thresholds are much higher, generally starting around $200,000 at year-end or $300,000 at any time for a single filer. Confirm the current figures for your filing status.

Does Form 8938 report assets the FBAR doesn’t?

Yes. Form 8938 covers specified foreign financial assets beyond accounts, such as directly held foreign stock or securities and interests in foreign entities, which can be reportable on Form 8938 even when they never appear on an FBAR. Neither form reports directly held foreign real estate.

What happens if I file one but not the other?

You can still face a penalty for the form you missed. The filings are independent, so satisfying the FBAR does not excuse a missing Form 8938 or vice versa. If you have missed either, the correction path depends on whether the failure was non-willful or willful, and should be chosen with an attorney.

About the author

Alex Kugelman is the founder and managing attorney of Kugelman Law, with nearly two decades of federal tax controversy experience including U.S. Tax Court and U.S. District Court litigation. He is admitted in California and before the U.S. Supreme Court, the U.S. Tax Court, and the U.S. District Court for the Northern and Eastern Districts of California, and served as San Francisco Chair of the Federal Bar Association Tax Division in 2018. He is nationally recognized for cryptocurrency tax and has been quoted in the Financial Times and the New York Post on California tax enforcement. For matters that reach into IRS offshore examinations, his colleague Otto Bosch, a former IRS Revenue Agent from the Large Business & International division, leads the firm’s federal audit-defense work.

This article is attorney advertising and general information, not legal advice, and it describes rules and thresholds that can change. Foreign-reporting obligations are fact-specific. Contacting Kugelman Law does not create an attorney-client relationship.

The FBAR is FinCEN Form 114, and it is filed electronically, separately from your tax return. What trips people up is not the threshold but the definitions, because “U.S. person,” “foreign financial account,” and “signature authority” all reach further than most people expect.

This article explains who must file and what counts. To review your accounts with counsel, call (415) 968-1780.

What is the FBAR?

The FBAR, short for the Report of Foreign Bank and Financial Accounts, is an annual report of your foreign financial accounts filed on FinCEN Form 114 through the Treasury Department’s BSA E-Filing System. It is not part of your Form 1040, and filing your tax return does not satisfy it.

The obligation comes from the Bank Secrecy Act, not the Internal Revenue Code, which is one reason it is so easy to miss and why the penalties for skipping it are handled differently from ordinary tax penalties.

Who must file an FBAR?

Any “U.S. person” who meets the account and threshold tests must file. A U.S. person includes far more than U.S. citizens living in the United States. It covers:

• U.S. citizens, wherever they live, including citizens who have never lived in the United States.
• U.S. resident aliens, including green-card holders and anyone who meets the substantial-presence test.
• Entities formed under U.S. law, including corporations, partnerships, and limited liability companies.
• U.S. trusts and estates.

If you are a U.S. person under any of these categories and you cross the account and threshold tests below, the filing requirement applies regardless of whether you owe any tax on the accounts.

What counts as a foreign financial account?

The FBAR reaches a broad set of accounts held at a financial institution located outside the United States. The most common reportable accounts are:

• Foreign bank accounts, including checking, savings, and time deposits.
• Foreign securities and brokerage accounts.
• Foreign mutual funds and similar pooled funds.
• Certain foreign retirement or pension accounts, and certain foreign life insurance or annuity policies that have a cash value.

Location is what makes an account “foreign.” An account is foreign if the financial institution is outside the United States, even if the institution is a branch of a U.S. bank, and even if the account holds U.S. dollars. Conversely, a U.S. branch of a foreign bank is generally not a foreign account. The currency in the account and the nationality of the bank are not the test; where the account is maintained is.

The $10,000 threshold is an aggregate, not a per-account number

You must file if the combined highest value of all your foreign accounts exceeds $10,000 at any single moment during the year. This catches people who assume each small account is below the line.

Five accounts holding $3,000 each never individually cross $10,000, but together they total $15,000, so all five are reportable. And it is the highest balance at any point in the year that counts, not the year-end balance, so a large deposit that passed through an account in March can trigger the requirement even if the account was nearly empty by December.

Once you cross the threshold, you report every foreign account you have, including the ones well under $10,000.

Financial interest versus signature authority: both can require a filing

Two different relationships to an account can trigger the FBAR, and the second surprises people constantly.

A financial interest means you are the owner of record or hold legal title, or the account is held by someone acting on your behalf, or through an entity you substantially own. This is the obvious case.

Signature authority means you can control the disposition of the account by direction to the institution, even if you have no ownership stake and none of the money is yours.

A common example is a corporate officer, an employee, or a nonprofit board member who can sign on the organization’s foreign accounts. That person may have to file an FBAR reporting accounts they do not own. Signature authority over a family member’s foreign account, or over a foreign business account, can create the same duty. There are limited exceptions for certain officers and employees, but they are narrow, so do not assume you are covered by one.

When is the FBAR due?

The FBAR is due April 15, with an automatic extension to October 15. You do not need to request the extension; it applies automatically. The FBAR is filed electronically through the BSA E-Filing System, and a spouse can sometimes be included on a single filing, though separate filings are often cleaner. Because the FBAR is separate from your tax return, filing or extending your 1040 has no effect on the FBAR deadline.

How the FBAR differs from Form 8938 (FATCA)

The FBAR is not the only foreign-account filing. Form 8938, the FATCA statement of specified foreign financial assets, is a separate form filed with your tax return, with higher thresholds that start at $50,000 for many taxpayers and rise for those who are married or living abroad. Many people have to file both, reporting the same accounts twice on two different forms to two different parts of the government. We break down the overlap and the different thresholds in FBAR vs. Form 8938: Do You Have to File Both?

What about cryptocurrency on foreign exchanges?

Crypto has its own wrinkle. As the rules stand for the 2026 filing season, an account holding only virtual currency is not currently FBAR-reportable, but most foreign-exchange accounts also hold fiat or cash-like assets, which usually makes the whole account reportable, and the rules are changing. We cover this in detail in Crypto FBAR: Reporting Cryptocurrency on Foreign Exchanges.

What happens if you should have filed and did not?

Missing an FBAR is common and fixable, but the right correction depends on why you missed it. Non-willful taxpayers may be able to use the Delinquent FBAR Procedures or the Streamlined Filing Compliance Procedures, while cases involving possible willfulness point toward the formal IRS Voluntary Disclosure Practice. The penalties for getting this wrong are severe, which we cover in FBAR Penalties: Willful vs. Non-Willful and How to Reduce Them, and the disclosure decision is one to make with an attorney, under privilege, before you file anything. Do not quietly back-file FBARs without advice; a quiet fix can raise more questions than it answers.

How Kugelman Law helps

We advise U.S. taxpayers on foreign-account reporting and represent them in FBAR matters, from determining what is reportable to correcting missed filings and defending penalties. For the full picture of offshore compliance and disclosure options, see our offshore and international tax attorney page.

Our results reflect what disciplined advocacy achieves in high-stakes tax disputes. In one federal matter, two IRS Notices of Deficiency proposing more than $557,000 across six years were settled in U.S. Tax Court down to roughly $38,000, and with avoided interest and California exposure the client effectively saved over $1.2 million. Results depend on specific facts. Past results do not guarantee future outcomes.

Talk to an attorney about your FBAR obligations

If you are unsure whether you have to file an FBAR, or you think you missed one, get a privileged assessment before you act. Schedule a paid, privileged consultation with Kugelman Law by calling (415) 968-1780 or visiting our contact page.

Frequently asked questions

Who has to file an FBAR?

Any U.S. person, meaning U.S. citizens (wherever they live), resident aliens including green-card holders, and U.S. entities, trusts, and estates, who has a financial interest in or signature authority over foreign financial accounts whose combined value exceeds $10,000 at any point during the year. The filing is required whether or not you owe tax on the accounts.

What is the FBAR filing threshold?

You must file if the combined highest balance of all your foreign financial accounts exceeds $10,000 at any single time during the calendar year. It is an aggregate figure across all accounts, and it is based on the highest value during the year, not the year-end balance. Once you cross it, you report every foreign account, including those under $10,000.

Do I have to file an FBAR for an account I don’t own?

Possibly, yes. Signature authority over a foreign account, such as a corporate officer or employee who can direct an employer’s foreign accounts, can trigger an FBAR filing even when none of the money is yours. Limited exceptions exist for certain officers and employees, but they are narrow.

When is the FBAR due?

April 15, with an automatic extension to October 15 that you do not have to request. The FBAR is filed electronically through the BSA E-Filing System and is separate from your tax return, so your 1040 deadline does not affect it.

Is the FBAR the same as Form 8938?

No. They are separate filings with different rules. The FBAR (FinCEN Form 114) is filed with the Treasury’s FinCEN, while Form 8938 is a FATCA form filed with your tax return and has higher thresholds. Many taxpayers must file both. See our comparison for the details.

About the author

Alex Kugelman is the founder and managing attorney of Kugelman Law, with nearly two decades of federal tax controversy experience including U.S. Tax Court and U.S. District Court litigation. He is admitted in California and before the U.S. Supreme Court, the U.S. Tax Court, and the U.S. District Court for the Northern and Eastern Districts of California, and served as San Francisco Chair of the Federal Bar Association Tax Division in 2018. He is nationally recognized for cryptocurrency tax and has been quoted in the Financial Times and the New York Post on California tax enforcement. For matters that reach into IRS offshore examinations, his colleague Otto Bosch, a former IRS Revenue Agent from the Large Business & International division, leads the firm’s federal audit-defense work.

This article is attorney advertising and general information, not legal advice, and it describes rules that can change. Foreign-account reporting is fact-specific. Contacting Kugelman Law does not create an attorney-client relationship.

Winning means responding carefully, documenting where your life actually centers, and controlling the process from the first notice through any appeal. This guide walks through how to do that. If the FTB has questioned your residency, call (949) 835-0440 to speak with an attorney before you respond.

This article focuses on defense: what to do once an audit is underway. If you want the background on how the FTB decides residency in the first place, start with our explainer, California Residency Audit: How the FTB Decides If You Really Left, and our overview of enforcement trends in California Residency Audits and the Billionaire Tax.

What a residency audit is actually deciding

A residency audit turns on two ideas. The first is domicile, your one true permanent home, the place you intend to return to. The second is whether your presence in another state is genuine or merely temporary. California uses a closest-connection analysis, weighing where your home, family, work, finances, and social life are anchored. The full factor list is in our explainer above.

For the fight itself, what matters is that the burden is generally on you, the taxpayer, to prove you changed your domicile and became a nonresident. That burden shapes every move that follows.

First moves when you receive a residency audit notice

The early steps decide more cases than people realize. Do not ignore the notice, and do not answer casually. FTB residency audits often open with a questionnaire that looks routine but is designed to lock in admissions. Once you commit to an answer, walking it back is hard.

Before you respond, get counsel involved and preserve your records. Your early responses set the frame for the entire audit, and a privileged conversation with a tax attorney lets you plan the response strategically rather than reactively. This is also the moment to stop volunteering information. Answer what is asked, accurately and completely, without handing the FTB a wider net than it started with.

How to fight a California residency audit: building your case

Reconstruct your physical presence, on your terms

The FTB reconstructs where you were using cell phone records, credit card statements, toll and travel data, boarding passes, and hotel receipts. You should build the same timeline first, from your own records, so you are presenting the story rather than reacting to theirs. A clean, day-by-day account of where you actually were, supported by documents, is one of the most persuasive things you can put in front of an auditor.

Prove the change of domicile with substance

Residency is decided on substance, not paperwork. A new driver’s license and a mailing address do not win the case if your life still centers in California. The facts that move an audit are the substantive ones: where you sleep most nights, where your spouse and children live, where you work, where you see your doctors, and where you spend your time. Assemble evidence that your center of life genuinely shifted, and be honest about the facts that cut against you so you can address them directly.

Answer the closest-connection factors head-on

Rather than hoping the FTB overlooks a weak factor, meet each one. If you kept a California home, explain its actual use and show your primary residence elsewhere. If family remained in the state temporarily, document the timeline and the reason. Confronting the hard factors with context is far stronger than leaving gaps for the auditor to fill in against you.

Use the 546-day safe harbor if it fits

California provides a safe harbor for people who leave under an employment-related contract for an uninterrupted period of more than 546 days, roughly 18 months. It is narrow. It requires a qualifying employment arrangement, and it limits both your California return-visit days and your investment income during the period. Most people who simply relocate do not qualify, but for those who do, it can be decisive. An attorney can tell you quickly whether your facts fit.

Responding to FTB information document requests

Most of a residency audit happens through information document requests. Handle them with discipline. Produce what is genuinely responsive, keep your answers consistent across the whole file, and do not over-produce records that invite new questions. Watch for privileged material, and make sure every document you provide fits the same coherent narrative. Inconsistencies between a questionnaire, a bank record, and a calendar are exactly what auditors look for.

If the FTB issues a Notice of Proposed Assessment

If the audit ends unfavorably, the FTB issues a Notice of Proposed Assessment (NPA). This is not the end of the road, but the deadlines are strict and unforgiving. You generally have a limited window, commonly 60 days, to file a protest, and if the FTB later issues a Notice of Action, you have a further limited window to appeal to the California Office of Tax Appeals (OTA). Missing a deadline can forfeit your best arguments regardless of how strong they are, so calendar every date the moment a notice arrives and treat the protest and appeal as the main event, not an afterthought.

Statute of limitations: why filing returns matters

Timing can work for you or against you. When you file a California return as a nonresident or part-year resident, you generally start a four-year clock for the FTB to audit that year. If you never file a return for a year the FTB believes you were a resident, there may be no statute of limitations at all, which leaves you exposed indefinitely. Filing the correct returns is not only compliance, it is a defensive move that starts the clock running.

Common FTB findings, and how to rebut them

Certain facts show up in audit after audit: a home kept in California, children still in California schools, California doctors and dentists, club memberships, and cars registered in the state. None of these is automatically fatal. Each can be explained with context, a timeline, and corroborating records that show your center of life moved even if a few ties lingered. The goal is not a perfect record, which almost no one has. The goal is a credible, well-documented account that outweighs the connections the FTB is pointing to.

Why you want an attorney, not just a CPA

Residency audits are adversarial, and they frequently proceed to protest and to the Office of Tax Appeals. A tax attorney gives you attorney-client privilege for candid strategy conversations, experience presenting evidence in a contested posture, and the ability to carry the case through appeal. When the dollars are large, and in these audits they usually are, that difference matters.

How Kugelman Law fights California residency audits

We represent high-net-worth individuals and business owners in California residency audits and tax audits from the first FTB notice through protest and appeal, and we handle the complex tax matters that often travel alongside a residency dispute, including questions about California source income after you move and the planning steps in moving out of California without triggering an FTB audit. Our Los Angeles tax attorney page explains how we serve Southern California clients.

Our results reflect what disciplined advocacy achieves in high-stakes tax disputes. In one federal matter, two IRS Notices of Deficiency proposing more than $557,000 across six years were settled in U.S. Tax Court down to roughly $38,000, and with avoided interest and California exposure the client effectively saved over $1.2 million. Results depend on specific facts. Past results do not guarantee future outcomes.

Talk to a California residency audit attorney

If the FTB has opened a residency audit or you expect one, get ahead of it before you respond. Schedule a paid, privileged consultation with Kugelman Law by calling (949) 835-0440 or visiting our contact page.

Frequently asked questions

How long does a California residency audit take?

Residency audits commonly run many months and sometimes more than a year, especially when the FTB requests detailed records and issues follow-up questions. The timeline depends on the complexity of your facts and how the audit is managed. Handling requests promptly and consistently helps keep it from dragging.

Can I fight a residency audit myself?

You can, but it is risky when the dollars are significant. The burden is generally on you to prove nonresidency, early answers are hard to undo, and the matter can proceed to protest and appeal. A tax attorney provides privilege, strategy, and appeal experience that a self-represented taxpayer does not have.

I already answered the FTB’s questionnaire. Is it too late?

No. Prior answers matter and cannot be ignored, but a case is rarely lost on a questionnaire alone. Counsel can work within what you have already said, address problem answers directly, and build the documentary record that carries the most weight.

What is the deadline to challenge the FTB’s decision?

Deadlines are strict. You generally have a limited window to protest a Notice of Proposed Assessment, and a further limited window to appeal a Notice of Action to the Office of Tax Appeals. Calendar every date as soon as a notice arrives, and confirm the exact deadlines with your attorney, because missing one can forfeit strong arguments.

Do I need to have filed a California return to be protected?

Filing the correct nonresident or part-year return generally starts a four-year audit clock. If you never filed for a year the FTB believes you were a resident, there may be no statute of limitations, leaving you exposed indefinitely. Filing is both compliance and defense.

Can the FTB really pull my cell phone and credit card records?

Yes. The FTB can obtain records such as cell phone data, credit card statements, and travel documentation to reconstruct where you actually were. That is why building your own accurate timeline first is one of the most important steps in the defense.

About the author

Alex Kugelman is the founder and managing attorney of Kugelman Law, with nearly two decades of federal and California tax controversy experience, including U.S. Tax Court and U.S. District Court litigation. He is admitted in California and before the U.S. Supreme Court, the U.S. Tax Court, and the U.S. District Court for the Northern and Eastern Districts of California, and served as San Francisco Chair of the Federal Bar Association Tax Division in 2018. He has been quoted in the Financial Times and the New York Post on California’s billionaire tax and the state’s residency audits of departed wealthy residents. For clients who also face IRS examinations, his colleague Otto Bosch, a former IRS Revenue Agent from the Global High Wealth group, leads the firm’s federal audit-defense work.

This article is attorney advertising and general information, not legal advice. Every tax matter turns on its own facts, and procedural deadlines and rules can change. Contacting Kugelman Law does not create an attorney-client relationship.

What is the California billionaire tax?

How the California wealth tax would be calculated

Rate and threshold

What counts toward net worth

Valuing private business interests

Trusts

Paying the tax

Can you avoid the billionaire tax by leaving California?

What Prop 40 means if you are wealthy but not a billionaire

Constitutional and legal challenges ahead

How to protect yourself now

Talk to a California tax attorney about the billionaire tax

Frequently asked questions

Who has to pay the California billionaire tax?

Is the billionaire tax a one-time tax or an annual tax?

Can I avoid the tax by moving out of California?

Does the billionaire tax apply to cryptocurrency and private business interests?

When do Californians vote on Proposition 40?

What should I do if the FTB questions my residency?

About the author

A QSBS audit is the IRS’s examination of whether a Section 1202 exclusion was actually earned, and because these claims routinely shelter seven- and eight-figure gains, they draw serious attention. When an examiner disallows an exclusion, the result can be a large assessment of tax, interest, and penalties on income the taxpayer believed was tax-free.

This article explains how the IRS challenges Section 1202 claims, the specific requirements examiners target, the records that make a position defensible, and what happens if a case moves toward U.S. Tax Court. If you want the underlying rules first, start with our complete guide to QSBS and Section 1202.

Why QSBS claims attract IRS scrutiny

Two features make QSBS a natural audit target. The amounts are large, so the revenue at stake justifies the examiner’s time. And qualification turns on a chain of technical requirements, each of which must be satisfied and, just as importantly, substantiated.

The taxpayer bears the burden of proving entitlement to the exclusion. If the records are thin, the size of the benefit works against you, not for you.

The requirements examiners attack first

In a QSBS audit, the IRS does not have to disprove your whole position. It only needs one requirement to fail. These are the pressure points examiners return to most often.

1. Was it a qualified trade or business?

This is the most heavily contested QSBS issue. Section 1202 excludes businesses in fields such as health, law, accounting, consulting, financial services, and brokerage, along with any business whose principal asset is the reputation or skill of one or more employees.

Examiners probe whether a company that calls itself a technology or product company is, in substance, a services or consulting business. Companies in fintech, advisory, and platform businesses are especially exposed to this argument.

2. Did the company pass the gross-assets test at issuance?

The corporation’s aggregate gross assets could not exceed the statutory ceiling, $50 million for older stock and $75 million for stock acquired after July 4, 2025, at the moment the stock was issued. Examiners reconstruct the company’s balance sheet as of the issuance date, and they scrutinize how contributed property was valued, because contributed property is counted at fair market value.

A company that crossed the threshold before your shares were issued can knock out the exclusion.

3. Was the stock acquired at original issuance?

QSBS generally must be acquired directly from the corporation for money, property, or services. Examiners look for shares that were actually bought from another shareholder, or that came through a transaction that breaks the original-issuance requirement. Secondary purchases usually do not qualify.

4. Was the 80% active-business requirement met throughout?

At least 80% of the corporation’s assets, by value, had to be used in the active conduct of the qualified business during substantially all of the holding period. A company that accumulated large cash or investment balances relative to its operating assets can fail this test, and examiners test it across the full holding period, not just at a single snapshot.

5. Do redemptions taint the stock?

Section 1202’s anti-abuse rules can disqualify stock if the company redeemed shares around the time of issuance. Significant redemptions from any shareholder within a one-year window, and redemptions from the shareholder or related parties within a two-year window, can taint stock that otherwise looks clean. This trap frequently surprises companies that repurchased equity from a departing founder or employee.

6. Was the holding period and per-issuer cap respected?

Finally, examiners confirm the holding period and recompute the per-issuer limitation, the greater of the dollar cap or ten times basis. Errors in the holding-period start date or in the basis calculation can reduce or eliminate the exclusion the taxpayer claimed.

The documentation that wins a QSBS audit

QSBS cases are won or lost on records, and the best time to build them is years before any audit. A defensible file generally includes the following.

1. Proof the issuer was a C corporation at issuance and throughout the holding period.
2. A contemporaneous balance sheet establishing aggregate gross assets at and immediately after issuance, with support for the valuation of any contributed property.
3. Stock purchase or subscription documents showing acquisition at original issuance, the consideration paid, and the issuance date.
4. Evidence of the company’s active business and how at least 80% of assets were used in it, across the holding period.
5. Cap-table and corporate records showing any redemptions, so the anti-abuse windows can be analyzed.
6. A holding-period and basis workpaper supporting the exclusion amount and the per-issuer cap.

If you are planning a sale, assembling this file in advance is one of the highest-value things you can do. If you are already under examination, organized, credible records are what move an examiner off a disallowance.

From examination to U.S. Tax Court

A QSBS audit that cannot be resolved at the examination level does not end there. If the examiner proposes to disallow the exclusion, the taxpayer can typically pursue review with the IRS Independent Office of Appeals. If the matter still is not resolved, the IRS issues a Notice of Deficiency, and the taxpayer generally has 90 days to petition the U.S. Tax Court, where the deficiency can be contested before paying it.

How the position is documented and framed at the examination stage often shapes how strong it is if the case is later litigated, which is why experienced representation early matters.

A California footnote worth real money

Even a QSBS position that survives IRS audit does not shield the gain from California. California does not conform to Section 1202, so the state can tax the full gain regardless of the federal outcome, and departures timed around a sale can invite a Franchise Tax Board residency audit. We cover that interaction in our article on California and QSBS.

Frequently asked questions about QSBS audits

What triggers a QSBS audit?

There is no single trigger, but large exclusions, companies in fields close to the excluded services, and thin documentation all raise the odds. Because the taxpayer bears the burden of proof, the size of the benefit tends to invite scrutiny.

Which QSBS requirement does the IRS challenge most often?

The qualified-trade-or-business requirement is the most frequently contested, particularly the argument that a company is really a services, consulting, or reputation-based business that Section 1202 excludes.

Who has the burden of proof in a QSBS audit?

The taxpayer generally must prove entitlement to the exclusion. That is why contemporaneous records establishing each requirement are so important.

What happens if the IRS disallows my QSBS exclusion?

You can seek review with the IRS Office of Appeals, and if the IRS issues a Notice of Deficiency, you generally have 90 days to petition the U.S. Tax Court to contest the amount before paying it.

Can good documentation actually change the outcome?

Yes. Organized, credible records that establish each requirement are often the difference between a sustained exclusion and a costly disallowance.

Disclaimer. This article is for general information only and is not legal or tax advice. Reading it does not create an attorney-client relationship. Results depend on specific facts. Past results do not guarantee future outcomes. Consult a qualified attorney about your situation before acting.

Under Section 1202 of the Internal Revenue Code, a taxpayer who holds qualifying stock in a small C corporation can exclude a large portion, and in many cases all, of the capital gain when the stock is sold. On a successful exit, the difference can be millions of dollars kept rather than paid to the IRS.

The benefit is also one of the most misunderstood provisions in the tax code, and one the IRS examines closely. Qualifying for the QSBS exclusion depends on a series of technical tests, several of which are easy to fail without realizing it.

This guide explains how the Section 1202 exclusion works, what changed in 2025, and where taxpayers get into trouble. It is written from the perspective of a firm that handles the harder end of the problem: defending these positions when the IRS pushes back.

What is Qualified Small Business Stock?

Qualified Small Business Stock is stock in a domestic C corporation that meets the requirements of Section 1202. When the requirements are satisfied and the stock is held long enough, the shareholder can exclude eligible gain from federal income tax on a sale or exchange. The policy goal is to encourage investment in small, active businesses by rewarding people who put capital into them early and hold for the long term.

Three ideas sit at the center of the QSBS rules. First, the company has to be the right kind of company, small and actively operating a qualified business. Second, you have to acquire the stock the right way, at original issuance, in exchange for money, property, or services. Third, you have to hold it long enough. Miss any one of these and the exclusion can disappear entirely.

The five tests to qualify for the Section 1202 exclusion

1. It must be C corporation stock

The issuer must be a domestic C corporation, both when the stock is issued and, generally, throughout substantially all of the taxpayer’s holding period. Stock in an S corporation, a partnership, or an LLC taxed as a partnership does not qualify. This is why the choice of entity at formation is so important, and why some companies convert to C corporation status with QSBS in mind.

2. The company must be a “qualified small business”

At all times before and immediately after the stock is issued, the corporation’s aggregate gross assets must not exceed a statutory ceiling. For stock issued on or before July 4, 2025, that ceiling is $50 million. For stock acquired after July 4, 2025, the ceiling is $75 million. “Aggregate gross assets” generally means cash plus the adjusted basis of other property, with contributed property counted at fair market value. A company that has already grown past the ceiling can no longer issue QSBS, though stock issued earlier, while the company was under the limit, can remain qualified.

3. It must be acquired at original issuance

You generally must acquire the stock directly from the corporation, in exchange for money, other property (not including stock), or services. Buying shares from another shareholder on the secondary market usually does not produce QSBS in your hands. There are important exceptions for stock received by gift, at death, or from a partnership distribution, where holding periods and QSBS character can carry over.

4. The company must run an active qualified trade or business

During substantially all of the holding period, at least 80% of the value of the corporation’s assets must be used in the active conduct of one or more qualified trades or businesses.

Certain fields are specifically excluded, including services in health, law, engineering, architecture, accounting, actuarial science, performing arts, consulting, athletics, financial services, and brokerage, along with banking and other financial businesses, farming, mineral extraction, and the operation of hotels, motels, or restaurants. Any business whose principal asset is the reputation or skill of one or more employees is also excluded.

Whether a given company clears this test is one of the most frequently litigated QSBS questions, and a common focus of IRS audits.

5. You must meet the holding period

Historically, the stock had to be held for more than five years to claim any exclusion. The 2025 legislation introduced a tiered holding period for newly acquired stock, discussed below. The holding period generally starts the day after the stock is issued.

How much gain can you exclude?

The share of gain you can exclude depends on when you acquired the stock. Congress has increased the exclusion over time, so the acquisition date matters a great deal:

Any portion of the gain that is not excluded is generally taxed as capital gain at a maximum rate of 28%, rather than the usual 15% or 20% long-term rates. For stock eligible for the 50% or 75% exclusion, a portion of the excluded gain has historically been treated as an alternative minimum tax preference item; stock eligible for the full 100% exclusion generally is not. These interactions are technical, and worth confirming with counsel before you rely on a specific number.

The per-issuer cap

The exclusion is not unlimited. For each company whose stock you hold, the amount of gain you can exclude in a given year is capped at the greater of two figures: a dollar limit, or ten times your aggregate adjusted basis in the QSBS of that company that you sold during the year.

The dollar limit was $10 million for many years and was raised to $15 million for stock acquired after July 4, 2025, with inflation adjustments scheduled to begin after 2026. Because the cap is applied per issuer, sophisticated planning sometimes involves multiplying the cap across family members or trusts, a strategy that carries its own audit risk and is covered in a separate article in this series.

The 2025 changes to Section 1202

The One Big Beautiful Bill Act, enacted in 2025, expanded the QSBS benefit for stock acquired after July 4, 2025 in three main ways. It introduced the tiered holding period so that shareholders no longer have to wait a full five years for any benefit; it raised the per-issuer dollar cap from $10 million to $15 million; and it raised the aggregate gross assets ceiling from $50 million to $75 million, letting somewhat larger companies still issue QSBS. Stock acquired on or before July 4, 2025 keeps the older rules.

We cover the details, and the old-stock-versus-new-stock question, in our dedicated article on the 2025 QSBS changes.

Deferring gain with a Section 1045 rollover

What if you need to sell before your holding period is complete? Section 1045 offers a partial answer. If you have held QSBS for more than six months and sell it, you can generally defer the gain by reinvesting the proceeds into new QSBS within 60 days, carrying your holding period forward. A rollover does not make the gain disappear, but it can preserve the path to a future exclusion. The mechanics are strict, and missing the reinvestment window forfeits the benefit.

Common traps that destroy QSBS status

Redemptions

Section 1202 contains anti-abuse rules that can disqualify stock if the company buys back its own shares around the time of issuance. In general terms, “significant” redemptions from any shareholder within a one-year window before or after issuance, measured against roughly 5% of the company’s value, can taint newly issued stock, and redemptions from the shareholder or related parties within a two-year window can do the same.

These rules catch well-meaning companies that repurchase shares from departing founders or employees without realizing the effect on everyone else’s QSBS.

Entity missteps

Because only C corporation stock qualifies, businesses formed as LLCs or S corporations often have no QSBS unless and until they convert, and the holding period generally starts fresh at conversion. The gross assets ceiling is tested at issuance, so a company that waits too long to issue equity may lose the chance.

California does not follow the federal rule

This is a critical point for our clients. California does not conform to Section 1202. A California resident can exclude 100% of a gain for federal purposes and still owe full California tax on the same gain. For founders considering a move before a liquidity event, the interaction with California residency rules is significant, and it is a frequent trigger for Franchise Tax Board scrutiny. We address this in detail in our article on California and QSBS.

What happens if the IRS challenges your QSBS?

A QSBS exclusion is claimed on your return, but claiming it is not the end of the story. The IRS can examine whether the company was truly a qualified small business, whether the active-business and qualified-trade tests were met, whether the stock was acquired at original issuance, and whether the holding period and dollar caps were respected. Because the dollars at stake are usually large, these examinations are thorough, and a disallowed exclusion can turn into a substantial assessment of tax, interest, and penalties.

This is where careful documentation and experienced representation matter, and we cover it in depth in our guide to how QSBS claims are audited and defended. If you are facing questions about a Section 1202 position, our team handles IRS tax audits, and where a matter cannot be resolved at exam or appeals, U.S. Tax Court litigation. We also assist with related tax problems and, for crypto and blockchain companies, cryptocurrency accounting and audits.

Frequently asked questions about QSBS

Disclaimer. This article is for general information only and is not legal or tax advice. Reading it does not create an attorney-client relationship. Tax results depend on your specific facts. Past results do not guarantee future outcomes. Consult a qualified attorney about your situation before acting.

As Proposition 40, the 2026 Billionaire Tax Act, heads toward a statewide vote, the California Franchise Tax Board (FTB) is preparing to scrutinize whether departing residents have truly cut ties with California or merely rearranged them on paper. If you have a substantial net worth and a California history, the question is no longer whether you moved — it is whether you can prove it.

Kugelman Law founder and managing attorney Alex Kugelman was quoted on exactly this issue in the Financial Times, in reporting that was subsequently picked up by the New York Post. His assessment of what is coming is blunt, and it is worth understanding before an audit notice ever arrives.

What the California Billionaire Tax (Proposition 40) Actually Proposes

As proposed, the 2026 California Billionaire Tax Act would impose a one-time 5% tax on the global net worth of individuals with wealth exceeding $1 billion, keyed to California residency as of January 1, 2026. The measure is headed to a statewide vote in November 2026, and its drafters of tax law academics advising the initiative have projected it could raise tens of billions of dollars earmarked largely for healthcare and education.

The detail that matters most for planning is the residency date. Because the tax is tied to residency as of the start of 2026, simply relocating afterward does not necessarily remove someone from its reach. That is precisely why the conversation has shifted from the tax itself to how California will decide who was, and who still is, a resident. (Proposition 40’s terms are as proposed and remain subject to voter approval and possible legal challenge. Anyone affected should get advice on their specific facts.)

Why Leaving California Doesn’t End the Tax Question

California is one of the most aggressive states in the country when it comes to residency, alongside New York. Leaving is not a one-time event the state simply accepts. When the financial stakes are high, the FTB opens a California residency audit to test whether a former resident genuinely abandoned California or kept a foot in the door.

Recent coverage has focused on three high-profile names said to be likely targets — Google co-founder Sergey Brin, venture capitalist and White House adviser David Sacks, and Uber co-founder Travis Kalanick — but the enforcement playbook that applies to them is the same one the FTB uses against far less famous taxpayers every year. The billionaire tax simply raises the dollar figures and the intensity.

How the FTB Decides Whether You Really Left

A California residency audit goes well beyond counting the days you spent in the state. According to the FTB’s own guidance, examiners look at whether a person “substantially severed” their California connections on departure — or whether they “maintained” California connections “in readiness for a return.” In practice, that means the FTB examines factors such as:

• Where your children are enrolled in school
• Where your vehicles are registered
• Where your doctors, dentists, and even veterinarians are located
• Where your bank accounts and financial relationships are maintained
• The location and relative value of your homes, and where you spend your time
• Where your professional, social, and family ties remain

The takeaway is that surface-level moves do not carry the day. As one law professor advising the initiative put it in the Financial Times, “Sending your assistant to get a driving license in Nevada, spending Christmas at your home in Miami and writing a mean tweet about California are only moves on paper.” Residency turns on the substance of your life, not the paperwork you generate around a move.

“These Fights Will Go All the Way” — Alex Kugelman in the Financial Times

Speaking to the Financial Times about how California is likely to pursue collection if the tax passes, Kugelman Law’s Alex Kugelman was direct:

“If the tax goes through, the [Franchise Tax Board] will not be afraid to try to collect it. And obviously people of that means will have the top tax litigators. These fights will go all the way.”

— Alex Kugelman, quoted in the Financial Times (and reported by the New York Post)

That is the reality high-net-worth Californians should plan around. The FTB is expected to treat these matters as worth pursuing, and taxpayers with the means to fight will do so — through the audit, through administrative appeals, and, where necessary, into court. Preparing for that reality is very different from hoping an audit never comes.

What This Means If You’ve Moved — or Are Considering It

Whether you are a billionaire named in the headlines or a business owner, executive, or tech professional with a nine-figure or eight-figure net worth, the same principles apply. A defensible change of residency is built well before an audit begins, through a consistent, documented pattern showing that your life actually moved. The worst position to be in is discovering after a notice arrives that your day counts, filings, property use, and family ties tell an inconsistent story.

If the billionaire tax passes in November, expect residency scrutiny to intensify across the wealth spectrum, not just at the very top. And even if it does not pass, California’s existing residency rules and the FTB’s appetite for high-value tax audits are not going away.

How Kugelman Law Helps With California Residency Audits

Kugelman Law is a boutique tax controversy firm serving clients throughout California and nationwide from offices in San Rafael, San Francisco, and Irvine. We represent individuals and businesses facing high-stakes California residency audits and related matters, including:

• Tax audit defense, including FTB residency examinations
• Tax collection matters when the state moves to collect a disputed liability
• Tax litigation when a dispute cannot be resolved administratively
• General tax help for individuals and businesses navigating complex state and federal exposure

We do not offer free consultations. We offer paid, privileged consultations with Alex Kugelman that are fully protected by attorney-client privilege; the appropriate setting for discussing something as sensitive as your residency position and net worth.

Notable Results

Our tax controversy work has included reducing a $365,000 tax debt to a zero-dollar liability, resolving a multi-year audit and non-filing matter with a minimal payment, and successfully resolving ten years of unfiled returns. Results depend on specific facts. Past results do not guarantee future outcomes.

Frequently Asked Questions

What is a California residency audit?

A California residency audit is an examination by the Franchise Tax Board to determine whether you were a California resident for a given tax year and therefore taxable in California. It typically arises when a high-income or high-net-worth taxpayer claims to have left the state, and the FTB tests whether the departure was genuine and complete.

Can California tax me after I move away?

Potentially, yes. If the FTB concludes you remained a California resident or did not sufficiently sever your ties, it can assert that California income and, under the proposed billionaire tax, California-linked wealth remain within its reach. This is why the timing and substance of a move matter so much.

What factors does the FTB look at to decide residency?

The FTB weighs the totality of your connections: where you spend your time, where your home and family are, where your children attend school, where your vehicles are registered, where your doctors and financial accounts are, and where your professional and social life is centered. No single factor controls; the FTB looks at the overall pattern.

Is the California billionaire tax already law?

No. As of this writing, the 2026 Billionaire Tax Act (Proposition 40) is a proposed measure headed to a statewide vote in November 2026. Its terms are subject to voter approval and potential legal challenge. Even so, the residency-audit issues it highlights already exist under current California law.

Should I get advice before I move?

Ideally, yes. A defensible residency change is much easier to establish when it is planned and documented in advance than when it is reconstructed after an audit notice. If you have already moved, it is still worth reviewing your position before a dispute arises.

About the Author

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique tax controversy and cryptocurrency tax firm serving clients throughout California and nationwide. Admitted to the California Bar in 2008 (No. 255463) and before the U.S. Supreme Court, he has nearly two decades of federal tax controversy experience, including litigation in the U.S. Tax Court and U.S. District Court. He served as San Francisco Chair of the Federal Bar Association Tax Division in 2018 and is a member of the Marin County Assessment Appeals Board. Alex is nationally recognized for his work on cryptocurrency tax matters and has been quoted in outlets including the Financial Times and the New York Post. He earned his J.D. from Chapman University Fowler School of Law.

Talk to a California Tax Attorney About Your Residency Position

If you have left California, are planning to, or have received notice of a residency audit, the time to build your position is now — not after the FTB opens a file. Schedule a paid, privileged consultation with Alex Kugelman to discuss your specific facts under the protection of attorney-client privilege.

Call (415) 968-1780 or contact Kugelman Law to schedule your consultation.

This article is provided for general informational purposes only and is not legal or tax advice. Results depend on specific facts. Past results do not guarantee future outcomes. Reading this article does not create an attorney-client relationship.

This article walks through what changed, why legitimate credits are getting swept up, and what it means for anyone holding one of these letters.

For the full mechanics of the notice itself, see our companion guide to IRS Letter 3176C: what it means and how to respond. This piece focuses on the “why” behind the surge.

What the Frivolous Return Program Was Designed to Do

The IRS Frivolous Return Program historically targeted a narrow, well-defined group of filings: returns advancing legal arguments the courts have rejected for decades. Claims that wages are not income, that filing is voluntary, or that a person owes no federal income tax are the classic examples. The agency publishes a list of these positions, and returns relying on them are properly treated as frivolous and subject to the $5,000 penalty under IRC § 6702 ($10,000 for a joint return).

For most of the program’s history, an ordinary taxpayer claiming a credit had virtually no chance of drawing this notice. That is what has changed.

What Changed: A Wave of Credit-Based Refund Schemes

In May 2024, the IRS issued a consumer alert (IR-2024-139) and an accompanying fact sheet warning that thousands of returns contained false refund claims fueled by misleading social-media advice. The bad advice clustered around a few specific credits:

• The Fuel Tax Credit (Form 4136) — claimed by filers reporting large fuel amounts inconsistent with their actual occupation. This credit is meant for limited off-highway and business uses, not everyday drivers.
• The Sick and Family Leave Credit (Form 7202) — a pandemic-era credit available only to eligible self-employed taxpayers for the 2020 and 2021 tax years, improperly claimed on later returns where it does not apply.
• Household employment taxes (Schedule H) — where filers invented fictitious household employees and wages to manufacture a refund.

These schemes spread quickly online, and the volume of improper claims was large enough that the IRS treated it as a significant enforcement priority, warning that participants could face penalties and, in some cases, be victims of scams.

How the IRS Responded — and Why Legitimate Claims Get Caught

To stem the tide, the IRS expanded its automated Frivolous Return Program screening, began freezing refunds tied to the flagged credits, and mailed Letter 3176C in far greater volume than before. The scale of the response is the root of the problem for honest filers.

Automation over individual review

These notices are largely generated by an automated screen rather than reviewed individually by an assigned agent. That approach lets the IRS process an enormous number of returns quickly, but an automated filter matches patterns; it does not weigh the specific facts that distinguish a genuine claim from a fabricated one. When a return contains one of the targeted credits, the pattern matches and the letter can issue regardless of whether the claim was proper.

The filters key on the credit, not its legitimacy

Because the screen is looking for the presence of the abused credits, taxpayers who claimed those same credits correctly land in the same net. Consider a farmer or off-highway business operator with a valid Fuel Tax Credit, or a self-employed taxpayer who properly claimed the Sick and Family Leave Credit for an eligible 2020 or 2021 period. Their legitimate claims share the surface features the filter is hunting for. The result is a wave of false positives and notices sent to people whose returns were never frivolous in any ordinary sense of the word.

In effect, the population receiving these letters has expanded from a narrow band of tax-protester filings to a much broader group of ordinary taxpayers who happened to claim a scrutinized credit.

That is the trend Kugelman Law is seeing directly as more taxpayers reach out about notices that do not match the returns they actually filed. We cover what to do when a legitimate return gets flagged in got a frivolous return notice but your return wasn’t frivolous.

Why This Matters Even If Your Claim Was Correct

A frivolous return notice is not an audit and not, by itself, a penalty assessment — but it carries real consequences. The § 6702 penalty can attach if you do not respond adequately within the timeframe stated in the letter, and any refund tied to the flagged credit is typically frozen until the matter is resolved. The letter generally gives 30 days from the date printed on it, and that date controls, so the window is short.

The vagueness compounds the difficulty. Because the notice often does not spell out precisely what was flagged, a recipient must first reverse-engineer which credit or entry drew the screen’s attention before deciding how to respond. Guessing wrong — or amending away a credit you were genuinely owed — can be as costly as ignoring the letter.

What to Do If You Received One of These Notices

The right response turns on a single question: was the flagged credit claimed correctly? Answering it requires identifying what was flagged, reviewing the return against the rules governing that credit, and confirming whether the position was prepared properly. If it was, the path is to substantiate and defend it with documentation. If a genuine error exists, the path is a corrected return (Form 1040-X) filed within the window. Because the stakes and the deadline are unforgiving, this is not the moment for guesswork, and it is handled differently from a standard IRS audit.

What This Enforcement Shift Signals Going Forward

The move toward high-volume, automated frivolous-return screening reflects a broader direction in IRS enforcement: using pattern-matching systems to police refundable credits at scale. That approach is efficient for the agency and effective against organized schemes, but it shifts a real burden onto honest taxpayers, who must now be prepared to prove the legitimacy of credits that were once rarely questioned.

For anyone claiming a credit the IRS has identified as high-risk — the Fuel Tax Credit and the self-employed Sick and Family Leave Credit chief among them — the practical takeaway is to claim only what the law allows and to keep contemporaneous records that substantiate the claim from the outset.

It also means a frivolous return notice should not be read as an accusation of fraud. In the current environment it is often simply the output of a filter that flagged a return sharing surface features with abusive ones. Understanding that distinction is important: it keeps the response measured and evidence-focused rather than defensive, and it underscores why documentation — not argument — is what resolves these matters.

As automated screening continues, taxpayers and their advisors should expect credit-driven notices to remain a feature of the filing landscape rather than a temporary anomaly.

How Kugelman Law Helps

Kugelman Law works through a frivolous return notice methodically: reviewing the notice to interpret what the IRS is actually asserting, analyzing the return to determine what was likely flagged and whether it was prepared correctly, and then defending a correct position with appropriate documentation — or amending the return if a position was genuinely taken incorrectly — before the 30-day window closes.

The firm’s representation reflects nearly two decades of federal tax controversy experience, including litigation before the U.S. Tax Court, and is reinforced by insider IRS perspective — attorney Otto Bosch is a former IRS Revenue Agent who understands how the agency screens and processes these filings from the inside. Every engagement begins with a paid, privileged consultation with attorney Alex Kugelman, fully protected by attorney-client privilege; a protection that CPA-based services generally cannot offer.

In one representative matter, the firm reduced a client’s $365,000 tax debt to a zero-dollar liability. Results depend on specific facts. Past results do not guarantee future outcomes. If a credit you claimed triggered a frivolous return notice, learn more about the firm’s tax help services or contact us before the deadline runs.

Frequently Asked Questions

Why did the IRS start sending frivolous notices for tax credits?

After identifying thousands of false refund claims tied to certain credits driven by misleading social-media advice, the IRS expanded automated screening and began mailing Letter 3176C in far greater volume. The filters flag the presence of the abused credits, which sweeps in legitimate claims too.

Which credits are most often flagged?

The IRS has publicly identified the Fuel Tax Credit (Form 4136), the Sick and Family Leave Credit (Form 7202), and fabricated household employment taxes (Schedule H) as focal points of the recent enforcement push.

Can a legitimate credit really trigger a frivolous notice?

Yes. Because the automated screen keys on the presence of a scrutinized credit rather than its legitimacy, taxpayers who claimed the credit correctly can receive the notice as false positives and must then substantiate the claim.

Is the Sick and Family Leave Credit still available?

The self-employed Sick and Family Leave Credit was available for eligible taxpayers for the 2020 and 2021 tax years and cannot be claimed on later returns. Claiming it on a year where it does not apply is a common trigger for these notices.

What should I do if a credit I claimed was flagged?

Determine what was flagged, confirm whether the credit was claimed correctly, and respond within the deadline — substantiating a correct position with documentation, or filing a corrected return only if the position was actually improper. Given the short window and flat penalty, experienced representation is worthwhile.

About the Author

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique firm focused on federal tax controversy and cryptocurrency tax matters. Admitted to the California Bar (No. 255463) and the U.S. Supreme Court, he has nearly two decades of federal tax controversy experience, including litigation in the U.S. Tax Court and U.S. District Court.

He is a member of the American Bar Association and the Federal Bar Association, served as San Francisco Chair of the FBA Tax Division in 2018, and sits on the Marin County Assessment Appeals Board. Learn more on his attorney bio page.

Contributor: Otto Bosch is an attorney with Kugelman Law and a former IRS Revenue Agent from the Global High Wealth Group (LB&I Division), bringing insider perspective on how the IRS screens and processes returns.

Speak With a Tax Controversy Attorney

If a tax credit you claimed triggered an IRS frivolous return notice, the response window is short and the penalty is steep. Kugelman Law offers paid, privileged consultations with attorney Alex Kugelman — fully protected by attorney-client privilege — to review your notice and defend your position. Call (415) 968-1780 or contact us to schedule your consultation.

This article explains why legitimate taxpayers are receiving frivolous return notices, what the letter actually puts at risk, and how to respond in a way that defends a correct return rather than surrendering it. For the full background on the notice itself, see our guide to IRS Letter 3176C: what it means and how to respond.

What a Frivolous Return Notice Is Supposed to Flag

The IRS Frivolous Return Program was built to catch returns advancing arguments the courts have rejected for decades: claims that wages are not taxable income, that paying tax is voluntary, or that a taxpayer owes no federal income tax at all. The agency maintains a published list of these positions, and a return that relies on one of them is properly treated as frivolous.

The penalty behind the program is significant. Under IRC § 6702, the IRS can assess a $5,000 penalty per return (or $10,000 for a jointly filed return) and Letter 3176C is the warning that gives you a short window to correct or withdraw the flagged position before that penalty is assessed. The design assumes the recipient actually took a frivolous position. The problem is what happens when they did not.

Why Legitimate Returns Are Now Getting Flagged

Two features of how these notices are generated explain the surge of false positives.

The notices are automated, not individually reviewed

Letter 3176C is largely produced by an automated screening process rather than reviewed line-by-line by an assigned revenue agent. That is why the letter reads as impersonal and boilerplate, and why it is often vague about exactly what triggered it. An automated screen applies pattern-matching at scale; it does not weigh the specific facts of your return the way a human examiner would. When the pattern matches, the letter goes out — correct return or not.

The IRS widened the net to chase credit-based schemes

In May 2024, the IRS warned (in consumer alert IR-2024-139 and an accompanying fact sheet) that thousands of returns contained false refund claims driven by misleading social-media advice, concentrated in a handful of credits — notably the Fuel Tax Credit, the Sick and Family Leave Credit, and fabricated household employment taxes. To fight back, the agency expanded its automated frivolous-return screening and began freezing refunds and mailing 3176C letters in far greater numbers.

Because those filters key on the presence of the credits being abused, taxpayers who claimed the same credits legitimately are caught in the same net. A farmer with a valid off-highway Fuel Tax Credit, or any filer who claimed a scrutinized credit correctly, can now receive a notice originally aimed at tax-protester filings.

The letter does not distinguish a defensible claim from an abusive one before it is sent, thus proving that difference falls to you. We cover the credit-driven side of this trend in detail in why the IRS is sending frivolous return notices for legitimate credits.

What This Notice Actually Puts at Risk

A frivolous return notice is not an audit and it is not, by itself, a penalty assessment. It is a warning. But it carries two concrete risks. First, the $5,000 (or $10,000) penalty under § 6702 can attach if you do not respond adequately within the timeframe stated in the letter. Second, a refund tied to the flagged item is typically frozen while the matter is unresolved, so a legitimate refund can be held up until you substantiate the position.

Both risks are time-sensitive. The letter generally gives you 30 days from the date printed on it — the date on the letter controls, not the day you opened it — and mail delays eat into that window fast.

How to Respond When Your Return Was Correct

When the flagged position was legitimate, the goal is not to withdraw it — it is to defend it. In practice that means:

1. Identify what was flagged. Because the notice is vague, the first task is determining which credit, form, or line item drew the screen’s attention.
2. Confirm the position was prepared correctly. Review the return against the governing rules to verify the claim was proper — and to catch any genuine error before the IRS does.
3. Assemble substantiation. Gather the documentation that supports the item under review so the response demonstrates the claim is legitimate.
4. Respond in the form the letter requires — documentation supporting a correct position, or a corrected return (Form 1040-X) only if the position was in fact improper — within the deadline, requesting an extension from the IRS if you cannot meet it.

The wrong move here is costly in both directions. Amending a return to remove a credit you were entitled to means giving up money you were owed; defending an improper position wastes the response window and invites the penalty.

A poorly framed reply can even concede a point you meant to defend. That is why a careful review before you send anything matters so much.

What Not to Do

Do not ignore the letter in the belief that an obviously legitimate return will sort itself out — the penalty can attach for failure to respond. Do not fire off an angry or unsupported reply, which the automated program is not built to weigh. And do not assume that because a credit appears on the IRS’s scrutiny list your particular claim was improper; many recipients took a defensible, correct position and simply need to prove it.

Handling a 3176C notice is materially different from responding to a standard IRS audit, and treating it like routine correspondence is how avoidable penalties happen.

Documentation That Helps Substantiate a Legitimate Claim

When the goal is to defend a correct position, the strength of the response usually comes down to documentation. The specific records depend on what was flagged, but the principle is consistent: show the IRS the objective facts that support the claim rather than merely asserting it was proper.

For a Fuel Tax Credit, that can mean fuel purchase records and evidence of qualifying off-highway or business use tied to the amounts reported. For a credit with eligibility limited to particular tax years, it means demonstrating that the claim fell within the period the law allows. For income, withholding, or wage-based items, it means the underlying statements and payer records that reconcile to the figures on the return.

Equally important is the framing of the reply itself. The response should address the position the IRS is actually asserting, which the vague notice may not spell out, and should avoid inadvertently conceding a point or introducing new issues.

Because the automated program is not built to weigh nuance, a clear, organized, well-substantiated submission that maps directly to the flagged item gives a legitimate claim its best chance of being accepted and the frozen refund released.

How Kugelman Law Helps

Kugelman Law approaches a frivolous return notice methodically: reviewing the notice to interpret what the IRS is actually asserting, analyzing the return to determine what was likely flagged and whether it was prepared correctly, and then defending a correct position with appropriate documentation — or amending the return if a position was genuinely taken incorrectly — before the 30-day window closes.

The firm’s representation draws on nearly two decades of federal tax controversy experience, including litigation before the U.S. Tax Court, and is strengthened by insider IRS perspective — attorney Otto Bosch is a former IRS Revenue Agent who understands how the agency screens and processes these filings. Every engagement begins with a paid, privileged consultation with attorney Alex Kugelman, fully protected by attorney-client privilege; a protection CPA-based services generally cannot offer.

In one representative matter, the firm reduced a client’s $365,000 tax debt to a zero-dollar liability. Results depend on specific facts. Past results do not guarantee future outcomes. If a frivolous return notice arrived for a return you believe was correct, learn more about the firm’s tax help services or contact us before the deadline approaches.

Frequently Asked Questions

Can I get a frivolous return notice even if my return was legitimate?

Yes. The notices are generated by an automated screen that flags the presence of certain credits and positions. Taxpayers who claimed those credits legitimately can be caught as false positives and must then substantiate the claim.

Does a frivolous return notice mean I did something wrong?

Not necessarily. It means the IRS’s automated system flagged a position it treats as potentially frivolous. Many recipients took correct, defensible positions and need to document them rather than withdraw them.

Should I amend my return to make the notice go away?

Only if the flagged position was actually improper. If your return was correct, amending could mean surrendering a refund you were entitled to. The right response depends on reviewing what was flagged and confirming the return was prepared properly.

How long do I have to respond?

Generally 30 days from the date printed on the letter. That date controls, not the day you received it, so act promptly and request an extension from the IRS if you need more time.

What happens if I ignore the notice?

The IRS can assess a $5,000 penalty per return ($10,000 if jointly filed) under IRC 6702 for failure to respond adequately, and a related refund may remain frozen. Ignoring the letter is how an avoidable penalty attaches to an otherwise legitimate return.

About the Author

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique firm focused on federal tax controversy and cryptocurrency tax matters. Admitted to the California Bar (No. 255463) and the U.S. Supreme Court, he has nearly two decades of federal tax controversy experience, including litigation in the U.S. Tax Court and U.S. District Court.

He is a member of the American Bar Association and the Federal Bar Association, served as San Francisco Chair of the FBA Tax Division in 2018, and sits on the Marin County Assessment Appeals Board. Learn more on his attorney bio page.

Contributor: Otto Bosch is an attorney with Kugelman Law and a former IRS Revenue Agent from the Global High Wealth Group (LB&I Division), bringing insider perspective on how the IRS screens and processes returns.

Speak With a Tax Controversy Attorney

If a frivolous return notice arrived for a return you believe was correct, the response window is short and the penalty is steep. Kugelman Law offers paid, privileged consultations with attorney Alex Kugelman — fully protected by attorney-client privilege — to review your notice and defend your position. Call (415) 968-1780 or contact us to schedule your consultation.

This guide explains what IRS Letter 3176C is, why a growing number of taxpayers are receiving one for positions that do not appear frivolous at all, and the steps to protect yourself before the deadline runs.

Kugelman Law is a boutique firm focused on federal tax controversy and cryptocurrency tax matters, representing individuals and businesses in California and nationwide. If a 3176C letter has landed in your mailbox, understanding it quickly matters because the response window is short and the stakes are real.

What Is IRS Letter 3176C?

Letter 3176C is a notice issued through the IRS Frivolous Return Program. It informs a taxpayer that the IRS has identified a return, claim, or other submission as taking a position the agency considers frivolous under the Internal Revenue Code. The letter is a warning rather than a final penalty assessment: it gives you an opportunity to correct or withdraw the flagged position before the IRS assesses a penalty under IRC § 6702.

A key characteristic of these notices is that they are largely generated by an automated screening process rather than reviewed one-by-one by an assigned revenue agent. That is why the tone reads as impersonal and boilerplate, and why the letter is often vague about exactly what on the return triggered it. The taxpayer is frequently left to reverse-engineer which line item, credit, or form drew the flag.

Why Does the IRS Call a Return “Frivolous”?

Historically, the Frivolous Return Program targeted genuinely baseless filings, the kind associated with long-discredited tax-protester arguments. Classic examples include claiming that wages are not income, that filing is “voluntary,” or that an individual owes no federal income tax at all. The IRS maintains a published list of positions it treats as frivolous, and returns advancing those theories have long drawn 3176C notices.

The important shift is what is happening now: the same notice is increasingly being sent to taxpayers whose returns take positions that are not remotely in that tax-protester category — often a credit that was claimed. Taxpayers who would never previously have received a frivolous return notice are now receiving one, and understanding why requires looking at how the IRS has changed its enforcement approach.

Why More Taxpayers Are Receiving Letter 3176C in 2026

In May 2024, the IRS issued a consumer alert (IR-2024-139) and an accompanying fact sheet warning that thousands of returns contained false refund claims driven by misleading social-media advice. The agency identified three areas where bad advice was fueling improper claims:

• The Fuel Tax Credit (Form 4136), claimed by filers who reported large amounts of fuel inconsistent with their occupation.
• The Sick and Family Leave Credit (Form 7202), which was available only to certain self-employed taxpayers for the 2020 and 2021 tax years and cannot be claimed on later returns.
• Household employment taxes (Schedule H), where filers invented fictitious household employees and wages to generate a refund.

To combat the wave, the IRS expanded its automated Frivolous Return Program screening and began freezing refunds and mailing Letter 3176C in far greater volume. The unintended consequence is straightforward: because the automated filters key on the presence of these credits and forms, legitimate taxpayers who genuinely qualify are getting swept up as false positives. A farmer with a valid off-highway fuel tax credit, or a taxpayer who claimed a credit correctly, can now receive the same frivolous return notice originally designed for tax-protester filings.

In short, the population receiving these letters has widened dramatically. The automated screen casts a broad net, and ordinary filers are landing in it. That is the trend Kugelman Law is seeing firsthand as more taxpayers reach out about notices that do not match the returns they actually filed.

What Positions Commonly Trigger a 3176C Notice?

Because the notices are vague, identifying the trigger is the first task in any response. In the current enforcement environment, common triggers include:

• Refundable or specialty credits the IRS is scrutinizing, including the Fuel Tax Credit and the Sick and Family Leave Credit.
• Schedule H household employment entries that the screen reads as fabricated.
• Overstated federal income tax withholding not supported by wage documents.
• Traditional tax-protester positions from the IRS list of frivolous arguments.

Critically, the fact that a credit appears on this list does not mean your claim was improper. Many taxpayers who receive a 3176C notice took a defensible — and correct — position. The challenge is that the automated system does not distinguish a legitimate claim from an abusive one before the letter goes out. Proving the difference falls to you.

Is Letter 3176C an Audit?

No. A 3176C notice is not a formal examination or audit, and it is not itself a penalty assessment. It is a warning that the IRS intends to treat your position as frivolous and will impose a penalty unless you respond appropriately. That distinction matters, because the correct response to a 3176C letter is different from how you would handle a standard IRS audit. Treating it like ordinary correspondence — or ignoring it — is how taxpayers walk into an avoidable penalty.

The $5,000 Frivolous Return Penalty Under IRC § 6702

The stakes behind Letter 3176C come from Internal Revenue Code § 6702, which authorizes a $5,000 penalty per return for a frivolous filing ($10,000 for a jointly filed return). If the IRS does not receive an adequate response within the timeframe stated in the letter, it may assess that penalty.

Unlike many tax penalties tied to the amount of tax owed, the § 6702 penalty is a flat amount that can apply even when little or no additional tax is at issue, which makes an incorrect or missed response disproportionately costly.

The letter typically gives you 30 days from the date printed on it to act. That window moves quickly, particularly given mail delays, and the date on the letter — not the date you opened it — controls.

How to Respond to Letter 3176C in 30 Days

The letter generally directs you to take one of the following actions within the response window:

1. File a corrected return (Form 1040-X) that removes the position the IRS flagged, if the position was in fact improper.
2. Submit a signed statement withdrawing the frivolous position.
3. Provide documentation supporting the item under review, if your position was legitimate and you can substantiate it.
4. Request an extension of the deadline by contacting the IRS if you cannot respond in time.

Which path is correct depends entirely on whether the flagged position was actually proper. Amending a return to remove a credit you were genuinely entitled to means giving up money you were owed; conversely, defending an improper position wastes the response window and invites the penalty.

Choosing the right response requires first determining what was flagged and whether the return was prepared correctly — which is precisely where experienced representation earns its keep.

What to Do If Your Return Was Not Frivolous

For the growing group of taxpayers whose returns were legitimate, the goal is not to withdraw the position — it is to defend it. That means identifying the flagged item, assembling the documentation that substantiates it, and responding in a way that satisfies the IRS while preserving your refund and your record.

Because the notice is vague and the deadline is short, a careful review of the return against the IRS position is essential before you send anything. A poorly framed response can inadvertently concede a point or trigger the very penalty you are trying to avoid.

How Kugelman Law Helps With a Frivolous Return Notice

Kugelman Law approaches a 3176C notice methodically. Our work typically includes:

• Reviewing the notice to interpret what the IRS is actually asserting, even when the letter is vague.
• Analyzing the return to determine what was likely flagged and whether the position was prepared correctly.
• Defending a correct position against the IRS with appropriate documentation — or amending the return if a position was, in fact, taken incorrectly — before the 30-day window closes.

The firm’s representation is grounded in nearly two decades of federal tax controversy experience, including matters before the U.S. Tax Court, and is strengthened by insider IRS perspective — attorney Otto Bosch is a former IRS Revenue Agent who understands how the agency screens and processes these filings from the inside. Every engagement begins with a paid, privileged consultation with attorney Alex Kugelman, fully protected by attorney-client privilege; a protection that CPA-based services generally cannot offer.

In one representative matter, the firm reduced a client’s $365,000 tax debt to a zero-dollar liability. Results depend on specific facts. Past results do not guarantee future outcomes.

If you have received a frivolous return notice, do not wait for the deadline to approach. Learn more about the firm’s tax help services or contact us to schedule a consultation.

Frequently Asked Questions

What is IRS Letter 3176C?

Letter 3176C is a notice from the IRS Frivolous Return Program advising a taxpayer that the IRS considers a position on their return frivolous. It is a warning that a $5,000 penalty under IRC § 6702 may be assessed if the taxpayer does not respond appropriately within the stated timeframe.

How long do I have to respond to Letter 3176C?

The letter generally provides 30 days from the date printed on it. The date on the letter controls, not the date you received it, so it is important to act promptly and, if needed, request an extension from the IRS.

How much is the frivolous return penalty?

Under IRC § 6702, the penalty is $5,000 per return, or $10,000 for a jointly filed return. It is a flat penalty that can apply regardless of how much additional tax is at issue.

Is Letter 3176C the same as an audit?

No. It is not a formal audit or examination, and it is not itself a penalty assessment. It is a warning that the IRS intends to treat a position as frivolous unless you respond correctly.

I claimed a legitimate credit, so why did I receive a frivolous return notice?

The IRS expanded automated screening after identifying widespread false refund claims tied to certain credits. Because the filters flag the presence of those credits, taxpayers who genuinely qualify can be swept up as false positives. A legitimate claim can still receive the notice; the taxpayer must then substantiate the position.

Should I amend my return if I get Letter 3176C?

Only if the flagged position was actually improper. If your position was correct, amending could mean surrendering a refund you were entitled to. The right response depends on a careful review of what was flagged and whether the return was prepared properly.

About the Author

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique firm focused on federal tax controversy and cryptocurrency tax matters. Admitted to the California Bar (No. 255463) and the U.S. Supreme Court, he has nearly two decades of federal tax controversy experience, including litigation in the U.S. Tax Court and U.S. District Court.

He is a member of the American Bar Association and the Federal Bar Association, served as San Francisco Chair of the FBA Tax Division in 2018, and sits on the Marin County Assessment Appeals Board. Learn more on his attorney bio page.

Contributor: Otto Bosch is an attorney with Kugelman Law and a former IRS Revenue Agent from the Global High Wealth Group (LB&I Division), bringing insider perspective on how the IRS screens and processes returns.

Speak With a Tax Controversy Attorney

If you have received IRS Letter 3176C, the response window is short and the penalty is steep. Kugelman Law offers paid, privileged consultations with attorney Alex Kugelman — fully protected by attorney-client privilege — to review your notice and chart the right response. Call (415) 968-1780 or contact us to schedule your consultation.

When the IRS opens an examination of your return, the first practical question is who you should hire to defend it. Most taxpayers default to their CPA — and for many routine examinations, that is the right call. Some hire a tax attorney. A few hire an Enrolled Agent. And a small number ask the more sophisticated question: should my defense team include someone who has actually worked as an IRS Revenue Agent?

This article walks through the differences honestly. Tax attorney vs CPA for IRS audit defense is not always the right framing. For some matters, a CPA is exactly what is needed. For others, only a tax attorney can do what the situation requires. And for the most consequential cases, the right answer is a defense team that combines both legal authority and the inside-the-IRS perspective of a former Revenue Agent.

This is how Kugelman Law structures its audit defense practice, and the rest of this article explains why.

The Three Professionals Who Can Represent You Before the IRS

Federal regulations recognize three categories of professionals authorized to represent taxpayers before the IRS:

Tax Attorney

A licensed lawyer admitted to one or more state bars who practices in tax. The defining attributes are legal training, attorney-client privilege, the ability to litigate in court — including U.S. Tax Court, U.S. District Court, and the Court of Federal Claims — and the authority to provide legal advice. Within tax law, attorneys vary widely in specialization. Some focus on planning and transactions; others focus on controversy and litigation. For audit defense, the relevant subspecialty is tax controversy.

Certified Public Accountant (CPA)

A licensed accountant who has passed the Uniform CPA Examination and met state licensing requirements. CPAs are tax preparation, accounting, and auditing professionals. They can represent clients before the IRS in many circumstances. The defining attributes are accounting depth, fluency in financial statements and tax returns, and — for many CPAs — a long-running client relationship built around return preparation.

Enrolled Agent (EA)

A federal credential granted by the IRS itself. Enrolled Agents have either passed the Special Enrollment Examination (a three-part exam covering individual taxation, business taxation, and representation) or qualified through prior IRS employment. EAs have unlimited practice rights before the IRS. Their defining attributes are tax-specific expertise and a federal credential focused entirely on tax matters.

A practitioner can hold more than one of these credentials. Many tax attorneys are also CPAs. Some, like Kugelman Law’s Otto Bosch, are both attorneys and Enrolled Agents — and bring direct prior experience as IRS Revenue Agents.

What Each Professional Can and Cannot Do

The differences become consequential when you look at the specific things each professional can and cannot do during an audit.

All three can represent you before the IRS in audits, appeals, and collections matters. All three can communicate with examiners on your behalf, respond to Information Document Requests, attend conferences, and negotiate settlements. For many routine examinations, this scope of authority is sufficient.

Only attorneys can:

• Provide formal legal advice, including opinions on legal questions
• Litigate cases in federal court — including U.S. Tax Court, U.S. District Court, and the Court of Federal Claims (CPAs and EAs may litigate in U.S. Tax Court only after passing the Tax Court Examination, and even then their authority is limited to that single court)
• Maintain full attorney-client privilege over communications about your case
• Apply privilege protection to work product developed in anticipation of litigation
• Handle matters with parallel criminal exposure within the privileged framework needed to protect the client

That last point — privilege — is the single most consequential difference, and it deserves its own discussion.

The Critical Difference: Attorney-Client Privilege

Communications with a tax attorney are protected by attorney-client privilege when they meet the conditions privilege requires. That means the IRS cannot compel the attorney to disclose what the client told them, and in most circumstances cannot compel the attorney’s notes, analyses, or work product developed in anticipation of litigation.

Communications with a CPA or EA do not have the same protection. The Internal Revenue Code provides a limited “tax practitioner privilege” under Section 7525 — but it is significantly narrower than attorney-client privilege. Section 7525 privilege does not apply to criminal matters. It does not apply to written tax shelter advice. It does not apply in state proceedings. And courts have generally read it more narrowly than many taxpayers expect.

The practical implication is this: if there is any meaningful chance that an examination has criminal implications — which is true in eggshell audits, in cases involving large unreported income, in cases with foreign account issues, and in cases involving cryptocurrency where the digital asset question was answered incorrectly — communications with a CPA or EA are not safely privileged. Communications with an attorney are.

This is why sophisticated tax controversy practice often involves a “Kovel arrangement” — a structure in which a CPA is engaged by the attorney rather than directly by the client, so that the CPA’s work falls within the attorney’s privilege. That structure is appropriate in many controversy matters. It is also a structure that requires an attorney at the center of the engagement.

When You Need a Tax Attorney (and When You Don’t)

Not every IRS audit requires an attorney. A correspondence audit on a missing 1099 or an arithmetic error generally does not. A modest Schedule C examination focused on documentation of business expenses generally does not. For these matters, a CPA or EA — particularly one familiar with the client and the return — is often the right professional to handle the response.

A tax attorney becomes the appropriate choice when one or more of the following is true:

• The dollar amounts are significant. Audits with potential exposure in the high five figures and above generally justify the additional cost of attorney representation.
• The technical issues are complex. Partnership and S-corporation audits, related-party transactions, basis disputes, and characterization questions benefit from legal analysis as well as accounting analysis.
• There is parallel criminal exposure. Eggshell and reverse-eggshell audits require attorney representation for privilege reasons alone.
• Foreign accounts are involved. FBAR penalties, Form 8938 issues, and the willfulness analyses that drive offshore disclosure outcomes are legal questions with severe penalty consequences.
• Cryptocurrency is involved. IRS cryptocurrency audits frequently combine unreported income, foreign exchange use, and digital asset question issues that benefit from legal analysis.
• The case is likely to escalate. Matters that may proceed to Appeals or to U.S. Tax Court litigation need an attorney engaged from the start, because the record built during the examination is what the case is ultimately decided on.
• You disagree fundamentally with the IRS. Where the dispute is not about documenting items but about legal positions the IRS is asserting, attorney involvement is generally appropriate.
• Penalties are aggressive. Civil fraud, substantial understatement, and other significant penalties often require legal defense beyond accounting fluency.

The Often-Overlooked Question: Has Anyone on Your Team Worked Inside the IRS?

Most discussions of tax attorney versus CPA stop at the comparison above. There is a further layer that tends to be invisible from outside the controversy field: the value of having someone on the defense team who has actually worked as an IRS Revenue Agent.

A former Revenue Agent attorney brings something neither a tax attorney nor a CPA can bring on their own — direct, internal experience with how the IRS actually conducts examinations. This includes:

• Knowing what an agent’s first IDR will likely ask for and what the second and third will probably address
• Recognizing when an agent is genuinely committed to a position versus when the agent is fishing
• Understanding the internal review architecture — supervisor review, IRS Counsel coordination, fraud referral pathways — that filters every meaningful decision an agent makes
• Reading the difference between a routine audit and an eggshell audit early enough to adjust strategy
• Building a defense record that anticipates what the IRS will need at Appeals or in Tax Court

This is the perspective Otto Bosch brings to Kugelman Law. Before joining the firm in February 2026, Otto served as a Revenue Agent in the IRS Global High Wealth Group within LB&I — the unit that audits the most complex returns of the wealthiest U.S. taxpayers. He is also an Enrolled Agent and holds an LL.M. in Taxation. We covered this layered advantage in detail in our article on why a former IRS revenue agent attorney changes audit defense, which complements our broader explanation of what IRS Revenue Agents actually do inside an examination.

For taxpayers facing significant IRS examinations, this third dimension — beyond “attorney versus CPA” — is often the deciding factor in case outcomes.

How Kugelman Law’s Team Combines These Capabilities

Kugelman Law is structured deliberately around the capabilities a serious controversy matter actually requires.

Founder Alex Kugelman brings nearly two decades of federal tax controversy experience, including litigation in U.S. Tax Court and U.S. District Court. He is a member of the State Bar of California, served as San Francisco Chair of the Federal Bar Association’s Tax Division in 2018, and is a nationally recognized cryptocurrency tax attorney featured on the Bitcoin.tax podcast and The Mark Milton Show. The litigation capability matters because the credible threat of taking a case to court is what gives administrative resolution its leverage.

Otto Bosch brings the inside-the-IRS perspective from his time as a Revenue Agent in the Global High Wealth Group, plus additional technical depth from his prior role at KPMG’s Washington National Tax practice. He holds an LL.M. in Taxation with a focus on Partnership Tax and is an Enrolled Agent.

The combination — attorney + IRS-insider + crypto fluency + federal litigation capability — is what most controversy practices simply cannot offer. CPAs and EAs working alone cannot provide privilege or court access. Tax attorneys without IRS experience operate without the insider perspective. Firms with neither litigation experience nor inside-the-IRS background are missing both ends of the controversy spectrum.

Representative outcomes from the firm’s audit defense practice include a $365,000 tax debt reduced to a zero-dollar liability, a multi-year audit and non-filing matter resolved with minimal payment, and ten years of unfiled returns brought into compliance with a successful outcome. Results depend on specific facts. Past results do not guarantee future outcomes.

A Practical Decision Framework

For taxpayers trying to decide who should handle their IRS audit, a practical framework:

1. For routine correspondence audits and simple documentation matters — your existing CPA or EA is often the right choice. The cost-benefit analysis favors them.
2. For substantive examinations involving real money or complex issues — engage a tax controversy attorney. The privilege protection alone justifies the choice in many cases.
3. For high-stakes examinations — Global High Wealth, LB&I, multi-year non-filing, foreign accounts, cryptocurrency, or parallel criminal exposure — engage a tax controversy firm whose team includes both senior litigation experience and former IRS-insider perspective.

The decision is not always either/or. Many engagements involve attorney-led representation with a CPA performing supporting accounting work under the attorney’s privilege through a Kovel arrangement. The point is that the highest-stakes cases benefit from legal authority, privilege protection, litigation capability, and inside-the-IRS perspective — and the question is whether your defense team has them.

Frequently Asked Questions

Can a CPA represent me in an IRS audit?

Yes. CPAs have authority to represent taxpayers before the IRS in audits, appeals, and collections matters. For many routine examinations, CPA representation is appropriate. The limitations of CPA representation become significant in cases with criminal exposure, in matters likely to require litigation, and in matters where attorney-client privilege protection is needed.

Do I have attorney-client privilege with a CPA?

Not in the same way you do with an attorney. The Internal Revenue Code provides a limited “tax practitioner privilege” under Section 7525, but it is substantially narrower than attorney-client privilege. It does not apply in criminal matters, in tax shelter advice, or in many state proceedings. For matters where privilege is important, attorney representation is generally needed.

Is a tax attorney more expensive than a CPA?

Generally yes — hourly rates for tax controversy attorneys are higher than CPA rates. Whether the higher cost is justified depends on the matter. For complex, high-stakes, or potentially adversarial cases, attorney involvement frequently produces better outcomes that more than offset the cost difference. For routine matters, a CPA may be the more efficient choice.

What is an Enrolled Agent and how do they fit in?

An Enrolled Agent is a federal credential granted by the IRS. EAs have unlimited practice rights before the IRS and focus exclusively on tax matters. They can represent taxpayers in audits, appeals, and collections. They do not have legal training or attorney-client privilege, and their authority to litigate is limited. Some practitioners — like Kugelman Law’s Otto Bosch — are both attorneys and Enrolled Agents.

Should I keep my CPA involved if I hire a tax attorney?

Often, yes. Many controversy engagements work best when the attorney leads representation and the CPA contributes specialized accounting work — particularly on complex returns, basis reconstructions, and ongoing compliance. The CPA’s work can be performed under the attorney’s privilege through a Kovel arrangement when appropriate. Coordinated team representation is frequently the optimal structure.

Speak With Kugelman Law

If you are facing an IRS audit, controversy, or complex tax matter and want to understand how the right combination of legal authority, IRS-insider perspective, and federal litigation capability can shape your defense, schedule a paid privileged consultation with Kugelman Law. Call (415) 968-1780 or visit our contact page. All consultations are fully protected by attorney-client privilege.

An IRS cryptocurrency audit is no longer a theoretical concern for active traders, NFT participants, DeFi users, or anyone who has held digital assets through one of the bull cycles of the past decade. It is an active risk. And the agents conducting these examinations are increasingly trained, equipped, and supported by the agency’s data resources to develop adjustments that can carry into six and seven figures of assessed tax, penalties, and interest.

This article explains what an IRS cryptocurrency audit actually looks like from the inside — how returns are selected, what agents are trained to examine, what data the IRS already has, and where defense actually matters. The perspective is informed by Kugelman Law attorney Otto Bosch, a former Revenue Agent in the IRS Global High Wealth Group within the Large Business and International (LB&I) Division, paired with founder Alex Kugelman‘s nearly two decades of federal tax controversy experience and one of the country’s earliest dedicated cryptocurrency tax practices.

How the IRS Is Building Its Crypto Enforcement Capability

Understanding an IRS cryptocurrency audit starts with understanding what the IRS now knows — and how it knows it.

Exchange data through John Doe summonses. The IRS has used John Doe summonses to compel major U.S. cryptocurrency exchanges to produce account holder data, including identification information and transaction histories. The summonses served on Coinbase, Kraken, Circle, and others have produced datasets covering significant numbers of U.S. taxpayers. That data sits in IRS systems and is matched against filed returns.

Form 1099 reporting and digital asset broker rules. Expanded broker reporting rules require digital asset platforms to report transaction information directly to the IRS on information returns. The result is a steadily improving stream of third-party data that the IRS uses to identify reporting gaps, in much the same way W-2s and traditional 1099s are used.

The Form 1040 digital asset question. Every Form 1040 filed since 2019 has required the taxpayer to answer a yes-or-no question about digital asset activity. Answering that question incorrectly — particularly answering “no” when the taxpayer had reportable activity — is a fact the IRS pays attention to. It can support penalty positions, including in some circumstances civil fraud.

Blockchain analytics partnerships. The IRS works with blockchain analytics firms — Chainalysis among them — to trace transactions across the public blockchain, link wallet addresses to identified taxpayers, and reconstruct activity that occurred outside reporting exchanges. The blockchain is public; identifying who controls a particular address is the harder part, and the analytics tools the IRS has access to are increasingly capable of doing it.

Operation Hidden Treasure and successor initiatives. Beginning with Operation Hidden Treasure, the IRS has run dedicated training and enforcement programs focused on cryptocurrency. Revenue Agents working these cases receive specialized training. Specialized criminal investigation resources within IRS-CI focus on digital assets. And large-case examinations within LB&I increasingly include cryptocurrency-specific issue identification.

The cumulative effect is that an IRS cryptocurrency audit in 2026 is not the same examination it was five years ago. Agents arrive with significantly more information than taxpayers tend to assume.

Who Gets Selected for an IRS Cryptocurrency Audit

Crypto returns reach Revenue Agents through several paths, and the path tells the defense team something about the IRS’s interest in the case. As a general matter — and consistent with how returns are selected for examination across the IRS, which is covered in more depth in our guide to what IRS Revenue Agents do — crypto cases tend to be selected through:

• Information matching mismatches. When exchange-reported data shows reportable activity that does not appear on the taxpayer’s return, the gap is flagged for review. This is one of the most common entry points for crypto examinations.
• The Form 1040 digital asset question. Returns answering “no” while exchange data shows otherwise are high priority. So are returns answering “yes” with implausibly small reported activity relative to known holdings.
• John Doe summons follow-up. Account data produced through John Doe summonses is reviewed against filed returns; significant unreported activity surfaces examination candidates.
• Project initiatives. The IRS has run and continues to run focused enforcement projects on specific crypto issues — high-volume traders, NFT activity, DeFi transactions, and offshore exchange usage among them.
• Related-return pickups. When one taxpayer’s audit surfaces crypto activity involving counterparties — peer-to-peer transactions, partnership distributions of digital assets, business payments in crypto — the related taxpayer’s return can be opened for examination.
• Whistleblower referrals. The IRS Whistleblower Program receives, and acts on, referrals involving crypto activity.

The path matters because it shapes the examination. A mismatch-driven case usually starts narrow and follows the data. A project-driven case is concentrated on the project’s target issue. A John Doe summons follow-up may already include significant data the agent has reviewed before contacting the taxpayer.

What Revenue Agents Are Trained to Look For in a Cryptocurrency Audit

An IRS cryptocurrency audit covers a defined set of issues that Revenue Agents are trained to develop. Knowing what those issues are — before the first Information Document Request lands — is one of the most important advantages a defense team can bring to the table.

Unreported Disposition Income

The most common issue is straightforward: dispositions that should have been reported as taxable events were not. Every sale, trade, and use of cryptocurrency to purchase goods or services is generally a taxable event, and the gain or loss is calculated against the asset’s basis. Crypto-to-crypto trades are taxable. Spending Bitcoin on a meal is taxable. Swapping ETH for an NFT is taxable. Many taxpayers — and even some preparers — have historically missed these dispositions, and reconstructing them is the heart of most crypto examinations.

Basis and Holding Period Reconstruction

Once dispositions are identified, the next question is basis. What did the taxpayer pay for the asset, when, and how is the cost allocated across multiple acquisitions? Crypto basis is uniquely difficult because it spans years, exchanges, wallets, and methods of acquisition. Agents trained on these cases know that taxpayer-prepared crypto records are often incomplete, that exchange CSV exports do not always reconcile cleanly, and that an undocumented basis position will be challenged. Holding periods — long-term versus short-term — drive significant differences in tax rate and are scrutinized.

Income From Mining, Staking, Airdrops, and Hard Forks

Income items that arise outside of dispositions are a separate audit category. Mining and staking rewards are generally taxable as ordinary income at fair market value when received, and they create a basis carried into any later disposition. Airdrops and hard forks have IRS guidance — including Revenue Ruling 2019-24 — that agents apply. These items are routinely under-reported, and they are routinely raised in cryptocurrency examinations.

NFT-Specific Issues

Non-fungible tokens introduce their own audit issues: characterization questions (collectible versus capital asset versus inventory), royalty income, gas fees, the treatment of mints, and platform-specific reporting peculiarities. Revenue Agents working NFT tax compliance matters are trained on the issues that NFT activity tends to produce — and they tend to produce a lot of them.

DeFi Activity and Wrapped Tokens

DeFi protocols — lending, liquidity provision, yield farming, wrapping and unwrapping tokens — generate transactions that may or may not be taxable events depending on facts and characterization, and the area is technically nuanced. Agents look for the obvious — unreported income from yield farming and lending — and increasingly for the more sophisticated — characterization of liquidity pool entries and exits, and the tax consequences of wrapping transactions.

Foreign Exchange Use and FBAR Exposure

Use of foreign-domiciled cryptocurrency exchanges raises issues that go beyond the tax return itself. Foreign accounts holding cryptocurrency may trigger FBAR (FinCEN Form 114) and Form 8938 reporting obligations, and the IRS’s position on these obligations has evolved. Penalties for non-filing of FBARs and information returns can be severe and are independent of any income tax owed. Resolution typically involves streamlined offshore procedures, delinquent FBAR submissions, or other voluntary disclosure pathways depending on the facts.

The Form 1040 Digital Asset Question

Agents are specifically trained to examine the digital asset question on Form 1040. A “no” answer in a year of significant activity is a finding agents log and use — supporting accuracy-related penalties, in appropriate cases supporting fraud penalties, and in the most serious cases supporting referrals to IRS Criminal Investigation.

Pig Butchering and Investment Scam Losses

A growing area of crypto audit activity involves taxpayers who lost significant funds to pig butchering and similar crypto investment scams. The tax treatment of these losses is technical, the documentation challenges are significant, and the available deductions are narrower than many taxpayers and preparers assume. Audits in this area frequently turn on whether the taxpayer can substantiate the loss and characterize it correctly.

The Anatomy of an IRS Cryptocurrency Audit

Once an examination opens, a cryptocurrency audit follows the general arc of any IRS examination — but with crypto-specific document requests and analytical steps layered in. The early stages are often the most consequential.

The opening Information Document Request typically asks for, among other things: a complete list of every exchange and wallet ever used; CSV exports or transaction histories from each exchange; lists of self-custody wallet addresses and their public keys or transaction logs; mining and staking records; any tax software output (such as files from CoinTracker, Koinly, ZenLedger, or similar) used to prepare the return; and any third-party reports received. The first IDR is broad by design. It is the agent’s tool for understanding the universe of activity before drilling into specific issues.

How that first IDR is responded to often determines how the audit proceeds. Volunteering wallets the IRS does not appear to know about, providing reconciliations that reveal previously undisclosed activity, or producing records that contradict the return are decisions that should never be made without strategic review. They cannot be unmade later.

From there, the agent reconciles taxpayer-produced data against exchange records the IRS has received independently, runs blockchain analytics where appropriate, and develops issues. Specialists may be brought in for technical questions. The case proceeds through the same internal review and managerial sign-off architecture that governs any IRS examination, and closes with either a no-change, an agreed adjustment, or a Revenue Agent’s Report and 30-day letter setting up Appeals.

Why Crypto Audits Are Especially High-Stakes

An IRS cryptocurrency audit can quickly produce assessment exposure that surprises taxpayers. Several factors compound:

• Multi-year scope. Crypto audits frequently look at multiple years simultaneously. The statute of limitations is generally three years, but it extends to six years for substantial omissions and is unlimited for fraud or non-filed returns.
• Penalty stacking. Accuracy-related penalties (typically 20%) can be combined with FBAR penalties (which can reach the greater of $10,000 or 50% of account value per willful violation), Form 8938 penalties, and in serious cases civil fraud penalties (75%).
• Basis disputes that move large numbers. An undocumented basis position can convert what the taxpayer considered a modest gain into a much larger one. Where the taxpayer assumed $100,000 in basis and cannot prove it, the agent may treat basis as $0 — and the assessment moves accordingly.
• Foreign account exposure. Use of offshore exchanges or foreign-held wallets can trigger reporting obligations entirely separate from the income tax — with their own penalty regimes that can dwarf the underlying tax.
• Eggshell and reverse-eggshell concerns. Where significant activity was unreported and the digital asset question was answered “no,” civil examinations carry the possibility of referral to IRS-CI. Reading that risk correctly is critical.

This combination of factors is why a former IRS revenue agent attorney on the defense team is particularly valuable in cryptocurrency examinations. The technical issues are unfamiliar to most general tax practitioners. The risks compound quickly. And the IRS’s training, tooling, and posture in this space continue to evolve in ways most taxpayers cannot see from the outside.

How Kugelman Law Defends IRS Cryptocurrency Audits

Kugelman Law has defended cryptocurrency tax matters since the practice area existed. Alex Kugelman has been featured nationally on the Bitcoin.tax podcast and The Mark Milton Show discussing IRS digital asset enforcement, and he has built one of the country’s earliest dedicated cryptocurrency accounting and IRS crypto audit defense practices. Otto Bosch brings the inside-the-IRS perspective developed during his time as a Revenue Agent in the Global High Wealth Group within LB&I.

The combination matters in a crypto audit. Crypto fluency without IRS-insider perspective leaves the defense reading blind on the agent’s posture and the agency’s internal calculus. IRS-insider perspective without crypto fluency leaves the defense unable to engage the technical issues that drive the case. Both are necessary. Few firms offer both under one roof.

Representative outcomes from the firm’s controversy practice include a $365,000 tax debt reduced to a zero-dollar liability, a multi-year audit and non-filing matter resolved with minimal payment, and ten years of unfiled returns brought into compliance with a successful outcome. Results depend on specific facts. Past results do not guarantee future outcomes.

Frequently Asked Questions

Can the IRS see my crypto wallet?

The blockchain is public. Anyone can see transactions associated with a wallet address. What is not always public is who controls a particular address. The IRS uses blockchain analytics tools, exchange data obtained through John Doe summonses, expanded information reporting, and other techniques to associate addresses with identified taxpayers. Self-custody wallets are not invisible to the IRS — and the assumption that they are has produced significant exposure for taxpayers who relied on it.

What triggers an IRS cryptocurrency audit?

Common triggers include mismatches between exchange-reported data and the filed return, a “no” answer to the Form 1040 digital asset question paired with known activity, John Doe summons data, project-based enforcement initiatives, related-return pickups from another taxpayer’s audit, and whistleblower referrals. Selection paths shape the scope of the resulting examination.

Do I have to report crypto-to-crypto trades?

Yes. Under current IRS guidance, exchanges of one cryptocurrency for another are taxable events that produce gain or loss measured against the disposed asset’s basis. This is true even when no fiat currency is involved. Failure to report crypto-to-crypto trades is one of the most common issues identified in IRS cryptocurrency audits.

What if I used a foreign cryptocurrency exchange?

Use of foreign-domiciled exchanges can trigger FBAR and Form 8938 reporting obligations separate from the income tax return. Penalties for non-filing of these information returns can be severe. Resolution typically involves streamlined offshore procedures, delinquent FBAR submissions, or other voluntary disclosure programs depending on the specific facts and the willfulness analysis.

Can I just amend my returns to fix unreported crypto?

Sometimes — but the answer depends heavily on the facts. Amending returns can be the right approach in some cases and exactly the wrong approach in others, particularly where there is potential criminal exposure or where the taxpayer is already under examination. Decisions about amending, voluntarily disclosing, or simply waiting should be made with experienced controversy counsel — not unilaterally by the taxpayer or a preparer without controversy expertise.

Speak With Kugelman Law

If you are facing an IRS cryptocurrency audit, have received an IRS notice involving digital assets, or have unreported crypto activity you are trying to resolve correctly, schedule a paid privileged consultation with Kugelman Law. Call (415) 968-1780 or visit our contact page. All consultations are fully protected by attorney-client privilege.

The article addresses the IRS Large Business and International (LB&I) Division’s 2024 audit campaign targeting deferred legal fee structures — arrangements in which law firms representing clients on contingency defer recognition of fee income through third-party structures. The campaign followed the IRS’s 2022 generic legal advice memorandum (AM 2022-007), which concluded that fees deferred through certain third-party arrangements must be included in the law firm’s gross income in the year the funds are transferred to the third party. Attorneys interviewed for the Tax Notes article reported that despite the campaign announcement, they have not yet seen active audit activity in the area.

Otto Bosch — a former IRS Revenue Agent from the LB&I Global High Wealth Group who joined Kugelman Law in February 2026 — explained why that gap is normal.

“It is generally normal for an LB&I audit campaign — or any IRS enforcement initiative — to be announced before field agents receive formal training and before training materials are finalized,” Bosch told Tax Notes.

Otto identified the structural reasons for the lag — including required reviews of the Internal Revenue Manual and relevant court decisions — and noted that IRS University, the agency unit responsible for developing and delivering training across the IRS, has been affected by recent changes at the agency.

The Tax Notes piece reports that more than 200 LB&I agents recently received two days of training on the deferred legal fee topic, according to two sources familiar with the matter. That development confirms what Otto and other former IRS practitioners have been telling clients for months: active enforcement is moving from “announced” to “trained” — and the audit window is opening.

Why This Matters for Tax Practitioners and Law Firms Right Now

The announce-then-train gap is structurally normal, as Otto explained. What is not normal is the size of the window the gap creates for practitioners and their clients — and the cost of not using it well.

Three things are true about the current posture of the deferred legal fee campaign:

1. The framework that defines compliance is clearer than the rhetoric suggests. The IRS is not targeting all deferred attorney fee structures. As George A. Luecke and Patrick J. Hindert observed in a June 2025 Tax Notes piece cited in the May 2026 article, the campaign does not appear to target structures that are compliant with the framework laid out in Childs v. Commissioner, 103 T.C. 634 (1994). The IRS’s concern is with arrangements that “materially deviate from Childs” — particularly those involving “aggressive promoters, attorney-taxpayer loans, or other structural elements that, while not technically loans, produce similar economic effects for attorney-taxpayers.”
2. The promoter investigation tells you where the IRS is going. The Tax Notes reporting confirms that the IRS issued information document requests to Brook-Hollow Capital LLC and Brook-Hollow Financial LLC in August 2023 as part of a Section 6700 investigation into whether the companies organized or promoted abusive tax shelters. The IRS’s understanding of the Brook-Hollow structure — a fee paid to one entity and a loan of up to 97% of the deferred legal fees from a related entity — is the kind of structure most at risk.
3. Criminal Investigation is starting to ask questions. The Tax Notes article reports that an IRS special agent asked about deferred legal fee arrangements during a client meeting several months ago, suggesting that IRS-CI is at least exploring the topic. While LB&I has historically been reluctant to make criminal referrals (as former IRS fraud enforcement adviser Michael Welu noted in the article), the involvement of criminal investigators changes the risk calculus for any practitioner whose structures sit outside the Childs safe harbor.

What the IRS-Insider Perspective Adds

One of the reasons Otto was sought as a source for the Tax Notes piece is that the procedural realities of IRS examination — how campaigns are launched, how field agents are trained, how the Internal Revenue Manual is updated, how cases get selected and developed — are not transparent from outside the agency. Practitioners and taxpayers tend to react to enforcement headlines without a clear sense of where the campaign actually is in its operational cycle.

That cycle matters because the right defensive posture depends on the campaign’s stage:

• In the early stages, before active examinations, the priority is positioning — reviewing existing structures against the Childs framework, identifying structural features that materially deviate from it, and considering whether modifications, unwinds, or other proactive steps are warranted.
• As field agents complete training and examinations begin, the priority shifts toward defense readiness — understanding what an LB&I examination of these structures will actually look like, what Information Document Requests the agency is likely to issue, and how the audit will be developed against the framework set out in AM 2022-007 and applied through the lens of Childs.
• Once examinations are active, the priority is execution — defending the specific structure on the specific facts, with the case file built from day one for what comes next at Appeals or in U.S. Tax Court.

The May 2026 Tax Notes reporting suggests the campaign is moving out of stage one and into stage two. For practitioners and law firms with deferred legal fee structures in place — or contemplating them — that transition is the moment when proactive review is most valuable.

How Kugelman Law Approaches These Matters

Kugelman Law advises tax practitioners, law firms, and high-net-worth taxpayers on the full lifecycle of federal tax controversy matters — from pre-controversy structural review through IRS examination defense and, where necessary, U.S. Tax Court litigation. The firm’s combination of capabilities is structured deliberately for matters like this one.

Founder Alex Kugelman brings nearly two decades of federal tax controversy experience, including litigation in U.S. Tax Court and U.S. District Court. Otto Bosch brings the inside-the-IRS perspective from his time as a Revenue Agent in the LB&I Global High Wealth Group — the specialized unit that examines the most complex returns of the wealthiest U.S. taxpayers. We covered the strategic value of this combination in detail in our article on why a former IRS revenue agent attorney changes audit defense, and the underlying examination dynamics in our pieces on what IRS Revenue Agents do and inside the IRS audit playbook.

For practitioners with deferred legal fee structures, the practical question is whether the structure sits comfortably inside Childs, whether any structural elements would be characterized by an LB&I examiner as materially deviating from Childs, and what — if anything — should be done before active examinations begin.

Speak With Kugelman Law

If you advise on or use deferred legal fee structures, or if you have any other complex federal tax controversy matter you would like to discuss, schedule a paid privileged consultation with Kugelman Law. Call (415) 968-1780 or visit our contact page. All consultations are fully protected by attorney-client privilege.

Read the full Tax Notes article: “More Scrutiny of Deferred Legal Fee Structures Could Be Coming” by Lauren Loricchio (Tax Notes, May 26, 2026). Subscription required.

About the Author

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique tax controversy and cryptocurrency tax firm serving California and clients nationwide. With nearly two decades of federal tax controversy experience — including litigation in the U.S. Tax Court and U.S. District Court — Alex represents individuals and businesses in their most consequential disputes with the IRS and the California Franchise Tax Board. He is a member of the State Bar of California (No. 255463), admitted to the Bar of the U.S. Supreme Court, and served as San Francisco Chair of the Federal Bar Association’s Tax Division in 2018. He is also a member of the Marin County Assessment Appeals Board and a nationally recognized cryptocurrency tax attorney featured on the Bitcoin.tax podcast and The Mark Milton Show. Read Alex’s full bio.

If you have received an IRS audit notice — or you are worried one might be coming — one of the first questions worth answering is who, exactly, will be examining your return. The answer matters more than most taxpayers realize. The IRS is not a single, undifferentiated organization. Examinations are conducted by specific employees with specific titles, training, and authority — and the most consequential examinations are handled by a particular kind of IRS employee called a Revenue Agent.

So what does an IRS revenue agent do? In short: a Revenue Agent is the IRS employee assigned to conduct in-depth examinations of complex tax returns, develop adjustments, and build the case file the agency relies on at every stage of dispute resolution. A Revenue Agent’s findings become the basis for proposed assessments, penalties, and — if the case escalates — the record that follows the matter into Appeals or U.S. Tax Court.

This article walks through the role of an IRS Revenue Agent from the inside: how cases are selected, what an examination actually looks like step by step, how internal IRS review works, and what taxpayers should understand before responding to the first contact letter. The perspective is informed by Kugelman Law attorney Otto Bosch, who served as a Revenue Agent in the IRS Global High Wealth Group within the Large Business and International (LB&I) Division before joining the firm in February 2026.

What Is an IRS Revenue Agent?

A Revenue Agent is a credentialed IRS employee whose job is to conduct examinations of tax returns. Most Revenue Agents have backgrounds in accounting and have completed extensive in-house IRS training in tax law, examination procedure, and case development. They are professionals, not paper-pushers, and the cases they handle are generally the cases the IRS has decided are worth investing real examination resources in.

Revenue Agents work civilly. That is, they are not criminal investigators (those are Special Agents within IRS Criminal Investigation, or IRS-CI). But Revenue Agents do conduct what the IRS calls eggshell and reverse-eggshell audits — civil examinations that may have parallel or downstream criminal implications — and they are trained to recognize the badges of fraud and to coordinate with IRS-CI when appropriate.

The Revenue Agent’s authority during an examination is significant. They can issue Information Document Requests (IDRs), conduct interviews, summon third-party records under appropriate procedures, propose adjustments, and recommend penalties. What they cannot do alone is impose a final tax liability — that comes through the formal notice procedures and, if contested, through Appeals or the courts.

How IRS Revenue Agents Are Different from Other IRS Personnel

One of the most common sources of confusion for taxpayers is conflating different IRS roles. Three roles in particular are routinely mistaken for one another:

• Revenue Agents conduct civil audits of tax returns. They are accountants who develop adjustments to taxes owed.
• Revenue Officers collect taxes that have already been assessed. They handle levies, liens, wage garnishments, and the negotiation of installment agreements and offers in compromise.
• Special Agents are criminal investigators within IRS-CI. They build criminal tax fraud, money laundering, and related cases for prosecution.

Each role uses different procedures, requires different defensive strategies, and presents different risks. Knowing which IRS employee you are dealing with is the first step in any tax controversy. If a Revenue Officer is on your matter, the assessment phase is over and the focus has shifted to collections defense. If a Special Agent shows up, civil strategy is no longer the right framework. If a Revenue Agent is conducting your audit, the case is in the development phase — and how that development is managed will define the outcome.

How a Return Lands on a Revenue Agent’s Desk

Returns reach Revenue Agents through several distinct paths, and the path matters because it tells the agent — and an experienced defense team — something about the IRS’s interest in the case.

DIF scoring. The Discriminant Function (DIF) system is a statistical model the IRS uses to score returns for audit potential. High-DIF returns are flagged for review and routed for selection. Most ordinary audits begin this way.

Related-return pickups. When a Revenue Agent is examining one return and finds issues that connect to another taxpayer’s return — a partnership and a partner, a corporation and a shareholder, related entities under common ownership — the related return can be opened for examination as well. This is one reason a single audit can quickly grow into multiple coordinated examinations.

Information matching. The IRS receives extensive third-party information — W-2s, 1099s, K-1s, foreign account reports, broker reports, cryptocurrency exchange disclosures — and matches that data against filed returns. Material mismatches generate notices, and significant mismatches can escalate into a full examination.

Compliance projects and initiatives. The IRS regularly runs enforcement initiatives focused on specific issues — syndicated conservation easements, microcaptive insurance arrangements, cryptocurrency reporting, foreign account compliance, and employee retention credit claims, among others. Returns within the scope of an active initiative are far more likely to be selected.

Whistleblower and informant referrals. The IRS Whistleblower Program pays awards for actionable information about tax noncompliance, and substantiated referrals can result in examination.

Global High Wealth and LB&I selection. For the most complex high-net-worth and corporate examinations, returns are selected through specialized risk-based processes within LB&I, including the enterprise-level approach used by the Global High Wealth Group.

The path of selection often shapes the contour of the examination. A DIF-selected return is usually examined for the issues that drove the score. A related-return pickup tends to focus on the connecting transactions. A project-driven examination is concentrated on the specific issue the project is targeting. Recognizing which is which is one of the things a former IRS revenue agent attorney brings to a defense team from day one.

The Anatomy of an IRS Audit from a Revenue Agent’s Perspective

When a Revenue Agent is assigned a case, the examination unfolds along a fairly predictable arc. Understanding that arc — and the agent’s internal incentives at each stage — is essential to responding effectively.

Pre-Contact and Initial Review

Before the agent ever contacts the taxpayer, the case goes through pre-contact analysis. The agent reviews the return, analyst notes, prior-year returns, and any third-party data already on file. They develop a preliminary issue list — the things they expect to examine — and identify the documents they will need. By the time the audit notice arrives in the mail, the agent has already formed initial views about the case. Sophisticated taxpayers (and sophisticated defense counsel) plan around that reality.

The Opening Conference and First Information Document Request

The first formal contact is generally a notice of examination followed by an opening conference (in person, by telephone, or virtually). At or shortly after the opening conference, the agent issues an initial Information Document Request — the IDR — listing documents and information needed to proceed.

The first IDR is one of the most important documents in the entire examination. It defines the initial scope, signals what the agent considers most important, and frames every subsequent issue. Responses to the first IDR generate the second IDR, which is often where the audit’s actual depth becomes visible. Taxpayers who treat the first IDR as routine paperwork frequently regret it.

Issue Development and Fieldwork

This is the heart of the examination. The agent reviews documents, conducts interviews, examines books and records, and develops each issue toward a recommended adjustment. Within LB&I, this stage often involves multiple specialists — international examiners, computer audit specialists, engineers, financial product experts — coordinating on technical questions. Within the Global High Wealth Group, the entire enterprise of related entities and transactions is considered together rather than examined return by return.

During fieldwork, the agent is not only developing issues but also building the workpapers — the internal documentation that will support each adjustment through supervisor review, Appeals, and any subsequent litigation. That workpaper file is the case. Whatever is in it is what the IRS will rely on later. Whatever is not in it is what the taxpayer can challenge.

Internal Review, Supervisor Sign-Off, and Counsel Coordination

Revenue Agents do not act alone. Throughout an examination, supervisors review the agent’s work, push back on weak positions, and approve significant decisions. For complex issues, IRS Counsel may be involved to provide legal advice on questions the examination cannot resolve internally. Aggressive penalties, fraud referrals, summons enforcement, and other escalations all run through layered approval processes.

This internal architecture creates leverage points for the defense. A position the agent personally favors but the manager is reluctant to defend is a different position than one with full institutional backing. Recognizing the difference — and knowing where to apply pressure — is the kind of insight that comes from having been on the inside.

Closing the Case

Examinations close in one of three general ways. A “no-change” closing means the agent did not find adjustments and the return is accepted as filed. An “agreed” closing means the taxpayer accepts the proposed adjustments (typically by signing Form 870 or similar), the deficiency is assessed, and collections begin if amounts are owed. An “unagreed” closing means the taxpayer contests the proposed adjustments, the agent issues a Revenue Agent’s Report and a 30-day letter, and the case proceeds to Appeals — and ultimately, if necessary, to U.S. Tax Court following a statutory notice of deficiency.

How a case closes is heavily influenced by how it was developed during fieldwork. Cases that are positioned correctly during the examination tend to close cleanly. Cases that are mishandled tend to close badly — with assessments larger than they needed to be, penalties that should not have applied, or records that handicap any subsequent appeal.

Where IRS Revenue Agents Work: SB/SE, LB&I, and Global High Wealth

Not all Revenue Agents are equivalent. The IRS organizes its examination function into divisions, and the division handling a particular case tells you a great deal about the agency’s interest and approach.

Small Business / Self-Employed (SB/SE). This is the largest examination division by case volume. SB/SE Revenue Agents handle most individual and small-business audits — Schedule C examinations, smaller partnership audits, closely held business reviews, and a wide range of personal income tax matters.

Large Business and International (LB&I). LB&I handles the more complex side of corporate, partnership, and high-net-worth examinations. LB&I cases tend to involve higher stakes, more specialists, longer timelines, and significantly more sophistication in issue development.

Global High Wealth Group. Within LB&I, the Global High Wealth Group is the most specialized of all — the team that examines the most complex returns of the wealthiest U.S. taxpayers. Global High Wealth uses an enterprise audit approach, looking at the full web of related entities, trusts, partnerships, and personal returns as an integrated whole. Adjustments developed under that approach can surface issues that would be invisible in a return-by-return examination.

For taxpayers facing a Global High Wealth or LB&I examination, the importance of insider perspective is at its highest. The procedures, specialists, internal review processes, and risk calculus inside that group are not visible from the outside. This is precisely the perspective Otto Bosch brings to every Kugelman Law audit defense matter.

What This Means for You as a Taxpayer Under Audit

Two practical implications follow from understanding how Revenue Agents actually work.

First, the early stages of an examination are the most consequential. By the time the case reaches Appeals or court, much of the record is already fixed. Decisions made in responding to the first IDR, in handling the opening conference, in giving (or not giving) interviews, and in producing (or not producing) documents shape the case in ways that cannot be undone later. Audit defense begins with the first contact letter, not with the 30-day letter.

Second, who is on the other side of the table matters. A Revenue Agent in SB/SE conducting a routine Schedule C audit operates very differently than a Global High Wealth team conducting a coordinated enterprise examination. Defense strategy should match the examination — and that match starts with correctly identifying who is examining you and why.

These are the considerations that drive how Kugelman Law approaches every audit defense matter. With founder Alex Kugelman‘s nearly two decades of federal tax controversy and U.S. Tax Court litigation experience and Otto Bosch‘s direct background as a former Revenue Agent in the IRS Global High Wealth Group, the firm pairs federal litigation capability with inside-the-IRS examination experience — a combination most controversy practices simply cannot offer.

Representative outcomes from the firm’s controversy practice include a $365,000 tax debt reduced to a zero-dollar liability, a multi-year audit and non-filing matter resolved with minimal payment, and ten years of unfiled returns brought into compliance with a successful outcome. Results depend on specific facts. Past results do not guarantee future outcomes.

Frequently Asked Questions

What is the difference between an IRS Revenue Agent and an IRS auditor?

“IRS auditor” is a colloquial term that taxpayers use to describe anyone at the IRS conducting an examination. Inside the agency, the more precise terms are Tax Compliance Officer (TCO) — who handles less complex office and correspondence audits — and Revenue Agent, who handles more complex field examinations. Revenue Agents are the personnel who handle the substantive cases.

How long does an IRS Revenue Agent audit take?

Audit length varies dramatically depending on complexity. A focused single-issue examination may close in a few months. A complex partnership or high-net-worth examination, particularly one conducted through the Global High Wealth Group, can take a year or more. Length is also affected by responsiveness, the number of specialists involved, and whether the case is escalated to Appeals.

Do IRS Revenue Agents have authority to assess penalties?

Yes. Revenue Agents can propose accuracy-related penalties, late-filing and late-payment penalties, and in appropriate cases, civil fraud penalties. Penalty assessments generally require supervisory approval and are subject to challenge through Appeals and the courts. Penalty defense is a meaningful component of any sophisticated audit defense.

Can I refuse to meet with an IRS Revenue Agent?

You can decline to be personally interviewed and have your representative communicate with the agent on your behalf in most circumstances. There is rarely a strategic reason for an unrepresented taxpayer to sit for an unprepared interview with a Revenue Agent. The right approach is to retain a tax controversy attorney before any interview takes place.

What happens if I disagree with the Revenue Agent’s findings?

If the examination ends in proposed adjustments you disagree with, you can request a conference with the agent’s manager, file a formal protest with the IRS Independent Office of Appeals, and ultimately litigate the deficiency in U.S. Tax Court (after a statutory notice of deficiency) or in U.S. District Court or the Court of Federal Claims (after paying the deficiency and filing a refund claim). The path that fits your situation depends on the specific facts.

Speak With Kugelman Law

If a Revenue Agent has opened an examination of your return — or you have reason to believe one is coming — schedule a paid privileged consultation with Kugelman Law. Call (415) 968-1780 or visit our contact page. All consultations are fully protected by attorney-client privilege.

A $1 million inheritance from a foreign parent that goes unreported can result in a $250,000 IRS penalty, assessed automatically by the system, with the burden squarely on the taxpayer to prove reasonable cause.

At Kugelman Law, we routinely handle Form 3520 penalty matters — including initial examinations, penalty assessments, Appeals conferences, abatement submissions, and post-Farhy litigation strategy. This guide explains when Form 3520 is required, how the penalty works, what has changed after the Farhy v. Commissioner litigation, and how to approach abatement effectively.

What Is Form 3520?

Form 3520 is the Annual Return to Report Transactions with Foreign Trusts and Receipt of Certain Foreign Gifts. It is informational — it does not compute tax — but it is required in several distinct circumstances:

• Receipt of more than $100,000 during the year in gifts or bequests from a nonresident alien individual or foreign estate (with aggregation rules for related donors)
• Receipt of gifts or distributions from foreign corporations or foreign partnerships exceeding the annually adjusted threshold (approximately $19,000 as recently indexed)
• Creation of, or transfers to, a foreign trust by a U.S. person
• Receipt of distributions from a foreign trust
• Ownership of a foreign trust under the grantor trust rules

Form 3520 is due on the same date as your individual income tax return — generally April 15, with available extensions to October 15. The form is filed separately from your Form 1040, mailed to a specific IRS address in Ogden, Utah, which means simple mail-handling errors can become penalty events.

How the Form 3520 Penalty Works

The IRS imposes Form 3520 penalties under IRC § 6039F for foreign gifts and § 6677 for foreign trust matters. The penalty structure differs depending on the violation:

Foreign Gifts and Bequests (IRC § 6039F)

For unreported foreign gifts and bequests, the penalty is 5% of the unreported amount per month that the failure continues, up to a maximum of 25%. For a $1 million inheritance received in 2023 and never reported, the maximum penalty exposure is $250,000.

Foreign Trust Transactions (IRC § 6677)

For failures related to foreign trust transfers, ownership, or distributions, the penalty is the greater of $10,000 or 35% of the gross reportable amount. This penalty can exceed the gift penalty in absolute dollars, and it applies to the U.S. person’s interactions with the trust — including distributions received.

Why the Penalty Is Assessed Automatically

Unlike income tax assessments, Form 3520 penalties are treated by the IRS as “assessable penalties” — meaning the IRS historically took the position that they could be assessed immediately without the pre-assessment deficiency procedures that apply to income tax. When a late-filed or delinquent Form 3520 is processed in Ogden, the penalty is often computer-generated and issued before any human examiner reviews the underlying facts. Taxpayers routinely receive CP15 notices assessing six-figure penalties on transfers that are clearly innocent — a foreign parent gifting cash for a down payment, a foreign grandparent leaving an inheritance, a foreign sibling sending wedding money.

Farhy v. Commissioner and the IRS Assessment-Authority Controversy

In 2023, the U.S. Tax Court in Farhy v. Commissioner, 160 T.C. No. 6, held that the IRS lacked statutory authority to assess penalties under IRC § 6038 for failure to file Form 5471 (a related but distinct foreign information return). The decision cast doubt on the IRS’s assessment authority for a category of international information return penalties that had long been treated as automatic.

In 2024, the D.C. Circuit reversed the Tax Court in Farhy v. Commissioner, 100 F.4th 223 (D.C. Cir. 2024), holding that § 6038 penalties are assessable. The reversal re-established the IRS’s ability to assess these penalties administratively, and the government has taken the position that it applies equally to other international information return penalties. However, the broader legal questions raised during the Farhy litigation — including parallel arguments about § 6039F and § 6677 assessment authority — remain a live issue in other circuits and in ongoing refund litigation.

Practically, this means Form 3520 penalty matters today require careful positioning. Administrative abatement remains the primary path for most clients, but preserving refund claims and litigation options after payment is increasingly important for large penalty assessments. Our firm monitors this area closely and adjusts client strategy as the case law develops.

Reasonable Cause: The Primary Defense

The IRS will abate a Form 3520 penalty where the taxpayer demonstrates reasonable cause for the failure and that the failure was not due to willful neglect. Reasonable cause is a facts-and-circumstances test. In our experience, the most frequently successful reasonable cause arguments involve:

• Reliance on a qualified tax professional who failed to advise of the filing requirement
• Good-faith misunderstanding about whether the transfer qualified as a reportable gift (for example, transfers from a foreign corporation the taxpayer believed was a personal bank account)
• Incapacity, illness, or death in the family affecting the taxpayer’s ability to file
• Ambiguity in the rules themselves — particularly for transfers involving foreign trusts, closely-held foreign entities, or civil-law jurisdictions where the U.S. “trust” concept does not translate cleanly
• First-time filer issues where the taxpayer had no prior knowledge of the U.S. filing system

What reasonable cause is not: “I didn’t know.” Standing alone, lack of knowledge is almost never sufficient. Effective submissions build a factual record supported by declarations, correspondence with advisors, medical records where relevant, and a narrative explaining why the failure was reasonable under the circumstances.

Delinquent Information Return Submission

For taxpayers whose noncompliance has not yet been discovered by the IRS, the Delinquent International Information Return Submission Procedures allow late-filed Forms 3520 to be submitted with a reasonable-cause statement, potentially avoiding penalties entirely. This path is available where the taxpayer has not failed to report associated taxable income — which is the usual posture for foreign gift cases, since the gifts themselves are not taxable.

When Form 3520 Ties to Broader Offshore Issues

Form 3520 rarely sits alone. Taxpayers who receive foreign gifts often also have unreported foreign financial accounts (triggering FBAR and Form 8938 obligations), unreported interests in foreign corporations (Form 5471), unreported passive foreign investment companies (Form 8621), or foreign trust reporting obligations on subsequent years. A proper engagement begins with a full offshore compliance audit so that the Form 3520 issue is not resolved in isolation while other, potentially larger, penalties remain outstanding.

Where broader foreign compliance issues exist, our firm evaluates the full range of voluntary disclosure options — including Streamlined Offshore Procedures, Delinquent FBAR Procedures, and Delinquent Foreign Information Procedures — to design a resolution that addresses every open issue with appropriate penalty protection.

What to Do If You’ve Already Received a Form 3520 Penalty Notice

If you have received a CP15 or similar notice assessing a Form 3520 penalty, several deadlines begin running immediately:

• You have 30 days from the notice to request abatement administratively
• You have 60 days to protest to IRS Appeals after denial of abatement
• After assessment and collection action, you may have rights to Collection Due Process, refund claims after payment, and, in some cases, refund litigation

Do not pay the penalty in full before evaluating your options. Paying first does not waive abatement rights, but it changes the procedural posture of the case in ways that affect strategy. Conversely, do not ignore the notice — collection action on a $250,000 penalty follows quickly if no response is submitted.

How Kugelman Law Handles Form 3520 Penalty Matters

Our process begins with a paid, privileged consultation with Alex Kugelman. We review the penalty notice, the underlying transfer, the Form 3520 as filed (if any), and the client’s broader offshore compliance posture. We develop a reasonable-cause submission, handle all Appeals conferences, and — where abatement is denied or the exposure warrants it — coordinate refund claims and post-payment litigation strategy.

Our firm has handled Form 3520 matters where six-figure penalties were fully abated on reasonable cause grounds, and we have also coordinated broader offshore disclosures that addressed Form 3520 issues alongside FBAR, Form 5471, and Form 8938 exposure. Results depend on specific facts. Past results do not guarantee future outcomes.

Speak with a Foreign Gift Reporting Attorney

Kugelman Law offers paid, privileged consultations with founder Alex Kugelman — fully protected by attorney-client privilege. We do not offer free consultations. We provide boutique, white-glove representation in Form 3520, FBAR, and offshore information return matters.

Call (415) 968-1780 or schedule your consultation here. Representation provided throughout California and nationwide.

Frequently Asked Questions About Form 3520 Penalties

Is a foreign gift taxable?

Generally no. The IRS does not tax the recipient of a gift from a foreign person — but the reporting obligation on Form 3520 is separate from taxability, and failure to report triggers the penalty even though the underlying gift is tax-free.

What is the threshold for reporting a foreign gift on Form 3520?

For gifts from a nonresident alien individual or foreign estate, the threshold is more than $100,000 in aggregate during the year. For gifts from foreign corporations or partnerships, the threshold is considerably lower and is indexed annually.

What is the maximum Form 3520 penalty?

For unreported foreign gifts under IRC § 6039F, the maximum is 25% of the unreported amount. For foreign trust matters under IRC § 6677, the penalty can reach 35% of the gross reportable amount.

Can the IRS really impose a $250,000 penalty on a $1 million inheritance?

Yes — and it does, routinely. The penalty is automated in many cases and is assessed before any examiner reviews the underlying facts. Reasonable cause abatement is the primary defense.

Does Farhy v. Commissioner eliminate Form 3520 penalties?

No. The D.C. Circuit reversed the Tax Court in Farhy in 2024, restoring IRS assessment authority for § 6038 penalties. The broader assessment-authority arguments remain live in other contexts and circuits, but Farhy alone does not eliminate Form 3520 liability or provide automatic abatement.

How do I request abatement of a Form 3520 penalty?

By submitting a written reasonable-cause statement to the IRS within 30 days of the penalty notice, supported by documentation and, where appropriate, sworn declarations. If abatement is denied, the matter can be protested to IRS Appeals.

What if I also have unreported foreign accounts or other foreign information returns?

The Form 3520 issue should be addressed as part of a broader offshore compliance review. Our firm coordinates Streamlined Offshore Procedures, Delinquent FBAR Procedures, and Delinquent Foreign Information Procedures to resolve multiple foreign reporting issues in a single integrated strategy.

Does Kugelman Law offer free consultations for Form 3520 matters?

No. We offer paid, privileged consultations with Alex Kugelman that are fully protected by attorney-client privilege — which is particularly important in offshore matters where willfulness and criminal exposure are sometimes at issue.

About the Author: Alex Kugelman

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique tax controversy and cryptocurrency tax firm serving clients throughout California and nationwide. Admitted to the California Bar in 2008 (No. 255463) and the U.S. Supreme Court, Alex has nearly two decades of federal tax controversy experience, including litigation in U.S. Tax Court and U.S. District Court. He served as San Francisco Chair of the Federal Bar Association’s Tax Division in 2018 and is a member of the Marin County Assessment Appeals Board. He is a nationally recognized cryptocurrency tax authority, featured on the Bitcoin.tax podcast and The Mark Milton Show. J.D., Chapman University Fowler School of Law (2007); B.A., University of Colorado at Boulder (2001). Read Alex’s full bio.

You have a narrow window to respond, and the choices you make in the first thirty days often determine whether you pay the proposed amount, negotiate it down, or escalate the matter into a full audit or U.S. Tax Court petition.

At Kugelman Law, we handle CP2000 notices nearly every week — for wage earners, business owners, crypto investors, and high-net-worth individuals throughout California and nationwide. This guide explains exactly what the notice means, what the deadlines are, how to craft an effective response, and when bringing in a tax attorney is the right move.

What Is an IRS CP2000 Notice?

A CP2000 is a proposed adjustment — not a bill, and not technically an audit. The IRS Automated Underreporter (AUR) unit uses computer matching to compare the information on your Form 1040 against Forms W-2, 1099-NEC, 1099-DIV, 1099-B, 1099-K, 1099-DA, 1098, K-1, and similar information returns filed by banks, brokers, employers, and crypto exchanges. When the computer detects a mismatch, it generates a CP2000 proposing additional tax, interest, and often a 20% accuracy-related penalty.

The notice will contain several critical components: a summary of the proposed changes, a detailed explanation showing which line items triggered the adjustment, a response form, and a response deadline. Miss that deadline and the IRS will typically issue a Statutory Notice of Deficiency — your ticket to Tax Court, but also the point at which your administrative options narrow dramatically.

Common Triggers for a CP2000 Notice

The CP2000 is generated automatically, which means the underlying mismatch is sometimes the IRS’s fault, sometimes the taxpayer’s, and sometimes a reporting error by a third party. Frequent triggers include unreported brokerage 1099-B sales, missing 1099-NEC contractor income, retirement distributions reported as fully taxable when a portion was rolled over, unreported cryptocurrency transactions from exchanges like Coinbase or Kraken, mismatched W-2 wages following a mid-year job change, 1099-K reporting from payment processors that double-counts income, and K-1 flow-through income that was omitted or misreported.

Your IRS CP2000 Notice Response Deadline: 30 Days, Not 90

The single most important date on the notice is the response deadline — generally 30 days from the date printed on the CP2000 (60 days if you are outside the United States). This is not the same as the 90-day deadline on a Statutory Notice of Deficiency, and confusing the two is a costly mistake.

If you respond within 30 days, the IRS will consider your explanation and supporting documents administratively. If you ignore the notice or respond too late, the IRS will typically issue a follow-up CP3219A — the Statutory Notice of Deficiency — which gives you exactly 90 days to petition U.S. Tax Court or the proposed assessment becomes final and collectible. That 90-day deadline cannot be extended. Ever. For anyone.

What Happens If You Miss Both Deadlines

If both windows close, the tax is assessed, the penalties stack, interest continues to accrue, and the account moves to IRS Collections. At that point the dispute is no longer about whether you owe the money — it is about how the IRS will collect it. You can still request audit reconsideration, file a refund claim after paying, or pursue Collection Due Process rights, but your leverage drops substantially. This is why a prompt IRS audit response matters from day one.

How to Respond to an IRS CP2000 Notice

There are three response paths, and choosing the right one depends on the facts.

1. You Agree with the Proposed Changes

If the IRS is correct and you simply missed reporting the income, sign the response form, return it, and arrange payment. If you cannot pay in full, you can request an installment agreement, submit an Offer in Compromise, or be placed in Currently Not Collectible status — options our firm handles through our tax collections practice.

2. You Partially Agree

This is the most common scenario. The IRS may be right about the unreported 1099 but wrong about the cost basis, or right about the income but wrong about the penalty. You sign the response indicating partial agreement and attach a detailed explanation with supporting documents — cost basis records, corrected 1099s, brokerage confirmations, wallet transaction histories, reasonable-cause penalty abatement arguments, or anything else that supports a different number.

3. You Disagree Entirely

Full disagreement requires a written response addressing every proposed change point by point, supported by documentation. This is the path where a tax attorney adds the most value — the response effectively becomes your opening brief, and poorly drafted explanations can undermine your case if the matter later escalates to Appeals or Tax Court.

CP2000 Notices and Cryptocurrency: A Growing Enforcement Area

Since the IRS began receiving 1099-B, 1099-MISC, and now 1099-DA reporting from major U.S. cryptocurrency exchanges, CP2000 notices for unreported crypto income have surged. The AUR unit sees the gross proceeds reported by Coinbase, Kraken, Gemini, or Robinhood but typically has no visibility into the taxpayer’s cost basis — so the proposed adjustment often assumes a zero basis, which dramatically overstates the true tax owed.

These cases are technical. They require reconstructing transaction history across multiple exchanges and wallets, applying the correct accounting method (FIFO, HIFO, or specific identification), and presenting the reconciliation in a form the IRS examiner can verify. Our firm handles this work through our cryptocurrency accounting and audits practice, and we regularly reduce proposed crypto CP2000 assessments by 70% or more once proper basis documentation is supplied. Results depend on specific facts. Past results do not guarantee future outcomes.

The Accuracy-Related Penalty: 20% You May Not Owe

Most CP2000 notices include a 20% accuracy-related penalty under IRC § 6662. That penalty is not automatic and can be challenged under the reasonable cause and good faith standard of IRC § 6664(c). If you relied on a professional, if the reporting error was not yours, if the issue involved genuinely unsettled law (as crypto tax treatment often does), or if the underreported amount falls below the substantial-understatement threshold, the penalty may be abated entirely. Penalty abatement is one of the highest-value moves in a CP2000 response, and it is routinely overlooked by taxpayers responding on their own.

When to Hire a Tax Attorney for a CP2000 Notice

Not every CP2000 requires counsel. A straightforward missing 1099-INT for $400 in bank interest can usually be handled with a signed response form and a check. But the calculus shifts quickly. Consider engaging an attorney when:

• The proposed tax, penalties, and interest exceed $10,000
• The notice involves cryptocurrency, foreign accounts, or pass-through entities
• You also have unfiled tax returns for other years
• You disagree with the IRS’s position and need to build a documented record
• The notice references fraud, civil fraud penalties, or criminal referral language
• You received a CP3219A Statutory Notice of Deficiency and are considering a U.S. Tax Court petition
• You are a California resident facing a parallel FTB notice generated from the same federal adjustment

An attorney-drafted response is protected by attorney-client privilege, which matters enormously when the facts are complicated or the exposure is significant.

How Kugelman Law Handles CP2000 Notices

Our process starts with a paid, privileged consultation with founder Alex Kugelman. We review the notice, the underlying tax return, and the third-party information returns the IRS relied on. We identify every factual and legal defense — basis reconstruction, reasonable cause, statute of limitations, missing income the IRS actually owes a refund on, and procedural defects in the notice itself. We draft the response, manage all IRS correspondence, and escalate to Appeals or Tax Court when the facts warrant it.

The firm has resolved matters ranging from modest brokerage mismatches to seven-figure crypto cases. In one representative result, a client facing a $365,000 CP2000-derived assessment walked away with a zero-dollar liability after a full reconstruction of cost basis and a reasonable-cause penalty argument. Results depend on specific facts. Past results do not guarantee future outcomes.

Speak with a Tax Attorney About Your CP2000 Notice

Kugelman Law offers paid, privileged consultations with founder Alex Kugelman — fully protected by attorney-client privilege. We do not offer free consultations, and we are not a tax resolution mill. We are a boutique firm representing taxpayers in serious controversies with the IRS and FTB.

Call (415) 968-1780 or schedule your consultation here. We represent clients throughout California and nationwide.

Frequently Asked Questions About IRS CP2000 Notices

Is a CP2000 notice an audit?

Technically no. A CP2000 is a proposed adjustment generated by the IRS Automated Underreporter unit through document matching. It is not a field audit or office audit. However, if you disagree and the case escalates, it can evolve into a full examination — and the tax and penalty consequences of losing are identical to an audit.

How long do I have to respond to a CP2000 notice?

You generally have 30 days from the date on the notice (60 days if you are outside the United States). If the IRS issues a follow-up Statutory Notice of Deficiency (CP3219A), you have 90 days to petition Tax Court — and that deadline is absolute.

What happens if I ignore a CP2000 notice?

The IRS will typically issue a Statutory Notice of Deficiency, and if you miss that 90-day Tax Court window, the proposed tax becomes assessed. The account moves to Collections, and your administrative options narrow. Interest and penalties continue to accrue the entire time.

Can the IRS be wrong on a CP2000?

Yes — frequently. The AUR system flags mismatches mechanically and often lacks cost basis information, records rollovers as taxable distributions, double-counts 1099-K income that was already reported on Schedule C, or misapplies exchange-reported crypto proceeds. A well-documented response routinely reduces or eliminates the proposed tax.

Will responding to a CP2000 trigger a full audit?

Responding in good faith with documentation rarely triggers a broader audit. What can trigger one is a response that opens up new issues, admits unreported income from other years, or contains inconsistencies with prior-year returns. This is another reason to have counsel review your response before it is submitted.

Can I set up a payment plan if I agree with the CP2000?

Yes. You can request an installment agreement, submit an Offer in Compromise if you qualify, or request Currently Not Collectible status. If the balance is collectible, our tax collections practice handles these negotiations.

Does California send its own version of the CP2000?

Yes. The California Franchise Tax Board issues parallel notices — often Form 4734D or similar — after it receives federal adjustment information. California residents frequently face both federal and state exposure from the same underlying issue, and coordinating both responses matters.

Does Kugelman Law offer free consultations for CP2000 notices?

No. We offer paid, privileged consultations with Alex Kugelman that are fully protected by attorney-client privilege. This is deliberate: free consultations are not privileged, which means anything you say can potentially be discovered. Our paid consultation model protects you from the first conversation forward.

About the Author: Alex Kugelman

Alex Kugelman is the founder and managing attorney of Kugelman Law, a boutique tax controversy and cryptocurrency tax firm serving clients throughout California and nationwide. Admitted to the California Bar in 2008 (No. 255463) and the U.S. Supreme Court, Alex has nearly two decades of federal tax controversy experience, including litigation in U.S. Tax Court and U.S. District Court. He served as San Francisco Chair of the Federal Bar Association’s Tax Division in 2018 and is a member of the Marin County Assessment Appeals Board. He is a nationally recognized cryptocurrency tax authority, featured on the Bitcoin.tax podcast and The Mark Milton Show. J.D., Chapman University Fowler School of Law (2007); B.A., University of Colorado at Boulder (2001). Read Alex’s full bio.

If you received IRS Letter 6174 about cryptocurrency, you are not alone, and the timing is not random. The IRS has restarted and expanded these digital-asset compliance letters, and recipients are reaching out with the same worry: what does this letter actually mean, and do I have to do something? This guide explains Letter 6174, how it differs from the related 6174-A and 6173 letters and a CP2000 notice, why the IRS is sending them again, and the options in front of you. Throughout, the honest bottom line is the same: a letter that requires no response can still be a warning worth taking seriously.

What is IRS Letter 6174?

Letter 6174 is the mildest of the IRS cryptocurrency compliance letters. It is educational in tone. The IRS is telling you that it received information, typically from a cryptocurrency exchange, indicating you hold or transact in digital assets, and it is reminding you of the rules for reporting virtual-currency transactions. The letter does not accuse you of anything and does not demand a reply. In practice, it is best understood as a signal: the IRS knows, and it is inviting voluntary compliance before taking a harder look.

Letter 6174 vs. 6174-A vs. 6173 vs. CP2000

The four notices crypto holders most often confuse sit on a ladder of seriousness. The table below shows where Letter 6174 falls and what separates it from the others.

Does Letter 6174 require a response?

No. Unlike Letter 6173, which generally calls for a response within about 30 days, and unlike a CP2000, which carries a hard deadline, Letter 6174 asks for nothing. You can set it down and do nothing, and you will not have missed a deadline. The real question is not whether a response is required. It is whether your past crypto reporting was correct. If it was, the letter can be filed away. If it was not, the absence of a deadline is a window, not a dismissal, and that window does not stay open forever.

Why is the IRS sending Letter 6174 again?

The IRS sent a large batch of these letters in 2019, then went quiet. They are back, and the reason is data. Cryptocurrency exchange reporting has expanded sharply, the new Form 1099-DA brings digital-asset transactions into routine information reporting, and the IRS has continued to obtain customer records from major exchanges through John Doe summonses and other requests. The agency now has far more third-party information to match against filed returns, and letters like 6174 are how it puts taxpayers on notice that a mismatch may exist. In short, the letters are rising again because the IRS can finally see more of the picture.

What Letter 6174 means for your situation

The right next step depends entirely on your facts. A few common patterns capture most recipients.

You reported your crypto correctly

If you reported your taxable crypto activity accurately in the years at issue, Letter 6174 may genuinely call for no action. It can still be worth a short privileged review to confirm there are no gaps you are not aware of, especially across multiple years or multiple exchanges.

You have unreported crypto from prior years

Many recipients traded on an exchange years ago and never reported it, sometimes because they did not realize a sale was reportable. If that describes you, the letter is a prompt to come into compliance on your terms rather than the government’s. Depending on the facts, that can mean amended returns or a formal voluntary disclosure, and the choice is a legal one that turns on whether the earlier underreporting could be viewed as willful.

You sold at a loss and assumed you did not have to report

A very common and costly misunderstanding is that selling cryptocurrency at an overall loss means there was nothing to report. A sale or exchange of crypto is a reportable disposition whether you gained or lost, and an unreported disposition is exactly the kind of gap that produces a 6174 letter. The good news is that an overall loss often means little or no tax was actually due, so fixing the reporting is frequently less painful than people fear.

You lost crypto to a scam or theft

If you lost cryptocurrency in a phishing scam, a fraudulent platform, or a “pig butchering” scheme, you may have a theft-loss issue layered on top of the letter, and a potential deduction worth real money if it is handled correctly. The federal and California treatment of these losses is technical and fact-specific. See how to claim a crypto theft-loss deduction.

Crypto on foreign exchanges adds a second layer

If your digital assets sat on a non-U.S. exchange or in offshore wallets, a crypto letter can sit on top of separate foreign-reporting duties, including the FBAR and related forms. Those rules carry their own penalties and their own compliance paths, so they need to be addressed together rather than in isolation. Our cryptocurrency accounting and audits practice handles the crypto and foreign-reporting sides as one problem.

What you should not do

Do not ignore the letter if you know your prior reporting was incomplete, and do not rush to amend on your own without understanding whether the conduct could be viewed as willful. A hurried “quiet” amendment can, in the wrong case, create a record the government later uses. The safest first move is a privileged conversation with a tax attorney, because only an attorney can assess your exposure under attorney-client privilege before anything is filed.

How Kugelman Law helps

We advise cryptocurrency holders who receive IRS compliance letters and represent them across the full range of responses, from confirming that no action is needed to amended returns, voluntary disclosure, and audit defense if a matter escalates. Every engagement starts with a privileged assessment of exposure. For matters that reach into IRS examinations, former IRS Revenue Agent Otto Bosch leads the firm’s federal audit-defense work, and you can read how a former agent approaches crypto tax audit defense.

Our results reflect what disciplined advocacy achieves in high-stakes tax disputes. In one federal matter, two IRS Notices of Deficiency proposing more than $557,000 across six years were settled in U.S. Tax Court down to roughly $38,000, and with avoided interest and California exposure the client effectively saved over $1.2 million. Results depend on specific facts. Past results do not guarantee future outcomes.

Talk to a crypto tax attorney about your Letter 6174

If you received IRS Letter 6174 and are not certain your prior crypto reporting was complete, get a privileged assessment before you decide anything. Schedule a paid, privileged consultation with Kugelman Law by calling (415) 968-1780 or visiting our contact page.

Frequently asked questions

Is IRS Letter 6174 an audit?

No. Letter 6174 is an educational compliance letter, not an audit and not a bill. It signals that the IRS has information about your cryptocurrency activity and wants to be sure you reported it correctly. It can, however, be a step on the path toward an examination if a real reporting gap exists and goes unaddressed.

Do I have to respond to Letter 6174?

No response is required. That is what separates it from Letter 6173, which generally requires a response within about 30 days, and from a CP2000, which has a firm deadline. The absence of a required response does not mean the letter is meaningless; it means you have an opportunity to fix any prior-year problem on your own timeline.

What happens if I ignore Letter 6174?

If your reporting was accurate, ignoring it may carry no consequence. If your reporting was not accurate, ignoring it does not make the issue go away. The IRS already has the underlying data, and the matter can escalate to a 6173 letter, a CP2000, or an audit. It is far better to address a known gap while you still control the timing.

Why did I get Letter 6174 if I only sold crypto at a loss?

Because a sale is reportable even when you lose money. The IRS received information that you disposed of cryptocurrency, and if that disposition was not reported, the data does not match your return, regardless of whether the result was a gain or a loss. Correcting the reporting is usually straightforward, and an overall loss often means little or no additional tax.

Should I amend my tax returns after getting Letter 6174?

Possibly, but that is a legal decision, not a bookkeeping one. For genuinely honest mistakes, amended returns may be the right fix. If there is any chance the earlier conduct could be seen as willful, a bare amendment can backfire, and a formal path may fit better. Have the exposure assessed under privilege before you file.

Can the IRS see my Coinbase or other exchange history?

Increasingly, yes. Through expanded exchange reporting, Form 1099-DA, and summonses served on major exchanges, the IRS has obtained large volumes of customer transaction data. Assume the IRS can see more of your history than you expect, and reconstruct your own records accordingly.

About the author

Alex Kugelman is the founder and managing attorney of Kugelman Law and is nationally recognized for cryptocurrency tax. He has spoken on digital-asset tax and IRS enforcement on the Bitcoin.tax podcast and The Mark Milton Show. With nearly two decades of federal tax controversy experience, he is admitted in California and before the U.S. Supreme Court, the U.S. Tax Court, and the U.S. District Court for the Northern and Eastern Districts of California, and served as San Francisco Chair of the Federal Bar Association Tax Division in 2018. For matters that reach into IRS examinations, his colleague Otto Bosch, a former IRS Revenue Agent from the Global High Wealth group, leads the firm’s federal audit-defense work.

This article is attorney advertising and general information, not legal advice. Whether a given letter requires action, and which compliance path fits, are fact-specific legal determinations. Contacting Kugelman Law does not create an attorney-client relationship.

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The recent federal decision in Kwong v. United States may give millions of taxpayers a path to recover IRS penalties and interest assessed during the COVID-19 pandemic. If you, your business, or your trust paid Failure-to-File, Failure-to-Pay, or related interest on a tax obligation due between January 20, 2020 and July 10, 2023, the Kwong decision could entitle you to a refund or abatement of those amounts — but the window to act is closing. For most taxpayers, the deadline to file a refund or protective claim is July 10, 2026.

This article walks through what the Kwong court held, the legal foundation that supports it, who is potentially eligible, what penalties may be in scope, and the practical steps to evaluate whether a claim is worth pursuing. It is written for a sophisticated audience — taxpayers, advisors, and professionals who want to understand the substance, not just the headlines.

What the Kwong v. United States Decision Held

At its core, the Kwong decision concluded that the IRS improperly charged certain penalties and interest during the COVID-19 federally declared disaster period. The court’s reasoning leaned on long-standing rules that suspend or postpone tax deadlines for taxpayers affected by a federally declared disaster — rules that, in the court’s view, should have prevented the IRS from accruing penalties and interest in the way it did during 2020 through 2023.

The practical takeaway is straightforward: penalties and interest tied to tax obligations falling within the disaster window — January 20, 2020 through July 10, 2023 — may have been assessed contrary to law. Taxpayers who paid those amounts can, in many cases, file a claim for refund or abatement.

Two important qualifiers deserve emphasis. First, Kwong is not yet a final word. The government can pursue further appellate review, and the holding could be affirmed, narrowed, or reversed. Second, the decision does not automatically refund anyone’s money. The IRS will not issue checks on its own initiative. Refund and abatement claims must be filed by the taxpayer within the applicable statute of limitations.

The Legal Foundation: IRC § 7508A and Federally Declared Disasters

To understand Kwong, it helps to look at the underlying statute. Internal Revenue Code § 7508A authorizes the Treasury Secretary to postpone tax deadlines and suspend penalty and interest accrual for taxpayers affected by a federally declared disaster. The provision is meant to ensure that taxpayers caught up in floods, hurricanes, wildfires, or other federally recognized emergencies are not penalized for failing to meet deadlines they could not reasonably meet.

The COVID-19 pandemic was declared a federal emergency under the Stafford Act in March 2020 and remained an active federal emergency until May 11, 2023. The federal disaster declaration tied to COVID-19 covered a period running from January 20, 2020 through approximately July 10, 2023, depending on the specific declaration and how the relief period is calculated.

The legal argument that Kwong validates is that this disaster declaration should have triggered statutory relief from penalties and interest for that entire window — and that the IRS’s piecemeal extensions (the May 17 deadline in 2020, certain quarterly safe harbors, and so on) did not satisfy the statute. If that reasoning holds up on appeal, an enormous number of taxpayer accounts assessed Failure-to-File, Failure-to-Pay, and related charges during 2020–2023 are open to challenge.

Who May Be Eligible for a Kwong Refund or Abatement

Eligibility is broad in concept but fact-specific in application. Generally speaking, the following groups should consider whether they have a viable claim:

Individuals

Any individual taxpayer who paid Failure-to-File, Failure-to-Pay, or late-payment interest on a federal tax obligation due between January 20, 2020 and July 10, 2023 may be eligible. This includes high-net-worth individuals, self-employed professionals, and anyone who filed late or paid late during the pandemic period.

Businesses and Entities

Corporations, partnerships, S-corporations, LLCs, trusts, and estates that paid penalties or interest tied to obligations within the disaster window are potentially eligible. This includes employment tax matters and information return penalties in some cases.

Nonprofits

Nonprofit organizations that incurred Form 990 late-filing penalties or related charges during the period may also have viable claims.

Pre-Existing Accruals

Taxpayers whose original return or payment due date preceded January 20, 2020 — but who continued to accrue penalties and interest into the disaster window — may have a partial relief argument for the portion that accrued during the qualifying period. These cases are more nuanced and benefit from careful transcript analysis.

Penalties and Interest That May Be in Scope

The most commonly cited penalties under Kwong theory are:

• Failure-to-File penalty (IRC § 6651(a)(1)) — typically 5% per month of the unpaid tax, capped at 25%.
• Failure-to-Pay penalty (IRC § 6651(a)(2) and (a)(3)) — typically 0.5% per month, with the rate adjusted in certain circumstances.
• Late-payment interest — interest charged on underpayments that ran during the disaster window.
• Estimated tax penalties (IRC § 6654 and § 6655) — for individuals and corporations who underpaid estimated tax during quarters falling within the disaster period.
• Certain information-return penalties — including late-filing penalties tied to information reporting obligations during the period.

Not every penalty assessed during 2020–2023 will qualify, and not every theory will survive appellate review. But the categories above are where the most meaningful refund opportunities sit.

The July 10, 2026 Deadline and Why Protective Claims Matter

For most taxpayers, the statute of limitations to file a refund claim related to Kwong-eligible penalties and interest closes on July 10, 2026. The deadline is grounded in the general rule of IRC § 6511, which limits refund claims to the later of three years from the date the return was filed or two years from the date the tax was paid.

This is where protective claims become critical. A protective claim is a refund claim filed before the statute of limitations runs, while the underlying legal question is still being resolved by the courts. Its purpose is to preserve the taxpayer’s right to a refund in case the law ultimately develops in their favor — even if the IRS does not yet recognize the claim as valid.

Two truths exist in tension here. First, the Kwong decision could be reversed on appeal, in which case a refund claim may not succeed on the merits. Second, if the decision is affirmed (or expanded by another circuit) and a taxpayer has not preserved their claim by the statute of limitations, no refund will be available regardless of how the law develops. Filing a protective claim addresses both risks: it costs the taxpayer the time and fees to prepare the filing, but it preserves the option to recover.

For taxpayers with significant penalty exposure during 2020–2023, the math usually favors filing. For taxpayers with minimal exposure, the cost of preparation may exceed the potential recovery.

How a Refund or Abatement Claim Actually Works

Filing a Kwong-based claim is not a one-page form. The work involved is meaningful, and understanding the steps helps taxpayers evaluate whether the project is worth the engagement.

Step 1 — IRS Account Transcript Audit

The first step is pulling and analyzing IRS account transcripts for each tax year and entity in scope. The transcripts identify which penalties were assessed, when they were assessed, when they were paid, and how much remains. Without this granular review, it is impossible to determine which penalty assessments fall within the qualifying window. This work overlaps significantly with the kind of transcript and audit analysis we routinely perform in IRS audit defense.

Step 2 — Eligibility and Quantification

Once the transcripts are in hand, the next step is identifying which assessments are Kwong-eligible, separating qualifying penalties from non-qualifying ones, and quantifying the potential refund. This is also where partial-relief arguments are evaluated for accruals that straddle the disaster window.

Step 3 — Form 843 (or Amended Return) Preparation

The actual claim is typically filed on Form 843 (Claim for Refund and Request for Abatement), with separate filings for each tax period and penalty type. The claim must articulate the legal basis — the federally declared disaster, the relevant statute, the Kwong rationale — and request the specific relief sought.

Step 4 — IRS Response and Follow-Up

The IRS may grant the claim, deny it, or hold it in abeyance pending appellate developments in Kwong. If denied, the taxpayer typically has two years to file suit in federal district court or the U.S. Court of Federal Claims. For taxpayers already in collections, parallel issues may need to be addressed through our tax collections practice.

What Happens If the IRS Appeals or the Decision Is Reversed

It is realistic to assume that the government will pursue further review of Kwong. If a higher court reverses, claims that have already been filed may be denied on the merits — but they will have preserved the procedural right to recover if the issue is later resurrected through different litigation or legislative action.

If the decision is affirmed or extended, the IRS may issue formal guidance, set up a streamlined claim process, or quietly grant pending claims. Taxpayers who filed early are typically better positioned to recover quickly under any of these scenarios. Taxpayers who waited may find themselves in the back of the queue or out of time entirely.

What Kugelman Law Recommends

Our approach reflects the realities of the matter. Kwong-based claims are real opportunities, but they are not free money — and the work required to file them properly is non-trivial. We are not automatically reviewing prior client files for Kwong eligibility, and pursuing a claim sits outside the scope of any existing engagement.

If you paid combined penalties and interest of approximately $10,000 or more during 2020–2023, we generally recommend commissioning a transcript audit before the July 10, 2026 deadline. Smaller exposures may not justify the engagement cost; larger or more complex matters — multi-entity portfolios, partnership filings, employment tax issues, late-filed returns from the period — usually warrant a full review. For taxpayers who have not yet filed for those years at all, the analysis ties directly into our unfiled tax returns work, since refund timing depends on when returns were filed.

We have nearly two decades of federal tax controversy experience, including U.S. Tax Court and U.S. District Court litigation, and we routinely handle high-stakes IRS and FTB matters for clients in San Francisco, Marin County, throughout California, and nationwide. If Kwong-related litigation becomes necessary down the line, our U.S. Tax Court litigation practice is positioned to handle it.

Past results illustrate the firm’s experience and do not predict outcomes in any particular matter. Kugelman Law has resolved a $365,000 tax debt to a zero-dollar liability for a client; resolved a multi-year audit and non-filing matter with minimal payment; and resolved ten years of unfiled returns with a successful outcome. Results depend on specific facts. Past results do not guarantee future outcomes.

How to Schedule a Paid, Privileged Consultation

Kugelman Law does not offer free consultations. We offer paid, privileged consultations with founder and managing attorney Alex Kugelman that are fully protected by attorney-client privilege from the first minute of the call. That structure exists for a reason: when you are discussing potentially sensitive tax history with counsel, you should not be doing it in a free intake call where privilege is uncertain.

To discuss whether a Kwong-based refund claim is appropriate for your situation:

Phone: (415) 968-1780
Schedule: https://www.kugelmanlaw.com/contact-us/
General tax help: Kugelman Law Tax Help

Frequently Asked Questions

Is the Kwong v. United States decision final?

No. The decision is subject to appeal, and the government may seek further review. A higher court could affirm, narrow, or reverse the holding. This is a primary reason we recommend filing protective claims now rather than waiting for finality.

What is the deadline to file a Kwong-based refund claim?

For most taxpayers, the deadline is July 10, 2026, calculated from the end of the COVID-19 federal disaster declaration period. The deadline can vary based on when the underlying return was filed and when the tax or penalty was paid. The general rule of IRC § 6511 — three years from filing or two years from payment, whichever is later — controls.

Do I qualify if my original return was due before January 20, 2020?

You may qualify for partial relief covering penalties and interest that accrued during the disaster window, even if the original due date predates January 20, 2020. These cases require careful analysis of when each penalty assessment was actually made on the IRS account.

What types of penalties does the Kwong decision cover?

The most commonly affected categories are Failure-to-File penalties under IRC § 6651(a)(1), Failure-to-Pay penalties under IRC § 6651(a)(2) and (a)(3), late-payment interest, estimated tax penalties under IRC § 6654 and § 6655, and certain information-return penalties tied to obligations falling within the disaster window.

What is a protective refund claim?

A protective claim is a refund claim filed before the statute of limitations expires, while the underlying legal question is still being decided. It preserves the taxpayer’s right to a refund in case the law develops favorably. Filing a protective claim does not guarantee a refund — it simply preserves the option to receive one.

How much in penalties should I have paid before pursuing a claim?

As a general rule, taxpayers who paid combined penalties and interest of approximately $10,000 or more during the 2020–2023 period should consider engaging counsel for a transcript audit. Smaller exposures may not justify the engagement cost, though every situation is fact-specific.

Will the IRS notify me if I am eligible for a Kwong refund?

No. The IRS does not currently have a process to identify and refund eligible taxpayers automatically. Recovery requires a properly prepared and timely filed refund or abatement claim by the taxpayer.

Can Kugelman Law review my prior tax filings for Kwong eligibility?

Yes, but this work requires a separate engagement. A formal transcript audit and claim preparation is time-intensive and is not part of any existing scope of representation. Please contact our office to schedule a paid privileged consultation to discuss whether a formal engagement is appropriate.

What happens if the Kwong decision is reversed on appeal?

If the decision is reversed, refund claims based exclusively on the Kwong rationale would likely be denied on the merits. However, having filed a timely protective claim still preserves procedural rights if the underlying legal issue is later revisited through different litigation or legislative action.

Does Kugelman Law represent clients outside California for Kwong claims?

Yes. While our offices are in San Rafael, downtown San Francisco, and Irvine, we represent clients throughout California and nationwide on federal tax matters. All representation is provided remotely, and federal refund claims and IRS controversies are within the scope of our nationwide practice.

About the Author

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Tax law is complex and fact-specific. Reading this article does not create an attorney-client relationship with Kugelman Law. Results depend on specific facts. Past results do not guarantee future outcomes. To discuss your situation in a privileged setting, please schedule a paid consultation with Alex Kugelman at kugelmanlaw.com/contact-us or call (415) 968-1780.

Most taxpayers who receive an IRS audit notice make the same first call: their CPA. A few call a tax attorney. Almost none think to ask a more useful question — does the firm I’m hiring have anyone on the team who has actually sat on the other side of the audit table?

A former IRS revenue agent attorney is one of the rarest and most strategically valuable assets a tax controversy firm can put on a client matter. When the IRS examination team across the table is trained, equipped, and incentivized to develop adjustments against you, the single most important advantage you can secure is a defense team that includes someone who was trained inside that same playbook.

At Kugelman Law, that advantage is now part of every audit defense the firm handles, in the form of attorney Otto Bosch — a former Revenue Agent from the IRS Global High Wealth Group.

This article explains exactly what a Revenue Agent does, why an inside-the-IRS perspective changes the outcome of an audit defense, and how clients of Kugelman Law benefit from a team built around that distinction.

What an IRS Revenue Agent Actually Does

“IRS auditor” is a generic term most taxpayers use, but inside the agency, examination roles are highly specialized. A Revenue Agent is the IRS employee assigned to conduct in-depth examinations of tax returns — particularly the complex ones. Revenue Agents are not call-center employees, and they are not the people who issue automated correspondence notices about a missing 1099. They are accountants, often with advanced training and credentials, whose job is to dig into a return, identify issues, and develop adjustments the IRS can defend at every escalation point.

A Revenue Agent’s day-to-day work includes:

• Reviewing returns flagged by the IRS’s Discriminant Function (DIF) scoring system or selected through specific enforcement initiatives
• Issuing Information Document Requests (IDRs) and analyzing what taxpayers and representatives produce in response
• Conducting interviews with taxpayers, representatives, and third parties
• Building case files and workpapers that support each proposed adjustment
• Coordinating with IRS Counsel and supervisory managers on technical and procedural questions
• Issuing Notices of Proposed Adjustment and, ultimately, the formal Revenue Agent’s Report

Inside the IRS, agents are organized by division. The Small Business / Self-Employed (SB/SE) division handles most individual and small-business audits. The Large Business and International (LB&I) division handles corporate, partnership, and high-net-worth examinations. Within LB&I, the Global High Wealth Group is the most specialized of all — the team that audits the country’s wealthiest taxpayers using a coordinated, enterprise-level approach to complex pass-through structures, related-party transactions, and high-value individual portfolios.

That is the team Otto Bosch served on before joining Kugelman Law.

Why a Former IRS Revenue Agent Attorney Changes Audit Defense

There is a meaningful difference between knowing the tax code and knowing how the IRS uses it. Most tax attorneys learn the IRS from the outside — through court opinions, published guidance, and accumulated experience reading agency notices. A former IRS revenue agent attorney learns it from the inside, through formal IRS training, supervised casework, and the institutional knowledge of how examinations are actually run.

That insider perspective shifts audit defense in three concrete ways.

Anticipating What the IRS Will Do Next

A standard audit defense is reactive. The IRS asks; the taxpayer responds. The agent develops the next issue; the attorney scrambles to address it. A defense informed by inside-the-IRS experience is anticipatory. Former Revenue Agents know which issues an examination team is trained to develop, which questions on an early IDR are setting up future adjustments, and which client statements during interviews tend to escalate cases rather than close them. That foresight allows the defense to prepare positions, marshal documentation, and structure responses before the IRS asks — not after.

Reading the IRS’s Internal Risk Calculus

Revenue Agents are not free agents. They work within strict supervisory review processes, technical advice channels, and internal pressure to close cases efficiently. Every decision an agent makes — whether to escalate an issue, whether to push for a fraud penalty, whether to settle or take a position to Appeals — is filtered through that institutional risk calculus. A former Revenue Agent attorney can read those signals. They know when an agent is genuinely committed to a position versus when the agent is fishing for support, when a manager is likely to overrule an aggressive line of inquiry, and when to push for resolution at the examination level versus when to position the case for Appeals or U.S. Tax Court.

Recognizing the Difference Between a Routine Audit and an Eggshell Audit

Some audits are administrative exercises. Others are the early stages of a fraud investigation. The line between them is not always obvious to taxpayers, or even to attorneys without controversy experience — but it is recognizable to a former Revenue Agent. The badges of fraud, the pattern of questioning, the involvement of certain specialists, the timing of certain document requests — these all carry meaning from the inside. Misreading that line is one of the most expensive mistakes a taxpayer can make. Volunteering information to “look cooperative” in what turns out to be an eggshell audit can convert civil exposure into a criminal referral. Insider perspective is what prevents that mistake.

The Specific Advantages an IRS Insider Brings to Your Case

Distilled to a working list, here is what changes when a former IRS revenue agent attorney is part of a client’s defense team:

• Predicting the audit scope. Knowing what an agent’s first IDR will likely contain, and what the second and third will probably address, allows the defense to prepare on the right timeline rather than catching up after the fact.
• Managing IDR responses strategically. IDRs are not innocent paperwork. The information provided in response — and the information not provided — frames every subsequent issue. Insider experience shapes responses that satisfy the request without volunteering exposure.
• Identifying weak IRS positions early. Not every adjustment an agent proposes is a strong adjustment. Knowing which positions are routinely overturned at Appeals, and which positions managers are reluctant to defend, allows the defense to push back where pushing back actually works.
• Avoiding self-inflicted escalation. Many of the worst audit outcomes are caused by missteps the taxpayer or unprepared representative made early — improvised statements during an interview, careless document production, or unnecessary disclosures. A former Revenue Agent recognizes those traps before they spring.
• Speaking the agent’s language. Audits are negotiations as much as they are technical exercises. An attorney who can speak fluently about IRS workpapers, internal review timelines, and statutory procedural requirements from the agent’s own perspective tends to find a more reasonable counterparty on the other side of the table.
• Building a clean record for what comes next. If a case advances to Appeals or to U.S. Tax Court litigation, the record built during the examination is what the case is ultimately decided on. Insider experience shapes that record from day one for what comes after.

Meet Otto Bosch — Kugelman Law’s Former IRS Global High Wealth Agent

The advantages above are not abstract for Kugelman Law clients. They are embodied in the firm’s attorney Otto Bosch, who joined the firm in February 2026 after serving as a Revenue Agent in the IRS Global High Wealth Group within the Large Business and International (LB&I) Division.

The Global High Wealth Group is the IRS’s specialized unit for examining the most complex returns of the wealthiest U.S. taxpayers. Within that group, Otto worked Information Document Requests, Notices of Proposed Adjustment, partnership compliance issues, related-party transactions, hobby loss disputes, and the layered portfolio-level adjustments that define high-net-worth examinations. He led issue meetings with taxpayers and audit teams, served as the intermediary with IRS Counsel, and developed and resolved more than a dozen high-value adjustments using the enterprise audit approach unique to that group.

He also brings experience from KPMG’s Washington National Tax practice — the elite technical group at one of the Big Four — where he advised national and multinational clients on complex partnership and S-corporation transactions. He holds an LL.M. in Taxation with a focus on Partnership Tax, is an IRS Enrolled Agent, and is fluent in Spanish.

For Kugelman Law clients, Otto’s role is to bring that combined background to the defense of every audit, controversy, and high-stakes federal tax matter the firm handles.

When the IRS Insider Advantage Matters Most

Not every tax matter requires a former Revenue Agent. A simple correspondence audit on a missing 1099 generally does not. But the insider advantage becomes decisive in cases where the IRS is investing real examination resources, the technical issues are complex, or the financial stakes are significant. That includes:

• High-net-worth examinations, particularly those conducted under the Global High Wealth enterprise approach
• Partnership and S-corporation audits, where pass-through complexity, related-party transactions, and basis questions create high-leverage positions for either side
• Cryptocurrency tax audits, where the IRS is rapidly building enforcement infrastructure and where insider perspective on how agents are being trained to approach digital assets is invaluable
• Eggshell audits and audits with potential fraud exposure, where misreading the IRS’s posture can transform civil exposure into criminal risk
• Multi-year non-filing matters and offshore disclosure cases, where the order in which issues are surfaced and resolved meaningfully affects the outcome
• Aggressive collections matters, where understanding the IRS’s collections playbook from the inside changes how levies, liens, and resolution alternatives are negotiated

In each of these scenarios, the difference between a competent defense and a strategic defense is often the difference between paying a six-figure assessment and paying nothing.

How Kugelman Law Pairs IRS Insider Experience With Federal Tax Litigation

Otto Bosch’s background is the newest layer of the firm’s audit defense capability — but it sits on top of nearly two decades of federal tax controversy experience under founder Alex Kugelman, who has litigated in U.S. Tax Court and U.S. District Court and built one of the country’s earliest dedicated cryptocurrency tax practices.

That pairing matters. A former IRS Revenue Agent on the team gives clients the insider’s view of how a case is being built. A senior tax controversy litigator gives clients the credible threat of taking the case to court if it cannot be resolved administratively. Most firms can offer one or the other. Few offer both. The result, for Kugelman Law clients, is an audit defense posture that is informed at the examination level by IRS-insider experience and backstopped at every escalation point by federal court litigation capability.

Representative outcomes from the firm’s controversy practice include a $365,000 tax debt reduced to a zero-dollar liability, a multi-year audit and non-filing matter resolved with minimal payment, and ten years of unfiled returns brought into compliance with a successful outcome. Results depend on specific facts. Past results do not guarantee future outcomes.

Frequently Asked Questions

What is a former IRS revenue agent attorney?

A former IRS revenue agent attorney is a licensed lawyer who previously worked as a Revenue Agent for the Internal Revenue Service before entering private practice. Their value lies in combining legal credentials with direct, inside-the-IRS experience conducting examinations — knowledge that informs how they defend audits, controversies, and tax court matters in private practice.

Is hiring a former IRS Revenue Agent legal and ethical?

Yes. Former IRS employees can enter private practice in tax, subject to well-defined post-employment restrictions that prohibit working on specific matters they were personally and substantially involved in while at the agency. Those rules are routinely complied with by former agents in private practice and do not limit their ability to defend the great majority of audits, controversies, and litigation matters.

How is a former IRS Revenue Agent different from a CPA in audit defense?

A CPA can represent taxpayers before the IRS, but does not have the same legal training, attorney-client privilege protection, or litigation authority as an attorney. A former IRS Revenue Agent who is also a licensed attorney combines all three: technical accounting depth, inside-the-IRS examination experience, and full legal authority including privilege and the ability to litigate in U.S. Tax Court and federal district court.

Does Kugelman Law represent clients outside of California?

Yes. Federal tax controversy work — including IRS audits, U.S. Tax Court litigation, and offshore disclosure matters — is handled for clients nationwide. The firm is based in Marin County with offices in San Francisco and Irvine, and all representation is provided remotely.

What does a paid privileged consultation include?

A paid privileged consultation is a confidential, attorney-client privileged conversation with Kugelman Law about the specifics of a tax matter. Unlike free consultations offered by many firms, the paid model allows for substantive legal advice during the consultation itself — including a candid assessment of the matter, the firm’s recommended strategy, and a clear scope of representation if the client decides to engage.

Speak With Kugelman Law

If you are facing an IRS or FTB audit, a tax controversy, or a complex federal tax matter where insider perspective on the IRS would change your defense, schedule a paid privileged consultation with Kugelman Law. Call (415) 968-1780 or visit our contact page. All consultations are fully protected by attorney-client privilege.