Quick answer: Form 5471 is generally required when a U.S. person owns, controls, or holds an officer or director role in a foreign corporation at certain thresholds. Missing it usually triggers a $10,000 penalty per form per year and can keep your whole tax return open to audit.

New rules for 2026 tax years change who must file. Call (415) 968-1780 for a paid, privileged consultation.

Form 5471 is one of the most commonly missed international filings. Founders with a foreign subsidiary, families with a company back home, and investors in foreign startups can all have a filing duty without realizing it.

This guide explains who must file Form 5471, what the form reports, how the 2025 tax law changed the rules for 2026, and what to do if you have missed it.

What is Form 5471?

Form 5471, Information Return of U.S. Persons With Respect to Certain Foreign Corporations, reports a foreign corporation’s ownership, finances, and transactions with related parties. It is filed with your federal income tax return and follows the same due date, including extensions.

The form itself usually does not create tax. It gives the IRS the information it needs to apply the rules that can tax foreign corporate income to U.S. owners.

Who must file Form 5471?

Filing duties are organized into categories. Broadly, you may need to file if you are:

• An officer or director of a foreign corporation when a U.S. person acquires a 10% interest.
• A U.S. person who acquires or disposes of stock that crosses the 10% ownership threshold.
• A person who controls a foreign corporation, generally by owning more than 50% of its vote or value.
• A U.S. shareholder of a controlled foreign corporation (CFC), generally someone who owns at least 10% of the vote or value.
• A shareholder of certain related foreign corporations under special rules.

Ownership includes stock you hold indirectly or are treated as owning through family members and entities. That is where many filers get caught.

What is a controlled foreign corporation?

A foreign corporation is generally a CFC when U.S. shareholders, each owning at least 10%, together own more than 50% of its vote or value. CFC status matters because some of the company’s income can be taxed to its U.S. shareholders each year, even if nothing is distributed.

Two regimes do most of that work:

• Subpart F income, which generally covers passive income such as interest, dividends, and certain related-party sales and services income.
• Net CFC tested income, the new name the 2025 tax law gave to what was called GILTI, which broadly reaches the CFC’s other active income.

Form 5471 schedules track these amounts. Errors on the form often signal errors in the income reported on the return.

2025 tax law changes for 2026 tax years

The One Big Beautiful Bill Act made several changes that apply to foreign corporation tax years beginning after December 31, 2025:

• Downward attribution limited again. The law restored a rule that generally stops stock owned by a foreign person from being treated as owned by a related U.S. person. This may reduce the number of CFCs and Form 5471 filers.
• A new category of foreign-controlled CFCs aimed at certain structures, which can create inclusions even where the usual tests are not met.
• GILTI renamed and revised as net CFC tested income, with changes to how it is calculated.

Earlier years remain under the old rules. If you have missed past filings, those years must be fixed under the law that applied then.

The Form 5471 penalty

The penalty for failing to file a complete and accurate Form 5471 is generally $10,000 per foreign corporation per year. If the failure continues more than 90 days after IRS notice, an additional $10,000 can apply for each 30-day period, up to $50,000 more.

Other consequences can be larger than the penalty itself:

• The statute of limitations stays open for the related tax return until the form is filed, so the IRS may examine years long past.
• Foreign tax credits can be reduced in some cases.
• Substantially incomplete forms can be treated as not filed at all.

Whether the IRS can assess this penalty directly, rather than suing to collect it, has been litigated. The D.C. Circuit held in 2024 that it can, but courts have not all handled the question the same way.

How the IRS looks at Form 5471 in an exam

International examinations are largely run through the IRS’s Large Business & International (LB&I) Division, which also has a campaign focused on Form 5471 compliance. Author Otto Bosch was a Revenue Agent in LB&I’s Global High Wealth group.

Examiners commonly compare the Form 5471 to the rest of the return. They look for:

• Subpart F or tested income that should have been included but was not.
• Related-party payments that do not match between the U.S. and foreign books.
• Missing schedules or financial statements that make the form incomplete.
• Ownership changes during the year that changed the filing category.

Missed Form 5471? Your options

The right path depends on whether only the form is missing or income was also underreported:

• Form missing, income reported: the delinquent international information return procedures with a reasonable cause statement. See delinquent international information returns.
• Income also unreported, non-willful: generally the Streamlined Filing Compliance Procedures.
• Possible willful conduct: the IRS Voluntary Disclosure Practice, with counsel. See streamlined vs. voluntary disclosure.

A foreign corporation may also trigger FBAR filings for its accounts if you have signature authority or a large enough ownership interest. See FBAR vs. Form 8938 for the account side.

Talk to a tax attorney about Form 5471

Our Delinquent Foreign Information Procedures practice handles late Forms 5471 and the penalties that follow. If the IRS has already opened an exam, see our tax audit practice and our offshore and international tax attorney page.

Frequently asked questions

Who has to file Form 5471?

Generally, U.S. persons who are officers, directors, or shareholders of certain foreign corporations at specified ownership levels, including U.S. shareholders of controlled foreign corporations. Ownership includes stock held indirectly or attributed through family and entities.

What is the penalty for not filing Form 5471?

Generally $10,000 per foreign corporation per year, plus up to $50,000 more if the failure continues after IRS notice. The related tax return can also stay open to audit until the form is filed.

Do I need to file Form 5471 if the foreign company made no money?

Often yes. The filing duty depends on ownership and roles, not profit, although some reduced reporting may apply in limited situations.

What changed for Form 5471 in 2026?

For foreign corporation tax years beginning after 2025, the 2025 tax law limited downward attribution again, created a new category of foreign-controlled CFCs, and renamed and revised GILTI as net CFC tested income. Earlier years stay under the old rules.

Can I file a late Form 5471 without a penalty?

Possibly, if you have reasonable cause and the IRS accepts it. Relief is not automatic, so the reasonable cause statement should be prepared carefully.

Is a controlled foreign corporation’s income taxed if it is not distributed?

Some of it can be. U.S. shareholders may have to include Subpart F income and net CFC tested income each year, whether or not the corporation pays a dividend.

About the author

Otto Bosch is a tax controversy attorney at Kugelman Law and a former IRS Revenue Agent from the Global High Wealth group of the IRS Large Business & International (LB&I) Division. He is admitted to practice before the U.S. Tax Court and in Missouri, is an IRS Enrolled Agent, and holds an LL.M. in Taxation.

Otto was quoted in Tax Notes in 2026 on IRS examination training and the LB&I audit campaign targeting deferred legal fee structures. His practice focuses on IRS audit defense, international information returns, high-net-worth examinations, and U.S. Tax Court litigation.

He works alongside founder Alex Kugelman, a former judicial law clerk at the U.S. Tax Court with nearly two decades of federal tax controversy experience.

This article is attorney advertising and general information, not legal advice. Form 5471 obligations depend on ownership facts and the law in effect for each year. Contacting Kugelman Law does not create an attorney-client relationship.