Form 3520 — Annual Return to Report Transactions with Foreign Trusts and Receipt of Certain Foreign Gifts
The complete practitioner guide to Form 3520 — covering foreign trust reporting, foreign gift reporting, the $10,000 penalty for failure to file, and the interaction with FBAR and Form 8938.
Who Must File Form 3520?
Form 3520 must be filed by U.S. persons who: (1) are treated as the owner of a foreign trust under the grantor trust rules (§671–§679); (2) transfer money or property to a foreign trust; (3) receive a distribution from a foreign trust; or (4) receive a gift or bequest from a foreign person exceeding $100,000 in a calendar year (or $17,339 from a foreign corporation or foreign partnership in 2026, indexed for inflation).
Form 3520 is due on the same date as the U.S. person's income tax return (including extensions). For individuals, this is typically April 15 (or October 15 with an extension). Form 3520 is filed separately from the income tax return and is sent to the IRS Service Center in Ogden, Utah.
Foreign Trust Reporting
U.S. persons who are treated as the owner of a foreign trust under the grantor trust rules must report the trust on Form 3520 and must also ensure that the foreign trust files Form 3520-A (Annual Information Return of Foreign Trust with a U.S. Owner). If the foreign trust fails to file Form 3520-A, the U.S. owner is responsible for filing a substitute Form 3520-A.
U.S. persons who transfer property to a foreign trust must report the transfer on Form 3520. The reporting requirement applies to any transfer, including contributions to a foreign trust established by the U.S. person, loans to a foreign trust, and transfers of property to a foreign trust in exchange for an interest in the trust.
| Event | Form 3520 Required? | Penalty for Failure |
|---|---|---|
| U.S. person creates a foreign trust | Yes | $10,000 or 35% of gross reportable amount |
| U.S. person transfers property to foreign trust | Yes | $10,000 or 35% of gross reportable amount |
| U.S. person receives distribution from foreign trust | Yes | 35% of gross reportable amount |
| U.S. person receives foreign gift over $100,000 | Yes | 5% of gift per month (max 25%) |
| Foreign trust fails to file Form 3520-A | U.S. owner must file substitute | $10,000 or 5% of gross reportable amount |
Foreign Gift Reporting
U.S. persons who receive gifts or bequests from foreign persons must report the gifts on Form 3520 if the total gifts from all foreign persons exceed $100,000 in a calendar year. Gifts from foreign corporations or foreign partnerships must be reported if the total gifts exceed $17,339 in 2026 (indexed for inflation). The reporting requirement applies to gifts of cash, property, and other assets.
The failure to report a foreign gift is subject to a penalty of 5% of the gift per month (up to a maximum of 25% of the gift). The penalty is assessed on the unreported gift amount, not on the tax owed. Practitioners should advise clients who receive large gifts from foreign relatives or business associates to report the gifts on Form 3520.
Interaction with FBAR and Form 8938
Form 3520 is one of several international information reporting forms that U.S. persons with foreign financial interests must file. Other forms include: FBAR (FinCEN Form 114) for foreign bank accounts with a balance exceeding $10,000; Form 8938 (FATCA) for foreign financial assets exceeding $50,000 (single) or $100,000 (MFJ); Form 5471 for U.S. shareholders of foreign corporations; and Form 8858 for U.S. persons with interests in foreign disregarded entities.
Practitioners should conduct a comprehensive international information reporting review for clients with foreign financial interests to ensure that all required forms are filed. The penalties for failure to file international information returns are significant and can exceed the tax owed on the underlying income.
Penalty Abatement and Reasonable Cause
The penalties for failure to file Form 3520 can be abated if the taxpayer can demonstrate reasonable cause for the failure. Reasonable cause exists if the taxpayer exercised ordinary business care and prudence in determining their filing obligations but was unable to comply due to circumstances beyond their control. Common reasonable cause arguments for Form 3520 penalties include: (1) the taxpayer was unaware of the filing requirement; (2) the taxpayer relied on the advice of a tax professional who failed to advise them of the filing requirement; and (3) the taxpayer was unable to obtain the necessary information from the foreign trust to complete the form.
Frequently Asked Questions
Form 3520 must be filed by U.S. persons who are treated as the owner of a foreign trust, transfer property to a foreign trust, receive a distribution from a foreign trust, or receive a gift from a foreign person exceeding $100,000 in a calendar year.
The penalty for failure to file Form 3520 is $10,000 or 35% of the gross reportable amount (whichever is greater) for foreign trust transactions. For foreign gifts, the penalty is 5% of the gift per month (up to a maximum of 25% of the gift).
U.S. persons must report gifts from foreign persons on Form 3520 if the total gifts exceed $100,000 in a calendar year. Gifts from foreign corporations or foreign partnerships must be reported if the total gifts exceed $17,339 in 2026 (indexed for inflation).
Form 3520-A is the Annual Information Return of Foreign Trust with a U.S. Owner. It must be filed by the foreign trust itself. If the foreign trust fails to file Form 3520-A, the U.S. owner is responsible for filing a substitute Form 3520-A.
Form 3520 is one of several international information reporting forms. Other forms include FBAR (FinCEN Form 114) for foreign bank accounts, Form 8938 (FATCA) for foreign financial assets, Form 5471 for foreign corporations, and Form 8858 for foreign disregarded entities.
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