Offshore Trust Tax Reporting: Forms 3520, 3520-A, FBAR, and 8938

A properly designed foreign asset protection trust doesn’t change how much tax you pay. It does change how much you report. Missing a filing can trigger penalties that start at $10,000, even when no tax is owed.

Why the trust is tax-neutral

Under Internal Revenue Code § 679, a U.S. person who transfers property to a foreign trust that has (or could have) a U.S. beneficiary is treated as the owner of that trust for income tax purposes. The trust is a grantor trust: its income, gains, and deductions flow through to your personal Form 1040 as if you still owned the assets directly.

There are no tax savings, and there is no additional tax. Anyone marketing an offshore trust as a way to reduce taxes is describing something very different, and very risky.

The core filings

Form 3520: Annual Return to Report Transactions With Foreign Trusts. Filed by the U.S. owner to report transfers to the trust, ownership, and distributions received. Due with your income tax return, including extensions. Penalty: the greater of $10,000 or 35% of the gross reportable amount.

Form 3520-A: Annual Information Return of Foreign Trust With a U.S. Owner. The trust’s own annual return, including a foreign grantor trust owner statement. Due March 15 for calendar-year trusts, earlier than most people expect. If the foreign trustee doesn’t file it, the U.S. owner must file a substitute. Penalty: the greater of $10,000 or 5% of the trust assets treated as owned by you.

FBAR (FinCEN Form 114). Required when the aggregate value of foreign financial accounts in which you have a financial interest or signature authority exceeds $10,000 at any time during the year. Filed electronically with FinCEN, due April 15 with an automatic extension to October 15. Non-willful penalties are assessed per report and adjusted for inflation; willful penalties can reach 50% of the account balance.

Form 8938: Statement of Specified Foreign Financial Assets. Filed with your return when foreign financial assets exceed thresholds that depend on filing status. Penalty: $10,000, plus more for continued failure.

Depending on the structure

• Form 8858 if the trust owns a foreign disregarded entity, such as a single-member Nevis LLC.
• Form 8865 or 5471 if a foreign partnership or corporation is involved.

Keeping it simple

Several of these filings overlap, and while assets remain in U.S. accounts some may not apply at all. The specifics depend on how the structure is designed, which is why reporting should be considered before the trust is drafted, not after.

At Ironvale, the legal structure and the compliance calendar are designed together. Ongoing annual maintenance includes coordinating these filings with your tax preparer, or with us.