Foreign Non-Grantor Trust Taxation and US Reporting

If you are a US beneficiary of a foreign non-grantor trust, the taxation and US reporting rules work like this: the trust itself pays no US tax on its foreign income, but when that income reaches you it is taxed in full, and if it accumulated inside the trust for years before being paid out, a special throwback regime adds an interest charge that can consume most of the distribution. On top of the tax, you must file Form 3520 to report what you received, usually by your income tax deadline, and the penalty for missing that filing starts at the greater of $10,000 or 35 percent of the distribution.

The rest of this article walks through how distributions are taxed, what else counts as a distribution, which forms you owe the IRS, and what to do if you have already missed a filing.

Confirming the Trust Is a Foreign Non-Grantor Trust

Two classifications have to line up before any of the rules below apply to you.

First, the trust has to be foreign. Under IRC §7701(a)(30)(E), a trust is domestic only if a US court can exercise primary supervision over its administration (the court test) and one or more US persons control all substantial decisions (the control test). Fail either test and the trust is foreign.¹ Substantial decisions include distributions, investment choices, and whether to terminate the trust.

Second, it has to be non-grantor. In a non-grantor trust, the trust is a separate taxpayer rather than a pass-through to the person who funded it. True foreign non-grantor trusts typically arise in two situations: a non-US person sets up the trust for US family members, or a foreign grantor trust converts to non-grantor status when the foreign grantor dies. If a US person transferred the property to the trust, IRC §679 generally forces grantor-trust treatment as long as there is any US beneficiary, so the trust is usually not a non-grantor trust in that scenario.²

How Your Distribution Is Taxed

Current-Year Income

When the trust distributes income it earned in the same year, you include that amount in your own taxable income. The trust’s distributable net income (DNI) sets the ceiling on how much of what you received is taxable; anything above DNI is treated as a tax-free return of principal.

The feature that catches beneficiaries off guard is that a foreign trust’s DNI includes capital gains. The exclusion that normally keeps capital gains out of a domestic trust’s DNI, in IRC §643(a)(6)(C), does not apply to foreign trusts.³ Long-term gains that would have reached a domestic beneficiary at preferential rates come through a foreign non-grantor trust as ordinary income. For a trust holding appreciated investments, that difference alone can add ten or more percentage points to your effective rate.

Accumulation Distributions and the Throwback Rules

Anything paid to you above the current year’s DNI is an accumulation distribution: income the trust earned in prior years and held back instead of distributing. The throwback rules under IRC §667 exist to stop US beneficiaries from using a foreign trust as an indefinite tax deferral vehicle.⁴

The calculation works by throwing the accumulated income back to the years it was earned. The IRS looks at your five preceding tax years, drops the highest-income and lowest-income years, and averages the tax increase the deemed distribution would have caused in the remaining three. That average is multiplied by the number of years over which the income accumulated.

Then an interest charge runs on top of the tax, from the year the income was earned through the year it is actually paid out. On a decade of accumulated income, the combined tax and interest frequently approach the ceiling set by IRC §6677, which caps the total at the gross amount of the accumulation distribution.⁵ Hitting that ceiling is not rare with long accumulation periods.

One consequence worth understanding before any payment is made: if the trust fails to give you a Foreign Non-Grantor Trust Beneficiary Statement with the information needed to break the distribution down between current and accumulated income, you have to treat the entire distribution as an accumulation distribution and apply the throwback rules to the whole amount.⁶ Ask the trustee for the statement before you accept the payment.

Loans and Use of Trust Property Count as Distributions

A quiet trap: if the trust lends you cash or marketable securities, IRC §643(i) treats the loan as a taxable distribution subject to the same rules above. The same applies to loans made to a US grantor or to a US person related to you, and to using trust property without paying fair market value.³

Repaying the loan does not reverse the tax. Once the deemed distribution has been recognized, any later repayment, cancellation, or discharge is disregarded. Borrow $500,000 from the trust and pay it back the next week and the IRS still sees a $500,000 distribution.

What You Have to File

Form 3520

Every US person who receives a distribution from a foreign trust has to file Form 3520, Annual Return to Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts. You report the distribution in Part III and calculate the throwback tax and interest charge there.⁷

The form is due on the 15th day of the fourth month after your tax year ends. For most individuals that means April 15. An extension of your income tax return automatically extends Form 3520 to October 15. If you live and work abroad, you get until the 15th day of the sixth month.⁷

FBAR (FinCEN Form 114)

You may also owe an FBAR if the trust holds foreign financial accounts and your interest in the trust is large enough. The FBAR threshold is $10,000 in aggregate across all foreign accounts at any point during the year.⁸ Under the governing regulation, you have a reportable financial interest in a trust’s foreign accounts if you have a present beneficial interest in more than 50 percent of the trust’s assets or receive more than 50 percent of its current income.⁹ Below those thresholds, the trust’s accounts generally do not pull you into FBAR filing.

Form 8938

Form 8938, Statement of Specified Foreign Financial Assets, is a separate requirement filed with your income tax return. Thresholds depend on where you live and your filing status. Unmarried taxpayers in the United States file when specified foreign financial assets exceed $50,000 on the last day of the tax year or $75,000 at any point during the year. Joint filers in the US file at $100,000 and $150,000. Taxpayers living abroad have higher thresholds: $200,000/$300,000 single and $400,000/$600,000 joint.¹⁰ Form 8938 and the FBAR are separate obligations with different destinations, thresholds, and penalties; filing one does not satisfy the other.

A Note on Form 3520-A

Form 3520-A is the annual information return for a foreign trust with a US owner, which means it applies to foreign grantor trusts.¹¹ A foreign non-grantor trust by definition has no US owner, so you should not be looking at Form 3520-A for your own trust. Watch for it only if you are also connected to a separate foreign grantor trust.

Penalties for Missed or Late Filings

IRC §6677 sets the penalty regime, and the amounts are large:

Failing to report a distribution on Form 3520: the greater of $10,000 or 35 percent of the gross distribution.
Failing to report a transfer to a foreign trust: the greater of $10,000 or 35 percent of the gross value of the property transferred.
Failing to file Form 3520-A (for US owners of foreign grantor trusts): the greater of $10,000 or 5 percent of the gross value of the trust assets treated as owned by the US person.
Continuation penalty: if the failure continues more than 90 days after the IRS mails notice, an additional $10,000 for each 30-day period, or fraction of one, that it stays uncured.

The total penalty for a single failure is capped at the gross reportable amount, so it cannot exceed the value of what you received or transferred.⁵ That is cold comfort when the penalty can still swallow the entire distribution before it stops growing.

These penalties are assessed automatically during processing. A beneficiary who inherits a trust, does not know the filing exists, and misses the deadline receives a penalty notice before anyone at the IRS asks a single question.

Fixing a Missed Filing

Reasonable Cause

The primary defense is reasonable cause. The IRS evaluates these claims individually, looking at whether you acted responsibly before and after the failure, requested extensions where available, tried to prevent the lapse, and corrected it as soon as you discovered it. First-time filers, taxpayers with otherwise clean compliance records, and those who relied on professional advisors who gave wrong guidance tend to have the stronger cases.¹²

You can request abatement by calling the number on your IRS notice or by mailing Form 843, Claim for Refund and Request for Abatement, with supporting documentation. Given the dollar amounts involved, putting it in writing with full documentation is almost always the better route.

Delinquent International Information Return Submission Procedures

If you missed prior-year filings, have not been contacted by the IRS about them, and are not under examination, you can file the late Forms 3520 (and 3520-A if relevant) through normal channels under the delinquent international information return submission procedures. Attach a reasonable cause statement to each late return explaining the delay.¹³

Submitting under these procedures does not guarantee penalty-free treatment. The IRS may assess penalties during processing without initially considering your statement, and you may need to respond to follow-up correspondence and resubmit your explanation. The process works, but it often takes persistence.

Streamlined Filing Compliance Procedures

If the failures were non-willful, the streamlined filing compliance procedures are another path. They are open to individual taxpayers inside and outside the United States who can certify that the failure to report income, pay tax, and file required information returns was due to negligence, inadvertence, mistake, or a good-faith misunderstanding of the law. They are not available if you are already under civil examination or criminal investigation for any tax year.¹⁴

Whichever path you take, the practical priority is the same: get the beneficiary statement from the trustee if you can, file what you owe, and document your reasons in writing. The size of the penalties makes small procedural choices expensive.

1
Office of the Law Revision Counsel. 26 USC 7701 – Definitions
2
Office of the Law Revision Counsel. 26 USC 679 – Foreign Trusts Having One or More United States Beneficiaries
3
Office of the Law Revision Counsel. 26 USC 643 – Definitions Applicable to Subparts A, B, C, and D
4
Office of the Law Revision Counsel. 26 USC 667 – Treatment of Amounts Deemed Distributed by Trust in Preceding Years
5
Office of the Law Revision Counsel. 26 USC 6677 – Failure to File Information With Respect to Certain Foreign Trusts
6
Office of the Law Revision Counsel. 26 USC 6048 – Information With Respect to Certain Foreign Trusts
7
Internal Revenue Service. Instructions for Form 3520 (12/2025)
8
FinCEN.gov. Report Foreign Bank and Financial Accounts
9
eCFR. 31 CFR 1010.350 – Reports of Foreign Financial Accounts
10
Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
11
Internal Revenue Service. Instructions for Form 3520-A (Rev. December 2025)
12
Internal Revenue Service. Penalty Relief for Reasonable Cause
13
Internal Revenue Service. Delinquent International Information Return Submission Procedures
14
Internal Revenue Service. Streamlined Filing Compliance Procedures