Concept
A trust can be an estate-planning tool, an asset-protection structure, a family governance vehicle or a serious U.S. tax reporting problem. For a U.S. citizen, green card holder or resident alien, foreign trusts and large foreign gifts often create reporting even when no U.S. tax is immediately due.
The two core filings are Form 3520 for certain transactions with foreign trusts and the receipt of certain foreign gifts, and Form 3520-A for a foreign trust that has a U.S. owner. The danger is that families treat a private arrangement as invisible while the U.S. system treats it as an annual information return.
A foreign trust is a reporting question before it is a tax question. Settle two facts on paper first — is the trust foreign or domestic, and is a U.S. person treated as its owner — because almost every Form 3520 and Form 3520-A problem traces back to one of those two answers being assumed rather than tested.
Key parameters of the regime:
| Parameter | Value |
|---|---|
| First question | Whether the trust is foreign or domestic for U.S. tax purposes |
| Analysis criteria | Settlor, trustees, protectors, beneficiaries, powers, distributions, letters of wishes, control of decisions |
| Foreign gifts (Part IV) | Since October 2024 the IRS no longer assesses the penalty automatically; it reviews reasonable cause first |
| Penalty amount | Up to 5% of the unreported gift per month, capped at 25% |
| Transfer tax | Turns on citizenship, domicile, asset situs and spouse status |
| Order of analysis | Trust and transfer-tax analysis should be run together, not in sequence |
Trust status
The first question is whether the trust is foreign or domestic for U.S. tax purposes. A trust can be foreign even when it has U.S. beneficiaries, U.S. assets or U.S. investment managers. The analysis identifies the settlor, trustees, protectors, beneficiaries, powers, distributions, letters of wishes and who can control substantial decisions.
The second question is grantor status. If a U.S. person is treated as the owner of a foreign trust, that owner can have current income reporting and Form 3520-A obligations. If the trust is non-grantor, distributions to U.S. beneficiaries raise separate accumulation and throwback issues.
Gifts and inheritances
A large foreign gift or bequest can be reportable even when it is not income. Form 3520 is commonly missed because families treat an inheritance as a private matter rather than a U.S. information-reporting event. The IRS gifts from foreign person page sets the trigger: a U.S. person reports a gift or bequest from a nonresident alien individual or foreign estate only when the aggregate from that person exceeds US$100,000 in the tax year, and then separately identifies each gift above US$5,000. A separate, lower aggregate threshold applies to gifts from foreign corporations and partnerships, and that one is indexed annually.
A 2024 change matters for anyone filing late: as the IRS instructions for Form 3520 and the Taxpayer Advocate confirm, from October 2024 the IRS stopped automatically assessing the Part IV foreign-gift penalty at filing and now reviews a reasonable-cause statement before assessing. The penalty itself is unchanged — up to 5% of the unreported gift for each month, capped at 25% — so a late filing should still carry a clear reasonable-cause statement.
The proposed rules REG-124850-08, published in the Federal Register on 8 May 2024, also belong in view: they rewrite the regime for transactions with foreign trusts and for reporting large foreign gifts. They are a proposal rather than an enacted rule — as of 14 September 2026 no final version appears in the Federal Register, and until it does they carry no force.
Estate and gift exposure
U.S. estate and gift tax sits next to the income-reporting question and turns on citizenship, domicile, asset situs and spouse status. A non-citizen spouse, foreign real estate, U.S. situs securities and life insurance can each change the planning answer. The trust analysis and the transfer-tax analysis should be run together, not in sequence.
The current figures drive the whole arithmetic. The basic exclusion amount is $15,000,000 per person for 2026, indexed from 2027, with the former end-of-2025 sunset repealed. The annual gift exclusion is $19,000; for a spouse who is not a U.S. citizen a separate $194,000 applies instead. For a nonresident non-citizen settlor the threshold is an order of magnitude lower: Form 706-NA becomes due once US-situs property in the gross estate exceeds $60,000.
Tax on the recipient under section 2801
The What's New section of the December 2025 revision of the Form 3520 instructions carries a single item: new guidance on the section 2801 tax.
The mechanics run backwards from the usual. A covered expatriate who gave up citizenship or a long-term green card pays no gift or estate tax. The U.S. recipient pays, at the highest rate in the section 2001(c) table in effect on the date of receipt — currently 40% — from the first dollar above the same $19,000 annual exclusion. Reporting runs on Form 708, which does not displace Form 3520: Treas. Reg. § 28.2801-6(c)(3) states that filing Form 708 does not relieve the penalties under section 6677(a) or section 6039F(c). The Form 3520 instructions put the same point from the other side — a distribution from a foreign trust attributable to a gift or bequest from a covered expatriate can require Form 708 on top of Part III.
The payer is not necessarily an individual. Domestic trusts and electing foreign trusts — a foreign trust that elects to be treated as domestic solely for chapter 15 purposes — are named alongside. A foreign trust without that election pays nothing itself and shifts the charge to its U.S. distributees through the section 2801 ratio.
Three dates have to be kept apart: the statutory reach starts on 17 June 2008. The definitional and computational rules of TD 10027 apply to receipts on or after 1 January 2025. The rules themselves were published and took effect on 14 January 2025. For receipts in 2008–2024 the rules in force set no filing date, and nothing published closes that gap. The first Form 708 covers calendar year 2025 and is due 15 June 2027. The regime in full is in Section 2801: gifts and bequests from covered expatriates.
Planning uses
Trust planning for U.S. persons is mainly about timing, classification and evidence. Typical legal tools include domestic U.S. trusts where appropriate, pre-immigration trust review, decanting or restructuring before a beneficiary becomes a U.S. person, distribution policies, beneficiary statements, estate-tax modeling and coordination with CFC, PFIC and FATCA reporting.
A foreign trust is not a way to hide assets. FATCA and bank due diligence make the identity of U.S. settlors, beneficiaries and controlling persons central to onboarding and annual review, so the trust file and the tax file have to agree.
Compared with the other destinations a trust family moves to, the United States is the strictest on arrival: relocating-with-a-trust sets the five-year look-back of Treas. Reg. § 1.679-5 beside Canada's deemed-resident rule, Germany's § 15 AStG attribution and the UK's four-year FIG window, and shows what § 877A keeps attached to a trust when a covered expatriate leaves. How the foreign trust's own jurisdiction compares on firewall, creditor tests and reporting is in trust-jurisdictions-map.
What the trust file has to establish
The file starts with the people: settlor, trustees, protector, beneficiaries and anyone holding control powers. On that basis the trust is classified as foreign or domestic for U.S. tax purposes, and grantor or non-grantor status is settled before any distribution is made rather than after it.
The reporting map follows from those answers — Forms 3520, 3520-A, 8938, FBAR, 5471, 8621 and any estate or gift tax forms — and it has to cover the foreign companies, funds and accounts held inside the trust. The trust deed, amendments, letters of wishes, distribution minutes and beneficiary statements are the evidence behind that map and stay with it. Where a beneficiary is about to move to the United States or receive a green card, the U.S. reporting is modelled before the move.
Common mistakes
- Assuming a trust is non-U.S. simply because the family is non-U.S.
- Treating a foreign gift or inheritance as invisible to U.S. reporting.
- Missing Form 3520-A when a U.S. person is treated as owner.
- Holding PFIC funds or CFC shares inside a trust without a U.S. owner and beneficiary map.
- Distributing cash before reconstructing trust accounting and accumulation history.
- Filing a late Form 3520 with no reasonable-cause statement attached.
- Relying only on local private-client advice without U.S. tax review.
Advisor trigger
Use a U.S. tax attorney before creating, funding, changing or distributing from a trust with any U.S. settlor, beneficiary, protector, trustee, account signatory or U.S. asset exposure. For missed filings, coordinate with enforcement and cleanup before sending isolated late forms.
Q/A
When does a foreign gift have to be reported on Form 3520
When a U.S. person receives more than US$100,000 in aggregate during the tax year from a nonresident alien individual or a foreign estate, including persons related to them. Each gift above US$5,000 is then identified separately. A lower indexed threshold applies to gifts from foreign corporations and partnerships.
Is a foreign gift taxable income
Usually not. A genuine gift or bequest is an information-reporting event, not income. The risk is the penalty for failing to report it on Form 3520, not income tax on the gift itself.
What changed with Form 3520 penalties in 2024
From October 2024 the IRS stopped automatically assessing the Part IV foreign-gift penalty at the time of filing and now reviews a reasonable-cause statement before assessing. The penalty amount is unchanged, so a late or corrected filing should still include a clear reasonable-cause statement.
What is the difference between Form 3520 and Form 3520-A
Form 3520 is filed by the U.S. person for transactions with a foreign trust and for large foreign gifts. Form 3520-A is the annual information return of the foreign trust itself where it has a U.S. owner, and the U.S. owner is responsible for making sure it is filed.
Can a trust be foreign even if the family is not American
Yes. A trust is classified by the court and control tests, not by the family passport. A trust with U.S. beneficiaries, U.S. assets or a U.S. person with control powers can pull Form 3520 and Form 3520-A duties into an otherwise non-U.S. structure.