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.
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. The lower aggregate threshold for gifts from foreign corporations and partnerships is indexed and lower.
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.
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.
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.
Checklist
- Identify settlor, trustees, protector, beneficiaries and anyone with control powers.
- Classify the trust as foreign or domestic for U.S. tax purposes.
- Determine grantor or non-grantor status before any distribution is made.
- Map Forms 3520, 3520-A, 8938, FBAR, 5471, 8621 and any estate or gift tax forms.
- Keep the trust deed, amendments, letters of wishes, distribution minutes and beneficiary statements.
- Review foreign companies, funds and accounts held inside the trust.
- Model U.S. reporting before a beneficiary moves to the United States or receives a green card.
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.
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