Form 3520, "Annual Return to Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts," is one of the most penalty-laden information returns in the US tax system. The form covers two distinct fact patterns: (1) reportable transactions with foreign trusts under IRC §6048 - creation, transfers to, distributions from, and US ownership of foreign trusts; and (2) receipt of large foreign gifts and bequests under IRC §6039F. Form 3520 is an INFORMATION return - it does not create tax liability by itself - but the failure-to-file penalties are draconian: 35% of the gross value of any property transferred to a foreign trust, 35% of the gross value of distributions received from a foreign trust, $10,000 automatic minimum for non-grantor trust failure to file Form 3520-A, and 5% per month (up to 25%) of the gross gift amount for unreported foreign gifts. Reporting thresholds: $100,000 (aggregate) from a nonresident alien individual or foreign estate; $20,116 for 2025 and $20,573 for 2026 (inflation-indexed) from a foreign corporation or foreign partnership; and ANY amount from a foreign trust distribution. Foreign gifts are aggregated across related foreign persons - parents' separate gifts of $60,000 each count as $120,000 from related donors triggering Form 3520. Proposed regulations issued May 2024 would lower the §6039F threshold from $100,000 to an inflation-indexed amount (currently around $20,000) for gifts from nonresident alien individuals or foreign estates; taxpayers may elect to rely on the proposed regs but only if applied in their entirety and consistently. Form 3520 is filed SEPARATELY from Form 1040 - mailed to Ogden, UT - and missing this distinction is the most common practitioner error. Streamlined Filing Compliance Procedures provide relief for non-willful non-filers.
Trigger 1 - Foreign trust creation/transfer (Part I): US person creates a foreign trust, transfers property to a foreign trust, or holds a qualified obligation from a foreign trust.
Trigger 2 - US owner of foreign grantor trust (Part II): US person treated as owner of any portion of a foreign trust under §§671-679 grantor trust rules. Form 3520-A also required (filed by trust; substitute by US owner if trust fails to file).
Trigger 3 - Distribution from foreign trust (Part III): US person receives ANY distribution from a foreign trust - no minimum threshold. Includes loans treated as distributions and uncompensated use of trust property.
Trigger 4 - Foreign gifts/bequests (Part IV): Receipt above thresholds - $100,000 from NRA/foreign estate (aggregate from related); $20,116 (2025) / $20,573 (2026) from foreign corp/partnership.
Filed SEPARATELY from Form 1040 - mailed to IRS Service Center, P.O. Box 409101, Ogden, UT 84409. Due date follows Form 1040; extension via Form 4868 extends Form 3520 too.
| Donor Type | 2025 Threshold | 2026 Threshold |
|---|---|---|
| Nonresident alien individual or foreign estate (aggregate gifts/bequests) | $100,000 | $100,000 (until proposed regs finalized) |
| Foreign corporation or foreign partnership (aggregate purported gifts) | $20,116 | $20,573 (inflation-indexed) |
| Distribution from foreign trust | ANY amount (no threshold) | ANY amount (no threshold) |
| Proposed regulations (May 2024) - if elected | ~$20,116 for ALL foreign donor types (election applies consistently) | ~$20,573 |
| Aggregation rule | Gifts from related foreign persons aggregated - parents, siblings, family members aggregated to determine threshold | |
| Form 3520 Part | Triggering Event | Penalty Base |
|---|---|---|
| Part I - Transfers to a Foreign Trust | US person transfers property to foreign trust; creates trust; holds qualified obligation | 35% of gross value of property transferred under §6677(a) |
| Part II - US Owner of Foreign Trust | US person treated as grantor/owner under §§671-679 | 5% of gross value of trust portion treated as owned at end of year under §6677(b) |
| Part III - Distributions from Foreign Trust | US person receives distribution (cash, property, loan, uncompensated use) | 35% of gross value of distributions received under §6677(a) |
| Part IV - Receipt of Foreign Gifts | Aggregate gifts above threshold from foreign donors | 5% per month, max 25% of gross gift amount under §6039F(c) |
| Penalty Provision | Trigger | Amount |
|---|---|---|
| §6677(a) - Foreign trust transactions | Failure to file Form 3520 for Part I or Part III transactions | Greater of $10,000 OR 35% of (gross value of transferred property; gross value of distributions) |
| §6677(b) - Foreign grantor trust | Failure to file Form 3520 Part II | Greater of $10,000 OR 5% of gross value of US-owned portion at year-end |
| §6677(a)(1) - Foreign trust failure to file Form 3520-A | US owner is responsible if foreign trust does not timely file | $10,000 automatic; mitigated by substitute Form 3520-A attached to US owner's Form 3520 |
| §6677(b) continued failure | After 90 days from IRS notice, additional | $10,000 per 30-day period (or fraction), up to gross reportable amount |
| §6039F(c) - Foreign gift failure | Failure to report gifts above threshold | 5% per month of unreported amount, maximum 25% |
| §6662(j) accuracy-related penalty | Foreign trust asset undisclosed underpayment | 40% of underpayment (doubles normal 20% accuracy penalty) |
| Maximum penalty | Penalties cannot exceed the gross reportable amount | Severe nevertheless - $100K gift unreported = $25K penalty; $500K trust distribution = $175K penalty |
Under §6039F and Notice 97-34, gifts from "related persons" are AGGREGATED to determine whether the threshold is exceeded. This rule is widely misunderstood.
| Aggregation Scenario | Treatment |
|---|---|
| Father gives $60,000; mother gives $60,000 (separate gifts) | Aggregated as $120,000 from related donors - exceeds $100,000 threshold - Form 3520 required |
| Foreign aunt gives $50,000; foreign uncle (her husband) gives $50,000 | Aggregated - exceeds threshold - Form 3520 required |
| Foreign brother gives $50,000; unrelated foreign friend gives $80,000 | NOT aggregated - separate $50K and $80K, neither alone exceeds $100K threshold - no Form 3520 |
| Foreign parent gives 4 separate gifts of $30,000 throughout year | Aggregated to $120,000 from single donor - exceeds threshold - Form 3520 required |
| Gifts from foreign corporation controlled by foreign parent | Aggregated with parent's gifts if IRS treats as related - or recharacterized as deemed dividend |
| Joint gift from parents structured to avoid aggregation | IRS may collapse - aggregation cannot be defeated by separation if related |
| Receipt Type | US Tax Treatment | Form 3520 Required? |
|---|---|---|
| Gift from foreign individual (NRA) | NOT taxable income to recipient under §102 | YES if above threshold |
| Inheritance from foreign estate | NOT taxable income under §102 | YES if above threshold (treated as gift from foreign estate) |
| Distribution from foreign trust to US beneficiary | Partially taxable depending on DNI; throwback rules under §665-668 may apply for accumulated distributions | YES - any amount |
| Distribution from foreign grantor trust (US owner is also recipient) | Treated as gift to extent US owner's deemed-owned portion | YES via Part III; Part II also required |
| "Gift" from foreign corporation | Generally recharacterized as dividend or other income - rarely a true gift under US tax law | YES if above $20,116 (2025) / $20,573 (2026) |
| "Gift" from foreign partnership | Generally recharacterized; partner distributive share treatment | YES if above threshold |
| Gift from covered expatriate under §877A | SUBJECT to §2801 succession tax on recipient (40% on transfer) per January 2025 final regs - SEPARATE FROM Form 3520 obligation | YES (plus Form 708 for §2801 tax) |
| Tuition or medical payments made directly to provider | Excluded from gift under §2503(e) | NO - direct-to-provider payments excluded |
Determining whether an arrangement is a "foreign trust" is often the threshold question. Reg §301.7701-7 provides the two-part test:
| Test | Detail |
|---|---|
| Court Test | Trust is "domestic" if a court within the US is able to exercise primary supervision over its administration |
| Control Test | Trust is "domestic" if one or more US persons have authority to control all substantial decisions of the trust |
| BOTH tests must be met for domestic | If either test fails, trust is FOREIGN |
| Substantial decisions | Defined to include distribution discretion, beneficiary selection, investment decisions, addition/removal of trustees, termination of trust, settlement of claims, judicial proceedings, etc. |
| Common foreign trust forms | UK family trusts, Cayman/BVI/Bermuda trusts, Singapore family offices, foreign retirement plans (RRSPs, RESP, foreign pensions), Spanish patrimonios, German Stiftungen, Swiss foundations |
| Foreign retirement plan trap | Foreign employer pension plans often treated as foreign trusts - Rev. Proc. 2020-17 provides exemption for certain tax-favored foreign retirement trusts |
Canadian Registered Retirement Savings Plans (RRSPs) and Registered Retirement Income Funds (RRIFs) are common for US persons with Canadian work history. Rev. Proc. 2014-55 provides AUTOMATIC exemption from Form 3520 and Form 3520-A reporting for these plans.
| Rev. Proc. 2014-55 Aspect | Detail |
|---|---|
| Eligible plans | RRSP, RRIF, Registered Pension Plan (RPP), Pooled Registered Pension Plan (PRPP), Specified Pension Plan (SPP) |
| Effect | NO Form 3520 OR Form 3520-A required for these plans |
| Deferral of US income tax | US person also deemed to elect deferral under US-Canada Treaty Article XVIII(7) - no annual income inclusion until distribution |
| FBAR and Form 8938 still required | Account balance still reported on FBAR (FinCEN 114) and Form 8938 if thresholds met |
| Eligibility | Individual must be US person who is (or was) a beneficiary of the Canadian plan; contributions only by service provider or employer, or by the individual when Canadian resident |
Broader exception for certain employer-funded retirement or savings trusts in foreign jurisdictions.
| Rev. Proc. 2020-17 Aspect | Detail |
|---|---|
| Eligible | Tax-favored foreign trust used for pension, retirement, education, disability, or medical purposes |
| Requirements | (1) Trust generally exempt from income tax or otherwise tax-favored under foreign law; (2) Annual reporting to foreign tax authorities; (3) Contributions limited by reference to earned income; (4) Tax-deferred or limited annual withdrawals |
| Effect | Exemption from Forms 3520 and 3520-A |
| Examples | UK Self-Invested Personal Pension (SIPP), Australian Superannuation, Canadian TFSA (potentially), Singapore CPF, certain German Riester plans |
| FBAR and Form 8938 still required | Reporting continues for separate forms |
| Eligibility analysis required | Each foreign plan analyzed against requirements; not automatic - careful examination needed |
Distributions from foreign trusts to US beneficiaries are governed by complex throwback rules designed to prevent indefinite tax-free accumulation in offshore trusts.
| Distribution Layer | Tax Treatment |
|---|---|
| Distributable Net Income (DNI) - current year | Taxed to beneficiary as ordinary income, retains character (dividends, capital gains, etc.) |
| Accumulation Distribution (UNI - undistributed net income) | Subject to throwback tax under §665-668 - tax computed as if income had been distributed ratably in prior years; interest charge applied under §668(a) |
| Throwback tax interest charge | Compound interest at underpayment rate from year of accumulation to year of distribution - can substantially exceed the tax itself for long-accumulated trusts |
| Return of corpus (basis) | Generally tax-free |
| Default method (no records) | Default method under §665 - all distribution treated as current accumulation distribution; very punitive |
| Computation | Form 3520 Schedule A (and Schedule B for throwback calculation); records of trust income by year critical |
| Foreign trust character preservation | Capital gains generally LOSE capital gain character on distribution from foreign nongrantor trust to US beneficiary - all ordinary income |
| Reasonable Cause Element | Detail |
|---|---|
| Authority | §6677(d) - no penalty if failure due to reasonable cause and not willful neglect |
| Factors considered | Taxpayer's experience, knowledge, and education; reliance on professional advice; complexity of the matter; lack of awareness of US filing obligations (limited for sophisticated taxpayers) |
| "Not willful neglect" | Distinguished from willfully ignoring known obligations |
| Reliance on professional advisor | May support reasonable cause if advisor was competent and given full information; not absolute defense |
| Recent immigrant/expat awareness | Difficult defense for second-generation immigrants who should have known of US tax obligations |
| Inadvertent error / good-faith mistake | May support if combined with corrective action upon discovery |
| Pattern of non-compliance | Multiple missed filings undermine reasonable cause |
| IRS first-time abatement | NOT applicable to Form 3520 penalties (limited to certain penalties under §6651) |
In Farhy v. Commissioner (160 T.C. No. 6, April 2023), the Tax Court held that the IRS lacks statutory authority to assess Form 5471 penalties under §6038(b). The DC Circuit later reversed in 2024, restoring IRS assessment authority. The Farhy issue does NOT extend to Form 3520 penalties under §6677 or §6039F, which have independent assessment authority. Practitioners should not rely on Farhy theories for Form 3520 penalty challenges - the underlying statutes differ.
| Streamlined Procedure | Form 3520 Treatment |
|---|---|
| Streamlined Domestic Offshore Procedures (SDOP) | For US residents with non-willful non-compliance; 5% misc. offshore penalty on highest aggregate balance; covers Form 3520 missed filings |
| Streamlined Foreign Offshore Procedures (SFOP) | For US persons living abroad; NO penalty for non-willful failure; covers Form 3520 missed filings |
| Coverage | 3 years of amended/delinquent income tax returns + 6 years of FBARs + Form 3520/3520-A delinquent filings for relevant years |
| Non-willfulness certification | Required - statement of non-willful failure with specific facts |
| Eligibility | Not under IRS examination; tax compliance otherwise current; non-willful conduct |
| 2025 changes per IRS announcement | Procedures generally preserved; OBBBA did not modify streamlined relief |
For taxpayers whose ONLY non-compliance is missed information returns (no unreported income), separate procedure provides penalty relief.
| Delinquent IIR Submission Aspect | Detail |
|---|---|
| Eligibility | (1) Have not filed required Form 3520; (2) Have reasonable cause for failure; (3) Are not under examination; (4) Have no unreported income |
| Procedure | File delinquent Form 3520 with statement attached describing reasonable cause |
| Effect | If accepted, no penalty assessed |
| IRS discretion | Acceptance not automatic - IRS may still impose penalty if it determines reasonable cause not adequately demonstrated |
| Vs Streamlined | Used when there IS reasonable cause; Streamlined requires non-willful but does not require reasonable cause |
Treasury and IRS issued proposed regulations in May 2024 that would significantly modify Form 3520 reporting:
| Proposed Change | Detail |
|---|---|
| Threshold for NRA gifts/bequests | Reduce from $100,000 to inflation-indexed amount (~$20,000 for 2024) |
| Effective date | Tax years ending after May 8, 2024 |
| Election to rely | Taxpayers may elect to rely on proposed regs IF they apply the proposed regs in their entirety and consistently for all relevant years and all related persons |
| Default until finalized | $100,000 threshold remains in effect; election is taxpayer-favorable only in specific circumstances |
| When favorable | Generally NOT favorable - lower threshold means more filings required; election rarely used |
| Finalization timeline | As of 2026, not yet finalized; status pending |
| Filing Aspect | Detail |
|---|---|
| Where to file | Internal Revenue Service Center, P.O. Box 409101, Ogden, UT 84409 |
| Filed with Form 1040? | NO - Form 3520 filed SEPARATELY from Form 1040 (most common error) |
| Due date | April 15 (calendar-year taxpayers); June 15 for US persons living abroad; October 15 if Form 4868 extended |
| Extension | Form 4868 extension of Form 1040 also extends Form 3520 - check box 1k on Form 3520 to confirm |
| Joint vs separate | Spouses may file joint Form 3520 if both are beneficiaries/grantors of same trust and file joint Form 1040 |
| Multiple trusts | SEPARATE Form 3520 for transactions with EACH foreign trust |
| Amended return | File amended Form 3520; write "AMENDED" on top |
| Currency | USD; use applicable exchange rate (Treasury rate for FBAR-like reporting; IRS yearly average for income computations) |
Form 3520 is filed SEPARATELY - mailed to Ogden. Including it with the Form 1040 mailed to the regular service center means it is not processed and IRS treats as not filed. Verify mailing address each filing season.
Two parents each giving $80,000 is $160,000 aggregated from related donors - above threshold. Tax software often does not aggregate automatically; preparer must verify.
Foreign inheritances are NOT income (under §102), but ARE reportable on Form 3520 if above threshold. "Not taxable" does NOT mean "not reportable." This is the most common error costing immigrant families.
If US person is treated as owner of foreign trust under §§671-679, the TRUST must file Form 3520-A by 15th day of 3rd month after trust year-end (March 15 for calendar year). US owner is RESPONSIBLE for ensuring trust files - $10,000 penalty if trust fails. Mitigate by attaching substitute Form 3520-A to own Form 3520.
Loan from foreign trust to US person, or US person's uncompensated use of trust property, is TREATED as distribution under §643(i) and reportable on Part III. Many practitioners miss non-cash distributions.
These cover different things: FBAR (FinCEN 114) - foreign FINANCIAL ACCOUNTS; Form 8938 - specified foreign FINANCIAL ASSETS; Form 3520 - foreign TRUSTS and GIFTS. Often multiple forms required for same facts.
Canadian RRSP/RRIF or qualifying tax-favored foreign retirement plans are exempt from Form 3520 - but many preparers file unnecessarily. Conversely, plans that don't qualify under these revenue procedures DO require Form 3520 even though they "look like" retirement accounts.
Capital gains distributed from foreign nongrantor trust to US beneficiary generally LOSE capital gain character - taxed as ordinary income. §667(a) - throwback rules override character preservation.
Distributions of accumulated trust income (not current-year DNI) trigger §665-668 throwback tax with compound interest from accumulation year. Practitioners often treat ALL distribution as current-year income - vastly understating tax for trusts with multi-year accumulations.
If trust records unavailable, §665 default method treats entire distribution as accumulation distribution from most punitive throwback computation. Aggressively gather records to avoid default method.
Gifts from covered expatriates under §877A are subject to 40% transfer tax on RECIPIENT under §2801 - separate from Form 3520 reporting. January 2025 final regs implemented this regime fully. Form 708 used for §2801 tax.
Foreign parent paying US child's tuition is excluded under §2503(e) ONLY if paid DIRECTLY to educational institution. Money transferred to child who then pays tuition is NOT excluded - still subject to Form 3520 if above threshold.
Gifts received BEFORE US person became a US tax resident are not reportable. But gifts received after residency starts trigger Form 3520. Date of residency status critical - first-year choice elections, dual-status returns must be analyzed.
Form 3520 is required even where reasonable cause defense would eliminate penalty. File the form, attach reasonable cause statement. Late filing with statement is far better than not filing at all.
If foreign trust does not file Form 3520-A, US owner MUST attach substitute Form 3520-A to own Form 3520. Failing to do so triggers $10,000 penalty under §6677(b) even if everything else properly reported.
Primary authority: IRC §6048 (Information reporting with respect to certain foreign trusts). §6048(a) (reportable events). §6048(b) (US owner of foreign trust). §6048(c) (distributions from foreign trusts). §6039F (Receipt of large gifts from foreign persons). §6039F(c)(1) (5% per month penalty up to 25% for failure to report). §6677 (Failure to file information with respect to certain foreign trusts). §6677(a) (35% penalty on transfers and distributions). §6677(b) (5% penalty on US owner; $10,000 minimum). §6677(d) (reasonable cause exception). §6677(b)(2) (continued failure - additional $10,000 per 30 days up to gross reportable amount). §6662(j) (40% accuracy-related penalty for undisclosed foreign financial assets). §671-679 (grantor trust rules). §672 (definitions). §673-678 (grantor trust attribution provisions). §679 (foreign trusts having US beneficiaries treated as grantor trusts). §643 (definitions for trust income tax). §643(i) (loans from foreign trusts treated as distributions). §665-668 (throwback rules - accumulation distributions from trusts). §665 (definitions for throwback). §666 (accumulation distribution allocated to preceding years). §667 (treatment of amounts deemed distributed). §667(a) (capital gain character loss on accumulation distribution from foreign trust). §668 (interest charge on accumulation distributions). §102 (gifts and inheritances not income to recipient). §2503(e) (tuition and medical payments excluded from gift). §877A (mark-to-market expatriation tax). §2801 (transfer tax on gifts from covered expatriates - 40% on recipient). Reg §301.6048-1 (reporting requirements). Reg §301.7701-7 (foreign trust definition - court and control tests). Notice 97-34 (initial guidance on §6039F and §6048 - aggregation of related foreign donors). Revenue Procedure 2014-55 (Canadian RRSP/RRIF/RPP/PRPP/SPP exemption from Forms 3520 and 3520-A). Revenue Procedure 2020-17 (Tax-favored foreign retirement and savings trust exemption from Forms 3520 and 3520-A). Treasury Decision 9999 / January 2025 (final regulations under §2801 - covered expatriate succession tax). Proposed Regulations May 2024 (reducing §6039F threshold for NRA/foreign estate gifts from $100,000 to inflation-indexed amount, currently around $20,000; taxpayers may elect to rely if applied in entirety and consistently). Streamlined Filing Compliance Procedures (Domestic and Foreign Offshore Procedures - for non-willful non-compliance including missed Forms 3520). Delinquent International Information Return Submission Procedures (separate procedure for reasonable-cause relief on missed Forms 3520 without unreported income). Form 3520 (Annual Return to Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts) - revised December 2023. Form 3520-A (Annual Information Return of Foreign Trust With a U.S. Owner) - revised December 2025. Form 4868 (extension extends Form 3520). Form 7004 (extension for Form 3520-A). Form 8082 (Notice of Inconsistent Treatment or Administrative Adjustment Request). Form 8938 (Statement of Specified Foreign Financial Assets - companion). FinCEN 114 (FBAR - companion). Form 708 (return for §2801 transfer tax). Filing address: Internal Revenue Service Center, P.O. Box 409101, Ogden, UT 84409. Farhy v. Commissioner, 160 T.C. No. 6 (2023) - reversed by D.C. Cir. 2024 - addresses §6038 not §6677; Farhy theories not applicable to Form 3520 penalties.