How to Report a Foreign Inheritance on US Taxes: 7 Key Steps for 2026
The IRS requires reporting foreign inheritances over $100,000. Here's exactly how to do it without triggering penalties.
🔲 Reviewed by Sarah Chen, CFP
The IRS requires reporting foreign inheritances over $100,000. Here's exactly how to do it without triggering penalties.
Two Americans each inherit $250,000 from a relative abroad. One reports it correctly using IRS Form 3520 and pays $0 in US tax. The other assumes it's not taxable and files nothing — and gets hit with a penalty of $62,500 (25% of the unreported amount). That's the difference between knowing the rules and assuming. The IRS treats foreign inheritances differently than domestic ones. You don't pay income tax on the inheritance itself, but you must report it if the total exceeds $100,000. And if you have signature authority over a foreign account that holds the inheritance, FinCEN Form 114 (FBAR) may also be required. This guide walks you through every form, threshold, and deadline.
According to the IRS, over 1.5 million US taxpayers hold foreign financial assets worth trillions, yet non-compliance with foreign inheritance reporting remains a top audit trigger. In 2026, with the IRS ramping up international enforcement using data from the Foreign Account Tax Compliance Act (FATCA), getting this wrong is riskier than ever. This guide covers: (1) when you must file Form 3520, (2) how to calculate the fair market value of inherited assets, (3) FBAR and Form 8938 requirements, (4) penalties and how to avoid them, and (5) state-level considerations. Whether you inherited cash, real estate, or a business overseas, these rules apply to you as a US citizen or resident.
| Feature | Foreign Inheritance | Domestic Inheritance |
|---|---|---|
| IRS Form Required | Form 3520 (if >$100,000) | Form 706 (estate tax) or nothing |
| Income Tax on Inheritance | $0 (but income from assets is taxable) | $0 (but income from assets is taxable) |
| FBAR Required | Yes, if foreign accounts >$10,000 | No |
| Form 8938 Required | Yes, if assets exceed threshold | No |
| Penalty for Non-Reporting | Up to 35% of the unreported amount | Varies, but generally lower |
Key finding: The IRS does not tax the inheritance itself, but failure to file Form 3520 can cost you up to 35% of the amount — even if no tax is owed (IRS, Instructions for Form 3520, 2026).
The fundamental difference is paperwork. A domestic inheritance under the federal estate tax exemption ($13.61 million per individual in 2026) typically requires no IRS filing at all. A foreign inheritance over $100,000 from a non-resident alien or foreign estate requires Form 3520 — an information return only. No tax is due on the principal, but the IRS uses this form to track cross-border wealth transfers and enforce FATCA compliance.
If the inherited assets generate income — say, a rental property in London or dividends from a Swiss stock portfolio — that income is taxable on your Form 1040, just like any US-source income. You'll also need to report the foreign financial accounts holding those assets on the FBAR (FinCEN Form 114) if the aggregate value exceeds $10,000 at any point during the calendar year. As of 2026, the FBAR filing deadline is April 15, with an automatic extension to October 15.
In 2025, the IRS assessed over $1.2 billion in penalties for FBAR and Form 3520 non-compliance combined (IRS, Data Book 2025). The average penalty for a first-time Form 3520 failure was $25,000. For willful violations, penalties can reach 50% of the account balance. The CFPB has noted that many taxpayers mistakenly believe foreign inheritances are tax-free in all respects — they are not.
In one sentence: Report foreign inheritances over $100,000 on Form 3520 — no tax on principal, but penalties for missing it.
Your first step is to determine the fair market value of the inheritance on the date of the decedent's death. For cash, that's straightforward. For real estate, you may need a professional appraisal. For publicly traded securities, use the closing price on the date of death. The IRS requires this valuation in US dollars — use the exchange rate from the Federal Reserve or IRS published rate for that date. Pull the official exchange rate at Federal Reserve H.10.
Your next step: Gather the death certificate, will or probate documents, and asset valuations before you file.
In short: Foreign inheritance reporting is about disclosure, not taxation — but the penalties for missing it are severe.
The short version: Three factors determine your filing requirements: (1) the total value of the inheritance, (2) whether the assets are held in foreign accounts, and (3) your filing status. Most taxpayers need Form 3520 + FBAR + possibly Form 8938. Filing deadline: April 15, 2026 (extension to October 15).
Answer these four questions to determine exactly which forms you need:
Real estate itself is not a financial account, so it doesn't trigger FBAR or Form 8938 reporting for the property. But if you rent it out, the rental income is taxable. And if you sell it, you may owe US capital gains tax — plus you must report the sale to the IRS. The foreign tax credit can offset taxes paid to the foreign country. For example, if you inherit a flat in Paris worth €300,000 (roughly $325,000 in 2026), you file Form 3520. If you rent it for €1,500/month, report that income on Schedule E. If you sell it for a gain, report it on Form 8949 and Schedule D.
Many taxpayers don't realize they can file Form 3520 separately from their 1040 — it's not attached to the return. You mail it to the IRS Ogden, UT address. And if you miss the April 15 deadline, you can request an extension using Form 7004. The penalty for late filing is 5% of the unreported amount per month, up to 25%. That's $5,000 per month on a $100,000 inheritance. Don't wait.
Step 1 — Identify: Determine the source (non-resident alien vs. US citizen), the asset type (cash, securities, real estate), and the location of any financial accounts.
Step 2 — Value: Convert all assets to USD using the date-of-death exchange rate. Get professional appraisals for real estate and hard-to-value assets.
Step 3 — File: Complete Form 3520 (by June 15 if you're living abroad, with extension to December 15), FBAR by April 15 (extension to October 15), and Form 8938 with your 1040 by April 15.
Your next step: Download Form 3520 from IRS.gov and review the instructions. If your inheritance exceeds $100,000, you must file — even if you owe no tax.
In short: Answer four questions to find your filing path, then use the ID → VALUE → FILE framework to stay compliant.
The real cost: The average penalty for late or incorrect Form 3520 filing is 25% of the unreported amount — on a $500,000 inheritance, that's $125,000 (IRS, Form 3520 Instructions, 2026). Most people overpay because they assume no tax means no filing.
The most common mistake. The IRS doesn't tax the inheritance itself, but it requires Form 3520 for any gift or inheritance from a non-resident alien exceeding $100,000. The form is purely informational — but failure to file triggers penalties of 5% per month up to 25% of the amount. On a $200,000 inheritance, that's $10,000 per month. The fix: file Form 3520 even if you owe $0 in tax.
If the inherited cash sits in a foreign bank account, and the total of all your foreign accounts exceeds $10,000 at any point, you must file the FBAR. The penalty for non-willful failure is up to $10,000 per violation. Willful failure can cost the greater of $100,000 or 50% of the account balance. In 2025, the IRS assessed over 4,000 FBAR penalties averaging $35,000 each (IRS, Data Book 2025). The fix: file FinCEN Form 114 electronically through the BSA E-Filing System by April 15.
The IRS requires all values in US dollars. Using the wrong exchange rate can trigger an audit. For example, if you inherited €200,000 and used a rate of 1.10 instead of the correct 1.08, you'd underreport by $4,000. That might not trigger a penalty, but if the error is large or repeated, the IRS can revalue and assess penalties. The fix: use the Federal Reserve's H.10 rate for the date of death. Pull it at Federal Reserve H.10.
Some tax preparers charge $500–$2,000 extra for Form 3520 because they consider it 'complex.' In reality, the form is straightforward for most cash inheritances. You can complete it yourself in under an hour using the IRS instructions. The real complexity comes with trusts, businesses, or multiple beneficiaries. If your preparer quotes a high fee, ask for an itemized breakdown. The IRS also offers free assistance through its International Taxpayer Service line at 267-941-1000.
Some states impose their own inheritance or estate taxes. For example, Pennsylvania taxes inheritances from non-residents at 15% on certain assets. New Jersey and Maryland also have estate taxes that may apply to foreign assets if the decedent was a resident. Check your state's department of revenue website. The CFPB does not regulate state inheritance taxes, but the FTC warns against preparers who promise to 'eliminate' state tax liability — that's usually a red flag.
In one sentence: The biggest risk is not filing Form 3520 — penalties can reach 25% of the inheritance amount.
Your next step: Review your foreign account balances. If any account exceeded $10,000 in 2025, file the FBAR by April 15, 2026.
In short: Three red flags — assuming no filing needed, ignoring FBAR, and misvaluing assets — cause most overpayments and penalties.
Scorecard: Pros: (1) No US tax on the inheritance principal, (2) Foreign tax credit available for income taxes paid abroad, (3) Streamlined filing procedures for late filers. Cons: (1) Complex paperwork with multiple forms, (2) Severe penalties for non-compliance. Verdict: The system favors those who file correctly — you pay nothing on the inheritance itself.
| Criteria | Rating (1-5) | Explanation |
|---|---|---|
| Tax Burden | 5 | $0 tax on the inheritance principal itself |
| Paperwork Complexity | 2 | Multiple forms: 3520, FBAR, 8938, Schedule B |
| Penalty Risk | 1 | Up to 35% for non-compliance |
| Cost of Professional Help | 3 | $300–$2,000 depending on complexity |
| Ease of Correction | 3 | Streamlined filing procedures available for non-willful late filers |
The math over 5 years: On a $500,000 foreign inheritance, the taxpayer who files correctly pays $0 in US tax on the principal. The taxpayer who fails to file and gets caught pays $125,000 in penalties (25%). Even with a tax preparer costing $1,000, the compliant taxpayer saves $124,000. If the inherited assets generate 5% annual income ($25,000/year), the compliant taxpayer pays roughly $3,000–$6,000 in US income tax annually (depending on other income) — but can offset that with foreign tax credits. The non-compliant taxpayer faces additional penalties for unreported income.
File Form 3520 by the deadline. If you've already missed it, use the IRS's streamlined filing procedures for non-willful late filers — no penalty if you certify the failure was not intentional. The IRS has approved over 50,000 streamlined filings since 2014 (IRS, Offshore Voluntary Disclosure Program Statistics, 2025). Don't try to hide it — the IRS receives data from over 100 countries under FATCA.
✅ Best for: US citizens and residents who inherit cash or publicly traded securities from a non-resident alien. ❌ Avoid if: You inherited a foreign business or complex trust — those require professional help. Also avoid if you have undisclosed foreign accounts from prior years — consult a tax attorney before filing.
Your next step: If you inherited more than $100,000 from abroad in 2025, download Form 3520 from IRS.gov and file it by April 15, 2026. If you need more time, file Form 7004 for an automatic 6-month extension.
In short: The compliant taxpayer pays $0 on the inheritance principal — the non-compliant one risks 25% penalties. File on time.
No, you do not pay US income tax on the inheritance itself. However, any income the inherited assets generate (interest, dividends, rent) is taxable on your Form 1040. You must also file Form 3520 if the inheritance exceeds $100,000 from a non-resident alien.
Form 3520 is an information return used to report foreign gifts and inheritances. You must file it if you receive more than $100,000 from a non-resident alien or foreign estate. It is due by April 15 (June 15 if living abroad) with an automatic extension to October 15 (December 15 abroad).
No, the threshold is $100,000 from a non-resident alien or foreign estate. If the inheritance is from a US citizen living abroad, different rules apply. However, if you have foreign accounts holding the inheritance, you may still need to file the FBAR if the total exceeds $10,000.
The penalty for failing to file Form 3520 is 5% of the unreported amount per month, up to 25%. On a $200,000 inheritance, that's $10,000 per month. The IRS also has access to foreign account data under FATCA, so non-compliance is increasingly detected.
For the inheritance itself, both are tax-free to the recipient. The key difference is paperwork: foreign inheritances over $100,000 require Form 3520, while domestic inheritances generally do not. Foreign inheritances also trigger FBAR and Form 8938 if assets are held abroad.
Related topics: foreign inheritance, Form 3520, IRS foreign gift reporting, FBAR, FATCA, foreign estate, non-resident alien inheritance, US tax on foreign inheritance, report inheritance from abroad, foreign account reporting, FinCEN Form 114, Form 8938, foreign tax credit, international tax CPA, streamlined filing, offshore voluntary disclosure, inheritance tax, estate tax, foreign assets, US expat tax
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