Reporting Foreign Accounts: What You Must Declare (2026)

If you hold a bank account, investment account, pension, or business interest outside the United States and you are a US tax resident, you are almost certainly required to report it — and the penalties for missing a filing can dwarf the balance in the account itself. Two overlapping systems, FBAR and FATCA, plus a constellation of supplementary forms, mean that "I didn't know" is rarely an acceptable defence. Read this before your next tax deadline.

Why This Matters More in 2026

The compliance environment for foreign account reporting has been tightening steadily for over a decade, and 2026 represents the sharpest enforcement climate many immigrant taxpayers have ever faced. The Foreign Account Tax Compliance Act (FATCA) inter-governmental agreements now cover well over 100 countries, meaning financial institutions from Frankfurt to Nairobi are actively transmitting account data to the IRS. The era of hoping your home-country account would go unnoticed is effectively over.

For immigrants specifically, the risk is compounded by a knowledge gap. A professional arriving on an H-1B visa, a business owner on an E-2, or a green card holder who has just met the Substantial Presence Test for the first time may not realise that their US tax residency status triggers disclosure obligations on accounts they have held for years. And unlike a missed deduction, a missed FBAR or FATCA filing is not simply corrected with an amended return — it can trigger penalty proceedings, audits, and in extreme cases criminal referral.

The Financial Crimes Enforcement Network (FinCEN) and the IRS are different agencies, but they share data. Foreign financial institutions are sharing data with the US government under FATCA. The compliance net is genuinely global in 2026.

The Two Core Reporting Systems: FBAR vs. FATCA

These two regimes are frequently confused, but they are separate obligations with different thresholds, forms, filing destinations, and penalty structures. Many taxpayers must comply with both simultaneously.

The key takeaway: an account that is reportable on FBAR is also likely reportable on Form 8938. But Form 8938 captures a wider universe of assets, including foreign stocks held directly (not in an account) and foreign pension arrangements.

Who Must Report: The Residency Trigger

Your US tax residency status determines whether these obligations apply to you at all. This is one of the most consequential questions an immigrant faces, and it is also one of the most misunderstood.

Green card holders are US tax residents from the date their card is effective, regardless of how many days they spend in the United States.

Visa holders (H-1B, L-1, E-2, O-1, and others) become US tax residents once they meet the Substantial Presence Test: present in the US for at least 31 days in the current year AND 183 days across the current year and the two preceding years, using a weighted formula (all days in the current year + one-third of days in the prior year + one-sixth of days the year before that).

Non-resident aliens (NRAs) generally do not owe FBAR or Form 8938 on foreign accounts, though they do owe US tax on US-source income. If you are classified as an NRA and have US investment accounts, the rules differ — our guide to Best Brokerage Accounts for Non-Resident Aliens 2026 covers the investment side of that picture.

The year you first cross the residency threshold is particularly complex. You may be a dual-status alien — an NRA for part of the year and a resident for the rest — with different rules applying to each period. Read our companion article on Tax Residency Explained When You Move Mid-Year (2026) for a detailed breakdown.

What You Must Actually Declare: Account by Account

Foreign Bank Accounts

The classic case. A checking, savings, or fixed-deposit account at a bank outside the US with any positive balance must be counted toward your FBAR aggregate. If the combined maximum value of all your foreign accounts exceeded $10,000 at any moment during the calendar year, you must file.

Illustrative Example — Priya, Software Engineer on H-1B: Priya moved from India to California in March 2024 and became a US tax resident for the full 2025 tax year. She has a savings account in India with a maximum balance of ₹620,000 (approximately $7,400) and a second account with a maximum of ₹280,000 (approximately $3,300). Neither account alone exceeds $10,000, but combined they peak at approximately $10,700 at one point during the year. Priya must file an FBAR for 2025, reporting both accounts. She does not owe US tax on the interest because the amounts are small, but she must report the interest as income on her Form 1040.

Foreign Brokerage and Investment Accounts

Any account at a foreign brokerage holding stocks, bonds, ETFs, or mutual funds is a foreign financial account for FBAR purposes and a specified foreign financial asset for Form 8938 purposes. This catches many immigrants who kept investment portfolios in their home countries when they relocated.

Note that foreign stocks or securities held directly (not in a custodial account) are reportable on Form 8938 but not on FBAR. This is one case where FATCA casts a wider net.

Foreign Pension Plans and Retirement Accounts

This is the area that surprises the most people. A UK ISA, a Canadian RRSP, an Australian superannuation fund, a German Riester-Rente — all are potentially reportable under FATCA. Whether they also need to appear on FBAR depends on whether they qualify as a "financial account" under the Bank Secrecy Act, which turns on the structure of the plan.

Some tax treaties explicitly address pension treatment and may provide relief from US taxation on those funds. But as noted in the FAQ, a treaty exemption from tax does not automatically mean exemption from disclosure. Read our article on Double Taxation & How Tax Treaties Actually Work 2026 before assuming your pension is off the hook.

Foreign Business Interests and Corporate Accounts

If you own 50% or more of a foreign corporation, you may need to file Form 5471. If you own a foreign partnership interest, Form 8865 may be required. If you receive gifts or inheritances from foreign persons above certain thresholds, Form 3520 applies.

Business owners who have set up a US LLC but also maintain foreign bank accounts used for business operations face a particularly dense filing environment. Our article on Filing US Business Taxes as a Non-Resident Owner 2026 addresses the US entity side of that picture, and you should also be aware of Form 5472 and the Penalty Most Foreign Owners Miss, which specifically covers foreign-owned single-member LLCs.

Foreign Real Estate

Foreign real estate itself is not a foreign financial account and is not reported on FBAR. However:

• The rental income must be reported on your US return.
• Bank accounts holding rent proceeds are reportable if thresholds are met.
• The value of the property counts toward your Form 8938 calculation if it is held through a foreign entity (e.g., a foreign LLC or trust). If held directly in your own name, it is excluded from Form 8938 but the income is not excluded from your tax return.

If you are considering cross-border property investment, you may also find our overview of Buy to Let Mortgages for Non-Residents useful for understanding how lenders approach non-resident landlords internationally.

Moving Money and Reporting: Two Different Things

Many taxpayers conflate the act of transferring money internationally with the obligation to report accounts. These are separate issues.

Transfers themselves are not reportable under FBAR or FATCA (though large transfers may trigger bank-level reporting under domestic Bank Secrecy Act rules). What matters for FBAR and FATCA is the existence and maximum balance of the account, not the movement of funds in and out.

That said, if you are regularly repatriating foreign earnings to the US, you will want to minimise currency conversion costs. Our guide to the Cheapest Ways to Move Money Between Countries 2026 covers that practical angle separately.

Worked Illustrative Examples

Example 1: The "Under the Radar" Account

Scenario: Tomás moved from Brazil to Texas on a green card five years ago. He has a bank account in São Paulo that he almost never uses, currently holding the equivalent of $12,000. He assumed that because he pays taxes in the US and doesn't earn money in Brazil, he has nothing to report.

Reality: The account balance alone — $12,000 — exceeds the $10,000 FBAR threshold. Tomás should have been filing FinCEN Form 114 every year the balance exceeded the threshold. If he has missed five years of filings and the failure is deemed non-willful, he could face penalties of up to $16,000 per year, per account — a potential $80,000 in penalties on an account holding $12,000. Using the Streamlined Domestic Offshore Procedures (with professional help) could reduce this significantly, but acting promptly matters.

Example 2: The Multi-Country Professional

Scenario: Aisha is a British national who lived and worked in Germany for three years, then relocated to New York City on an L-1 visa in January 2025. She became a US tax resident in 2025 via the Substantial Presence Test. She has:

• A Barclays current account in the UK: maximum balance £8,000 (~$10,200)
• A German online brokerage account with ETFs worth €22,000 (~$23,800) at year end
• A UK Stocks & Shares ISA worth £30,000 (~$38,200)

FBAR analysis: UK bank account (~$10,200) + German brokerage (~$23,800) + ISA (~$38,200) = aggregate ~$72,200. All three exceed the $10,000 aggregate threshold, so all three must be reported on FinCEN Form 114.

Form 8938 analysis: Total specified foreign financial assets = ~$72,200, which exceeds the $50,000 last-day threshold for a single US resident. Form 8938 must be filed with her tax return, listing all three accounts.

Tax note: The ISA's tax-free status under UK law is not automatically recognised by the US. Income generated inside an ISA is generally taxable in the US. Aisha should consult a CPA familiar with the UK-US tax treaty.

7 Common Mistakes — and How to Avoid Them

1. Mistake: Thinking the $10,000 FBAR threshold applies per account. Solution: The $10,000 threshold is an aggregate across all foreign accounts. Two accounts each holding $6,000 both trigger a filing obligation. Count every account together.

2. Mistake: Missing the FBAR deadline because it seems separate from the tax return. Solution: The FBAR deadline is April 15, with an automatic extension to October 15. Set a calendar reminder and file it at the same time you prepare your tax return — even though it goes to FinCEN, not the IRS.

3. Mistake: Forgetting accounts you have signatory authority over (but don't own). Solution: If you are a signatory on a foreign business account, a parent's account, or an employer's account, that account must be included in your FBAR count even if it is not yours. Check any account over which you have authority to transact.

4. Mistake: Assuming a tax treaty exemption eliminates the need to report. Solution: Treaties primarily govern taxation, not disclosure. You may owe no US tax on a foreign pension income and still be required to report the account. Verify with a CPA.

5. Mistake: Using the wrong exchange rate to value foreign accounts. Solution: Use the US Treasury's official foreign currency exchange rates published for the last day of the calendar year. Do not use your bank's rates, mid-market rates, or rates from another date.

6. Mistake: Not reporting an account that was closed during the year. Solution: If an account existed and contributed to an aggregate balance above $10,000 at any point in the year, it must be reported on FBAR regardless of whether it was open at year end. Report the maximum value it held during the year.

7. Mistake: Believing that small foreign income below a standard deduction doesn't require account disclosure. Solution: The FBAR and Form 8938 thresholds are based on account balances, not income. Even if you earned $0 in interest, a $15,000 balance triggers full disclosure.

How Foreign Banks Are Reporting on You

Under FATCA, foreign financial institutions (FFIs) that have signed agreements with the IRS — or whose governments have signed inter-governmental agreements (IGAs) — report account holder information directly to the relevant tax authority, which then shares it with the US under automatic exchange frameworks.

In practice, this means that when you open an account at a major bank in the UK, Canada, Australia, Germany, Singapore, or dozens of other countries, you will be asked to complete a self-certification form disclosing your US tax status. If you certify that you are a US person, the bank will report your account details to the relevant tax authority under FATCA.

By 2026, the Common Reporting Standard (CRS) — a parallel OECD initiative — has expanded this data-sharing globally. Even in countries without a formal FATCA IGA, US persons may find their account data reaching the IRS through multilateral channels.

The practical message: if you have foreign accounts, assume they are visible to the IRS. Voluntary compliance is always preferable to enforcement.

Penalties in Depth

The penalty structure for foreign account reporting failures is deliberately severe, designed to deter deliberate concealment of offshore wealth.

The "willful" vs "non-willful" distinction is critical and often litigated. Courts have found willfulness based on a taxpayer signing a tax return that asked about foreign accounts and answering "no" — even if the taxpayer claims they didn't read the question carefully.

Voluntary Disclosure Options

If you have missed prior-year filings, you have options, but only if you act before the IRS contacts you:

• Streamlined Domestic Offshore Procedures: For US residents. Requires filing amended returns for 3 years, FBARs for 6 years, and paying a 5% miscellaneous offshore penalty on the highest aggregate foreign account balance.
• Streamlined Foreign Offshore Procedures: For non-US residents. No penalty, but requires certification that the failure was non-willful.
• Delinquent FBAR Submission Procedures: For those who owe no additional tax but simply missed FBAR filings.

Never attempt voluntary disclosure without a CPA or tax attorney. An error in the certification of "non-willful" conduct can transform a manageable penalty into a willful one.

Special Situations for Immigrants and Foreign Nationals

ITIN Holders

If you do not have a Social Security Number (SSN) and have instead been issued an Individual Taxpayer Identification Number (ITIN), you can still be subject to FBAR and FATCA if you meet the residency criteria. ITIN holders who are US tax residents follow the same rules as SSN holders for foreign account disclosure.

New Arrivals in Their First Year

In your first year of US tax residency, you may have held substantial foreign assets for years without any US reporting obligation. From the moment you become a US tax resident, those accounts become reportable. The good news: there is no retroactive reporting obligation for years when you were an NRA. The risk: many people don't realise the obligation begins and miss that first-year filing.

Business Owners With Foreign Corporate Accounts

If your business holds accounts at foreign banks — even for legitimate operational reasons — those accounts may count toward your FBAR aggregate if you are a principal officer or hold 50% or more ownership. This catches many entrepreneurs running cross-border businesses. The complexity multiplies if the foreign business itself has reporting obligations; your CPA needs to understand both your personal and entity-level filing requirements simultaneously.

Building a Compliance Routine

The best way to handle foreign account reporting is to treat it as an annual checklist rather than a crisis to manage every April. Here is a practical framework:

January: Gather statements for every foreign account, pension, and investment showing the highest balance during the prior calendar year. Note account numbers, institution names, country, and peak balance.

February: Convert all foreign currency balances using the US Treasury exchange rates for December 31 of the prior year. Calculate your aggregate FBAR balance. Determine whether you cross the Form 8938 threshold.

March: Provide your CPA with the complete picture alongside your other tax documents. If you are filing your own taxes, use the FinCEN BSA E-Filing System for FBAR and attach Form 8938 to your 1040.

April 15: File both your tax return (with Form 8938) and your FBAR. Both carry an automatic extension to October 15 if needed, but interest accrues on any tax due from April 15.

Year-round: If you open or close a foreign account, note the date and the closing balance. If you receive a foreign inheritance or large gift, flag it for Form 3520 review. If your circumstances change significantly — a new country, a new visa, a new business — update your CPA proactively.

Where to Get Help

Foreign account reporting sits at the intersection of tax law and financial compliance. The forms themselves are not always technically difficult, but the judgment calls — willful vs. non-willful, which accounts count, which treaty provisions apply, how to handle a foreign pension — require professional expertise.

Seek a Certified Public Accountant (CPA) with specific experience in expat and international taxation, or a tax attorney if there is any risk of penalty proceedings. Fee-only CPAs who specialise in US international tax are the most common resource for immigrants in this situation.

If your foreign account complexity stems from significant cross-border wealth or investment activity, a private banking relationship may also be worth exploring — see our guide to Private Banks for High Net Worth New US Residents 2026 for context on how those institutions handle compliance support.

The information in this article is for general educational purposes only and does not constitute tax advice. Foreign account reporting rules are complex and fact-specific. Please consult a qualified CPA or tax attorney for advice tailored to your circumstances.