If you are a U.S. citizen or green card holder, you do pay U.S. taxes when you live abroad. The United States taxes based on citizenship rather than residency, so your worldwide income stays reportable to the IRS no matter where you live or where you earn it.1Internal Revenue Service. U.S. Citizens and Residents Abroad – Filing Requirements In practice, though, most expats owe little or nothing after applying the Foreign Earned Income Exclusion, which shelters up to $132,900 of earned income in 2026, and the Foreign Tax Credit, which offsets U.S. tax with income tax already paid to a foreign government.
Citizenship, Not Address, Triggers the Obligation
Most countries only tax people who live inside their borders. The U.S. does not. Wages from a job in Berlin, rental income from a flat in Tokyo, dividends from a brokerage in London — all of it counts as U.S.-taxable income if you hold a U.S. passport or a green card.1Internal Revenue Service. U.S. Citizens and Residents Abroad – Filing Requirements
People who have lived overseas for decades, paid local taxes faithfully, and hold no U.S.-source income still have a legal duty to file a return each year. The obligation is tied to your status, not your zip code.
When You Actually Have to File
Not every citizen abroad has to file. The requirement kicks in when your gross worldwide income crosses a threshold that tracks the standard deduction and adjusts each year. For the 2026 tax year:2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
- Single, under 65: $16,100
- Married filing jointly, both under 65: $32,200
- Head of household, under 65: $24,150
- Married filing separately: $5 if your spouse itemizes
These are total worldwide numbers before any exclusion. A dollar earned teaching English in Vietnam counts the same as a dollar earned in Virginia. Even if the Foreign Earned Income Exclusion will eventually erase your tax bill, you still have to file to claim it.
The $5 married-filing-separately threshold trips up expats married to non-U.S. citizens. If your spouse files a separate return and itemizes, you are effectively required to file regardless of how little you personally earned.
How Expats Avoid Double Taxation
Two provisions do the heavy lifting: the Foreign Earned Income Exclusion and the Foreign Tax Credit. Between them, most expats pay the IRS nothing on their salary or self-employment profits, even though they still have to file.
Foreign Earned Income Exclusion
For 2026, you can exclude up to $132,900 of foreign earned income from federal income tax. Two working spouses who each qualify can exclude up to $265,800 combined. A separate foreign housing exclusion lets you deduct qualifying housing costs up to $39,870 in 2026.3Internal Revenue Service. Figuring the Foreign Earned Income Exclusion
You have to pass one of two tests. The Physical Presence Test requires you to be physically present in a foreign country for at least 330 full days during any 12-month period, where a “full day” runs midnight to midnight — a partial day of travel does not count. The Bona Fide Residence Test applies if you have established a genuine home in a foreign country for an entire tax year with no immediate plans to return to the United States.4Internal Revenue Service. Foreign Earned Income Exclusion – Physical Presence Test
You claim it on Form 2555, attached to your return. Keep detailed travel logs; the IRS wants entry and exit dates for every country. For bona fide residence, keep documents that show real ties: a lease, utility bills, local tax returns, a residence permit.
Boundary worth knowing: the exclusion covers earned income only. Investment income, pensions, Social Security benefits, and capital gains are not eligible. If your income exceeds the cap or comes from passive sources, the Foreign Tax Credit does the rest of the work.
Foreign Tax Credit
The Foreign Tax Credit directly offsets your U.S. tax bill by the income tax you have already paid to a foreign government. Pay $15,000 in British income tax, and you can generally cut your U.S. tax liability by $15,000.5Internal Revenue Service. Foreign Tax Credit – Choosing to Take Credit or Deduction You claim it on Form 1116, reporting foreign taxes in both the original currency and U.S. dollars at the exchange rate on the date paid or accrued.6Internal Revenue Service. 2025 Instructions for Form 1116 – Foreign Tax Credit
You can use the exclusion and the credit together on different income, but not on the same dollars: income excluded under the FEIE cannot also generate a Foreign Tax Credit. In high-tax countries like France or Japan, the credit alone often wipes out the entire U.S. bill because local rates exceed U.S. rates.
Self-Employment Tax Does Not Go Away
Freelancers and business owners get caught by a specific gap: the Foreign Earned Income Exclusion does not reduce self-employment tax. Even if the FEIE eliminates your income tax entirely, you still owe Social Security and Medicare on your full net self-employment earnings.7Internal Revenue Service. Self-Employment Tax for Businesses Abroad
The IRS illustrates this with a consultant abroad who earns $95,000 in foreign income with $27,000 in business deductions, leaving $68,000 in net profit. The FEIE removes the income tax, but the full $68,000 remains subject to self-employment tax at 15.3% (12.4% Social Security up to the wage base, plus 2.9% Medicare on all earnings).8Internal Revenue Service. Foreign Earned Income Exclusion
If you live in a country with a totalization agreement with the United States, you may be exempt from one country’s social security system. The U.S. has agreements with about 30 countries, including Canada, the United Kingdom, Germany, France, Japan, Australia, and South Korea.9Social Security Administration. U.S. International Social Security Agreements If the agreement assigns your coverage to the foreign country, request a Certificate of Coverage from the Social Security Administration to prove exemption from U.S. self-employment tax.10Social Security Administration. Certificate of Coverage – International Programs Without that certificate, you pay into both systems.
Reporting Foreign Bank Accounts and Assets
Two separate reporting rules run alongside your tax return. They have different thresholds, different forms, and different penalties, and one does not satisfy the other.
FBAR (FinCEN Form 114)
If the combined value of all your foreign financial accounts crosses $10,000 at any point during the year, you must file a Report of Foreign Bank and Financial Accounts. That covers checking, savings, brokerage, and any account where you hold signature authority, even if the money is not yours.11Financial Crimes Enforcement Network. Report Foreign Bank and Financial Accounts The threshold is aggregate; two accounts at $6,000 each trigger the requirement.
File the FBAR electronically through FinCEN’s BSA E-Filing System, not with your tax return. The deadline is April 15, with an automatic extension to October 15 that requires no separate form.12Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
Non-willful violations carry a penalty of up to $10,000 per report, adjusted for inflation. After the Supreme Court’s 2023 decision in Bittner v. United States, that penalty applies per annual report, not per account. Willful violations can reach $100,000 or 50% of the account balance, whichever is greater.
Form 8938 (FATCA)
Form 8938 covers a broader set of assets, including accounts, foreign stock held outside a brokerage, interests in foreign entities, and foreign pension plans. Thresholds are much higher for expats than for people living stateside:13Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
- Single abroad: assets over $200,000 on the last day of the year, or $300,000 at any point during the year
- Married filing jointly abroad: assets over $400,000 on the last day of the year, or $600,000 at any point during the year
Form 8938 is attached to your tax return. The penalty starts at $10,000 and grows by another $10,000 for every 30-day period you ignore an IRS notice, capped at $60,000. If the IRS finds you underpaid tax because of an undisclosed foreign asset, the accuracy penalty is 40% of the underpayment.14Internal Revenue Service. Instructions for Form 8938 The FBAR and Form 8938 overlap; the same account can trigger both, and you file both.15Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements
Large Gifts From Foreign Persons
Gifts or bequests from a nonresident alien individual or foreign estate over $100,000 in a tax year must be reported on Form 3520. Gifts from foreign corporations or partnerships have a lower, inflation-adjusted threshold.16Internal Revenue Service. Instructions for Form 3520 The recipient does not pay income tax on the gift. Skipping the form, however, can cost up to 25% of the gift’s value.
Deadlines Expats Get
U.S. citizens abroad receive an automatic two-month extension, moving the filing deadline from April 15 to June 15. You qualify if your main home and place of work are outside the United States on the regular due date. No form is required; attach a statement noting you qualified.17Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad – Automatic 2-Month Extension of Time to File If you still cannot make June 15, file Form 4868 before that date to push the deadline to October 15.18Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad
The extension only covers filing, not paying. Interest on any unpaid tax starts running from April 15 regardless of the extended deadline.19Internal Revenue Service. U.S. Taxpayers Living Abroad Must File and Pay Taxes by June 16 If you expect to owe, estimate and pay by April 15. Expats who fully offset with the exclusion and credit usually owe nothing, but if your situation is more complex, don’t treat June 15 as free.
Your Old State May Still Want a Return
Moving abroad may not end your state tax obligation. California, New Mexico, South Carolina, Virginia, and New York are commonly cited as “sticky” states that make it hard to shed residency for tax purposes simply by leaving the country. Other states have no income tax at all, so the question doesn’t arise.
Whether you still owe depends on that state’s residency rules: whether you kept a home there, held onto a driver’s license, stayed on the voter rolls, or expressed an intent to return. Rules vary a lot. If you left from a state with an income tax, check its specific requirements rather than assuming departure ended the obligation.
If You Have Never Filed
Plenty of Americans abroad didn’t know they had to file. The IRS offers a way to get current without penalties if your failure was non-willful, meaning it came from honest ignorance rather than deliberate concealment.
Streamlined Foreign Offshore Procedures
This program is built for U.S. taxpayers living outside the country. To qualify, you must have lived abroad and been physically outside the United States for at least 330 days in at least one of the last three years. You submit three years of delinquent or amended tax returns and six years of delinquent FBARs.20Internal Revenue Service. U.S. Taxpayers Residing Outside the United States
Failure-to-file, failure-to-pay, accuracy, information-return, and FBAR penalties are all waived under the program.20Internal Revenue Service. U.S. Taxpayers Residing Outside the United States You still owe any actual tax due plus interest. You have to certify under penalty of perjury that your non-compliance was non-willful, so the program is not appropriate if you deliberately avoided filing.
Relief for Certain Former Citizens
If you renounced U.S. citizenship after March 18, 2010, and never filed returns because you didn’t know you had to, a separate procedure applies. To qualify, your aggregate tax liability for the six years at issue must be $25,000 or less and your net worth under $2,000,000. Meeting the criteria and filing the required returns keeps you from being treated as a “covered expatriate” subject to the exit tax.21Internal Revenue Service. Relief Procedures for Certain Former Citizens
What Non-Compliance Costs
Penalties for foreign filings stack fast and often hit harder than domestic penalties, in part because the IRS treats these returns as difficult to audit independently.
- Failure to file Form 8938: $10,000 initial penalty, plus up to $10,000 per 30-day period after IRS notice, capped at $60,000. Underpayments tied to undisclosed assets face a 40% accuracy penalty.14Internal Revenue Service. Instructions for Form 8938
- Failure to file FBAR: up to $10,000 per report for non-willful violations, adjusted annually for inflation; willful violations up to $100,000 or 50% of the account balance.
- Failure to file Form 5471 (foreign corporation ownership): $10,000 per foreign corporation per year, plus up to $50,000 in further penalties if you ignore an IRS notice.22Internal Revenue Service. Instructions for Form 5471
- Failure to file Form 3520 (foreign gifts): up to 25% of the unreported gift amount.
These sit on top of the ordinary failure-to-file and failure-to-pay penalties on your income tax return. Many are assessed automatically, and fighting them after the fact is harder than filing on time. If you are behind, the streamlined procedures are almost always the better path.