If you move abroad as a U.S. citizen or green card holder, you still have to pay U.S. taxes, or at least file for them, because the United States taxes its citizens and permanent residents on worldwide income no matter where they live. It is one of only two countries that taxes based on citizenship rather than residence. The filing obligation follows you until you either fall below the income thresholds or formally give up your U.S. status. The actual tax bill, though, is often reduced to zero or close to it once you apply the exclusions, credits, and treaty benefits built into the system.
When You Still Have to File
Your filing requirement depends on worldwide gross income, not U.S.-source income. For the 2026 tax year, a single filer under 65 must file at $16,100 of gross income. A married couple filing jointly, both under 65, files at $32,200.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Married filing separately kicks in at just $5. Anyone with $400 or more in net self-employment earnings has to file regardless of total income.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
Living overseas does buy you time. If your home and primary workplace are outside the United States and Puerto Rico on April 15, you get an automatic two-month extension to June 15.3Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad – Automatic 2-Month Extension of Time to File A further extension to October 15 is available with Form 4868. The extension covers paperwork only. Interest on any unpaid balance accrues from April 15, so if you expect to owe, pay an estimate by that date to stop the clock.4Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad
How Most Expats Avoid Paying Twice
Filing is not the same as owing. Three tools do most of the work of eliminating or shrinking the U.S. bill for Americans abroad, and most people use some combination of them.
The Foreign Earned Income Exclusion
The Foreign Earned Income Exclusion lets you exclude up to $132,900 of foreign wages or self-employment income from U.S. tax for the 2026 tax year, with the amount adjusted annually for inflation.5Internal Revenue Service. Figuring the Foreign Earned Income Exclusion A married couple where both spouses qualify can each claim the full exclusion on their own earnings.
To qualify, your tax home has to be in a foreign country and you have to pass one of two tests.6Office of the Law Revision Counsel. 26 USC 911 – Citizens or Residents of the United States Living Abroad The bona fide residence test asks whether you have genuinely settled abroad for a continuous period that covers a full tax year; occasional trips back to the States do not disqualify you. The physical presence test is mechanical: at least 330 full days in one or more foreign countries during any 12-month period, measured midnight to midnight.
Two limits matter. The exclusion only applies to earned income, so investment income, pensions, and Social Security benefits are not covered. And it does nothing for self-employment tax. If you run a business abroad and your entire profit falls under the exclusion, you still owe the 15.3% self-employment tax on net profits.7Internal Revenue Service. Self-Employment Tax for Businesses Abroad
The Foreign Tax Credit
If you live somewhere with its own income tax, the Foreign Tax Credit gives you a dollar-for-dollar offset against your U.S. bill for income taxes you paid to the foreign government.8Internal Revenue Service. Foreign Tax Credit You generally cannot use the exclusion and the credit on the same dollars of income, so most people pick whichever saves more. The credit usually wins in high-tax countries, because it can zero out the U.S. bill and even generate carryforwards for future years. The exclusion usually wins in low-tax or no-tax countries, because it simply removes the first slice of income from the calculation.
Foreign Housing Exclusion
On top of the earned income exclusion, you can exclude or deduct certain housing costs you pay while living abroad. The general cap on eligible housing expenses is $39,870 for 2026, with higher limits for expensive cities like Tokyo, London, and Hong Kong.5Internal Revenue Service. Figuring the Foreign Earned Income Exclusion Employees claim it as an exclusion when employer-paid or reimbursed; the self-employed claim a deduction when paying out of pocket.9Internal Revenue Service. Foreign Housing Exclusion or Deduction Neither version reduces self-employment tax.
Treaties and Totalization Agreements
The U.S. has bilateral tax treaties with dozens of countries that can reduce or eliminate U.S. tax on specific income types like pensions, dividends, interest, and royalties.10Internal Revenue Service. Tax Treaties Benefits depend on the specific treaty with the country where you live. If no treaty exists, your income is taxed under standard U.S. rules.
Separately, the U.S. has Social Security totalization agreements with about 30 countries, including Canada, the United Kingdom, Germany, Japan, Australia, and France.11Social Security Administration. U.S. International Social Security Agreements These stop you from paying Social Security tax to both countries on the same earnings. If you are self-employed, you can claim an exemption from U.S. self-employment tax by obtaining a certificate of coverage from the foreign system and attaching it to your return; without that certificate, you owe U.S. self-employment tax even if you are also paying into the foreign system.7Internal Revenue Service. Self-Employment Tax for Businesses Abroad
The Forms You Actually File
Returns from abroad start with the same Form 1040 as domestic filers, plus a few extras depending on your situation.4Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad Form 2555 claims the foreign earned income exclusion and the housing exclusion.12Internal Revenue Service. About Form 2555, Foreign Earned Income Form 1116 claims the foreign tax credit; if your total foreign taxes were $300 or less ($600 for joint filers) and all the foreign income was passive, you can skip Form 1116 and claim the credit directly on the 1040.13Internal Revenue Service. Instructions for Form 1116 (2025)
Reporting Your Foreign Accounts
The disclosure rules for foreign accounts sit alongside the income tax and carry penalties that can dwarf anything the tax itself would cost. There are two separate reports.
FBAR
If the combined value of all your foreign bank, brokerage, and mutual fund accounts tops $10,000 at any point in the year, you have to file a Report of Foreign Bank and Financial Accounts with the Financial Crimes Enforcement Network.14Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The threshold is cumulative. Three accounts of $4,000 each puts you over the line. Filing is through FinCEN’s BSA E-Filing System, not with your tax return, due April 15 with an automatic extension to October 15 that needs no separate request.15Financial Crimes Enforcement Network. Due Date for FBARs
Civil penalties for a non-willful violation can reach roughly $16,500 per report. Willful violations run to the greater of about $165,000 or 50% of the account balance, with criminal penalties possible for intentional non-compliance. These numbers adjust for inflation.
Form 8938
Form 8938, filed with your tax return under the Foreign Account Tax Compliance Act, covers a broader range of assets than the FBAR, including foreign stock held directly, foreign partnership interests, and foreign hedge or private equity fund interests.16Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements For Americans living abroad, single or separate filers hit the threshold when specified foreign assets exceed $200,000 on the last day of the year or $300,000 at any point in the year. For joint filers, the figures are $400,000 and $600,000.17Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets
Missing Form 8938 triggers a $10,000 penalty. If you still have not filed 90 days after the IRS sends notice, another $10,000 accrues for every 30-day period, up to $50,000 in additional penalties.18Internal Revenue Service. Instructions for Form 8938 The FBAR and Form 8938 can apply to the same accounts, so many expats file both.
If You’ve Been Abroad and Haven’t Been Filing
Plenty of Americans abroad learn about these obligations years in. The IRS has programs to get you current without the worst penalties if your non-compliance was not intentional. The Streamlined Foreign Offshore Procedures apply to U.S. taxpayers living outside the country whose failure to file was non-willful. You submit the last three years of tax returns and six years of FBARs, with no penalties on the late filings if you qualify.19Internal Revenue Service. Streamlined Filing Compliance Procedures You are ineligible once the IRS has started examining your returns or if you are under criminal investigation.
If your only gap is missed FBARs and you already reported the related income on your tax returns, the Delinquent FBAR Submission Procedures are simpler. You file the late FBARs electronically with a statement explaining why they are late, and the IRS imposes no penalty as long as the related income was properly reported and taxed.20Internal Revenue Service. Delinquent FBAR Submission Procedures
The Only Way to End the Obligation
Moving does not end anything. A U.S. citizen stops owing U.S. tax only by formally renouncing citizenship at a U.S. embassy or consulate. As of April 2026, the State Department fee for processing a renunciation dropped to $450, from the long-standing $2,350.21Federal Register. Schedule of Fees for Consular Services – Fee for Administrative Processing of Request for Certificate of Loss of Nationality of the United States
The administrative fee is the easy part. The IRS treats you as a “covered expatriate” subject to the exit tax if you meet any one of three criteria: your average annual net income tax over the five years before expatriation exceeds an inflation-adjusted threshold ($206,000 for 2025 expatriations, with the 2026 figure not yet published)22Internal Revenue Service. Expatriation Tax; your net worth is $2 million or more on the date you expatriate; or you cannot certify full compliance with all U.S. tax obligations for the five preceding years.23Internal Revenue Service. Instructions for Form 8854 (2025)
If you are a covered expatriate, the exit tax treats all your worldwide assets as if sold the day before you renounce. Net gain above an exclusion amount ($890,000 for 2025, adjusted annually) is taxed as income that year.23Internal Revenue Service. Instructions for Form 8854 (2025) For someone with substantial appreciated real estate, retirement accounts, or stock, that can produce a six- or seven-figure bill on gains never actually realized in cash. Green card holders who held their card for at least eight of the prior 15 years face the same exit tax rules when they formally abandon their status.22Internal Revenue Service. Expatriation Tax Renunciation is irrevocable; you lose the right to live and work in the U.S. without a visa, and regaining citizenship later is extraordinarily difficult.
For most Americans who move abroad, the earned income exclusion, foreign tax credits, and treaty benefits combine to reduce the U.S. tax bill to zero or close to it. The filing obligation is real and permanent. The tax itself is usually smaller than people fear.