If you move abroad, you still have to pay US taxes. US citizenship and permanent residency come with a worldwide tax obligation, so the IRS expects an annual return from you whether you live in Ohio or Osaka. The United States is one of only two countries that taxes based on citizenship rather than residence, and that obligation follows you until your income falls below the filing thresholds or you formally give up your status. Several tools exist to prevent double taxation, and most expats end up owing little or nothing, but none of them excuse you from filing.
Filing Thresholds and Deadlines Abroad
Your obligation to file depends on how much you earn worldwide, not where you earn it. 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, hits the threshold at $32,200.1Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Married individuals filing separately face a threshold of just $5. Anyone with net self-employment earnings of $400 or more must also file, regardless of total income.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
Living abroad buys you extra 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 Form 4868 pushes that further to October 15. The catch that trips people up every year: the extension covers your paperwork, not your payment. Interest on any unpaid balance runs from April 15 regardless.4Internal Revenue Service. U.S. Citizens and Resident Aliens Abroad If you expect to owe, pay an estimate by April 15 to stop the interest clock.
How Expats Actually Reduce the US Tax Bill
Filing is required, but paying often is not. Three tools do most of the work, and treaties fill in around the edges.
The Foreign Earned Income Exclusion lets you exclude up to $132,900 of foreign wages or self-employment income from US tax for 2026.5Internal Revenue Service. Figuring the Foreign Earned Income Exclusion The amount adjusts for inflation each year, and spouses who both qualify each claim the full amount on their own earnings. To qualify, your tax home has to be in a foreign country and you must 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: you’ve been a genuine resident of a foreign country for a continuous period that includes a full tax year. Occasional trips home don’t disqualify you, but the IRS looks at whether you actually settled abroad.
- The physical presence test: you were physically in one or more foreign countries for at least 330 full days during any 12-month period. A full day runs midnight to midnight, so travel days between the US and a foreign country usually don’t count.
The exclusion applies only to earned income. Investment income, pensions, and Social Security benefits are not covered. You claim it on Form 2555.7Internal Revenue Service. About Form 2555, Foreign Earned Income
The Foreign Tax Credit gives you a dollar-for-dollar offset against your US tax bill for income taxes paid to a foreign government.8Internal Revenue Service. Foreign Tax Credit It’s claimed on Form 1116, though if your total foreign taxes were $300 or less ($600 for joint filers) and all foreign income was passive, you can claim it directly on your 1040 without the form.9Internal Revenue Service. Instructions for Form 1116 (2025) You generally cannot use the credit and the exclusion on the same dollars of income, so most expats pick whichever saves more. The credit tends to win in high-tax countries because it can zero out the US bill and generate carryforwards; the exclusion tends to win in low-tax or no-tax countries.
The Foreign Housing Exclusion or Deduction sits on top of the earned income exclusion. For 2026, the general cap on eligible housing expenses is $39,870, and the IRS publishes higher limits for expensive cities like Tokyo, London, and Hong Kong.5Internal Revenue Service. Figuring the Foreign Earned Income Exclusion Your actual benefit is what you spend above a base amount (roughly 16% of the earned income exclusion) and below the cap. Employees claim an exclusion; the self-employed claim a deduction.10Internal Revenue Service. Foreign Housing Exclusion or Deduction
Tax treaties with dozens of countries can further reduce or eliminate US tax on pensions, dividends, interest, and royalties, but benefits vary by country and income type.11Internal Revenue Service. Tax Treaties If no treaty exists with your country of residence, standard US rules apply.
Self-Employment Tax Still Applies
None of the tools above reduce US self-employment tax. Even if the exclusion wipes out your income tax entirely, you still owe the 15.3% self-employment tax on your net business profits.12Internal Revenue Service. Self-Employment Tax for Businesses Abroad
The one way out is a totalization agreement. The US has Social Security agreements with about 30 countries, including Canada, the United Kingdom, Germany, Japan, Australia, and France, to prevent double Social Security contributions.13Social Security Administration. U.S. International Social Security Agreements If you’re self-employed in one of those countries, you can obtain a certificate of coverage from the foreign social security agency and attach it to your US return to claim exemption from self-employment tax.12Internal Revenue Service. Self-Employment Tax for Businesses Abroad Without that certificate, you owe US self-employment tax even if you’re paying into the foreign system.
Foreign Account Reporting on Top of Taxes
Filing US taxes from abroad usually pulls in two extra disclosures that have nothing to do with what you owe. The penalties on these are often steeper than the tax itself.
The FBAR (FinCEN Form 114) is required if the combined value of your foreign bank accounts, brokerage accounts, and mutual funds exceeds $10,000 at any point during the year.14Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The threshold is cumulative: three accounts holding $4,000 each puts you over. You file it 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 request.15Financial Crimes Enforcement Network. Due Date for FBARs A non-willful violation can bring a civil penalty of roughly $16,500 per report; willful violations jump to the greater of about $165,000 or 50% of the account balance, with criminal penalties possible.
Form 8938 is filed with your tax return under the Foreign Account Tax Compliance Act, and it covers a broader range of assets than the FBAR, including directly held foreign stock, partnership interests, and hedge or private equity fund interests.16Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements Thresholds are higher for Americans living abroad. Single filers or married filing separately: $200,000 on the last day of the year or $300,000 at any point during the year. Joint filers: $400,000 and $600,000.17Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets Failing to file triggers a $10,000 penalty, with additional $10,000 penalties for continued non-compliance up to $50,000 more.18Internal Revenue Service. Instructions for Form 8938 Both forms can apply to the same accounts, so many expats file both.
If You Haven’t Been Filing
Plenty of Americans abroad discover the filing obligation years after they should have started. The IRS runs programs to get back into compliance without the harshest penalties, provided the failure wasn’t intentional.
The Streamlined Foreign Offshore Procedures apply to US taxpayers living outside the country whose non-compliance was non-willful. You file the last three years of tax returns and six years of FBARs, and no penalties apply to those late filings if you qualify.19Internal Revenue Service. Streamlined Filing Compliance Procedures You lose eligibility once the IRS has started an examination or a criminal investigation.
If your only issue is missed FBARs and you already reported the related income, the Delinquent FBAR Submission Procedures are simpler. You file the late FBARs through FinCEN with a statement explaining the delay, and the IRS won’t impose a penalty as long as the income was properly reported and taxed.20Internal Revenue Service. Delinquent FBAR Submission Procedures
The Only Way to Stop Owing US Tax
Moving abroad doesn’t end the obligation. For a US citizen, the only permanent exit is to formally renounce citizenship at a US embassy or consulate. As of April 2026, the State Department fee for processing a renunciation is $450, down 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 fee is the easy part. The IRS classifies you as a “covered expatriate” subject to an exit tax if any one of these applies:
- Your average annual net income tax over the five years before expatriation exceeds an inflation-adjusted threshold ($206,000 for 2025 expatriations; the 2026 figure had not been published at the time of writing).22Internal Revenue Service. Expatriation Tax
- Your net worth is $2 million or more on the date you expatriate.
- You cannot certify full compliance with all US tax obligations for the five preceding years.23Internal Revenue Service. Instructions for Form 8854 (2025)
If you’re a covered expatriate, the exit tax treats all your worldwide assets as 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) Deferred compensation and certain retirement account distributions face special rules even after expatriation. Green card holders who held their card for at least eight of the prior 15 years face the same exit tax rules when they abandon their status.22Internal Revenue Service. Expatriation Tax
Renunciation is irrevocable, and it strips your right to live and work in the US without a visa. For most Americans abroad, the combination of the earned income exclusion, foreign tax credit, and treaty benefits already reduces the actual US tax bill to zero or close to it. The filing obligation is real and permanent. The tax itself is often smaller than people fear.