Expat Taxes: Complete Guide to Filing US Taxes from Abroad

The United States is one of only two countries in the world that taxes its citizens on worldwide income regardless of where they live. If you are a U.S. citizen or green card holder living abroad, you must file a federal tax return every year — reporting all income earned anywhere in the world. The good news is that several powerful exclusions and credits exist to prevent double taxation. The challenge is understanding which provisions apply to your situation and how to claim them correctly.

Data Notice: Expat and international tax data in “Expat Taxes: Complete Guide to Filing US Taxes from Abroad” reflects 2026 projected IRS rules. Foreign income exclusions, reporting deadlines, and penalty structures change with regulatory updates. Check IRS.gov for current guidance. [expat-taxes-living-abroad]

Tax information in this article on expat taxes: complete guide to filing us taxes from abroad is for educational purposes only and does not constitute tax, legal, or financial advice. Tax laws change, and individual circumstances vary. Consult a qualified tax professional or CPA for guidance specific to your situation.

Who Must File US Taxes from Abroad

The Basic Rule

Every U.S. citizen and green card holder must file a federal income tax return if their income exceeds the filing thresholds — regardless of where they live or where the income was earned. This applies even if:

You have lived outside the U.S. for decades
All your income is earned in a foreign country
You pay taxes to a foreign government
You have no U.S.-source income

Filing Thresholds for 2026

The filing requirements are the same as for domestic taxpayers:

Filing Status	Age	Gross Income Threshold
Single	Under 65	~$15,000
Single	65 or older	~$17,150
Married Filing Jointly	Both under 65	~$30,000
Head of Household	Under 65	~$22,500
Self-employed	Any age	~$400 (net earnings)

Self-employed expats with net earnings of just ~$400 must file, making this a near-universal requirement for working Americans abroad.

Green Card Holders

Green card holders (lawful permanent residents) are taxed as U.S. residents regardless of where they live. Even if you have not lived in the U.S. for years, maintaining a green card means maintaining U.S. tax obligations. Abandoning your green card (surrendering it or having it revoked) triggers an “exit tax” analysis under IRC Section 877A.

The Automatic 2-Month Extension

U.S. citizens and residents living abroad on April 15 automatically receive a two-month extension to file — making the due date June 15 without filing any paperwork. Important caveats:

Interest still accrues from April 15 on any tax owed (the extension is for filing, not paying)
You must attach a statement to your return explaining that you qualified for the automatic extension
You can request an additional extension to October 15 by filing Form 4868 before June 15
Special extensions for taxpayers in combat zones or disaster areas may push the deadline further

For all federal filing deadlines, see our tax filing deadlines guide.

Foreign Earned Income Exclusion (FEIE)

The FEIE is the most widely used provision for reducing U.S. tax on foreign earnings. For 2026, the exclusion is projected at approximately ~$126,500.

What FEIE Covers

Wages and salary earned in a foreign country
Self-employment income earned abroad
Professional fees, commissions, and bonuses
Tips and allowances related to foreign employment

What FEIE Does NOT Cover

Investment income (dividends, interest, capital gains, rental income)
Pension or retirement distributions
U.S. government employee wages (military, federal civilian)
Income earned within the United States

Qualifying Tests

You must meet one of two tests to claim the FEIE:

Physical Presence Test: You must be physically present in a foreign country for at least 330 full days during any 12-month period. Days spent in transit over international waters and partial days in the U.S. do not count as “foreign” days.

Bona Fide Residence Test: You must establish a bona fide residence in a foreign country for an uninterrupted period that includes a full tax year. The IRS looks at factors such as your intent to remain, local ties, housing arrangements, and community integration.

For a detailed walkthrough of both tests, including Form 2555 instructions, see our Foreign Earned Income Exclusion guide.

If you are considering or already living in France, this expat guide on LaFrance covers the practical side of establishing residence abroad.

Foreign Tax Credit (FTC)

The FTC allows you to offset your U.S. tax liability dollar-for-dollar with taxes paid to foreign governments. This is often more valuable than the FEIE for higher earners or those with significant investment income.

How the FTC Works

If you earn ~$200,000 in France and pay ~$50,000 in French income tax, the FTC allows you to reduce your U.S. tax liability by up to ~$50,000. The credit is limited to the U.S. tax attributable to your foreign-source income — you cannot use foreign taxes to offset tax on U.S.-source income.

FTC vs. FEIE: Which Is Better?

Factor	FEIE	FTC
Type of benefit	Exclusion (reduces taxable income)	Credit (reduces tax dollar-for-dollar)
Investment income	Not covered	Covered
High-tax countries	May leave U.S. tax on excluded income	Eliminates or reduces U.S. tax more effectively
Can combine	Yes, but not for the same income	Yes, but not for FEIE-excluded income
Carryback/forward	No	1 year back, 10 years forward

Critical Rule: No Double Benefit

You cannot claim both the FEIE and FTC on the same income. If you exclude ~$126,500 under FEIE, you cannot also claim foreign tax credits on taxes paid on that ~$126,500. However, you can use the FTC for income above the FEIE exclusion amount and for investment income.

Many expats benefit from using both: FEIE for the first ~$126,500 of earned income and FTC for amounts above that threshold and for investment income.

Foreign Housing Exclusion and Deduction

The housing exclusion (for employees) or deduction (for self-employed) allows you to exclude or deduct qualifying housing expenses above a base amount.

Qualifying Housing Expenses

Rent or fair rental value of employer-provided housing
Utilities (except telephone)
Property insurance
Residential parking
Furniture rental

Calculation

Base housing amount: 16% of the FEIE limit, prorated daily (~$20,240 for a full year in 2026)
Maximum housing amount: Varies by location — high-cost cities like London, Tokyo, and Hong Kong have higher caps
Deductible/excludable amount: Actual qualifying expenses minus the base, up to the location-based maximum

FBAR: Foreign Bank Account Reporting

If you have financial accounts in foreign countries with an aggregate balance exceeding $10,000 at any point during the year, you must file FinCEN Form 114 — the Report of Foreign Bank and Financial Accounts (FBAR).

Key FBAR Details

Due date: April 15 with an automatic extension to October 15
Filed separately: The FBAR is filed with FinCEN (Financial Crimes Enforcement Network), not the IRS, through the BSA E-Filing System
Accounts covered: Bank accounts, brokerage accounts, mutual funds, retirement accounts, and any financial account where you have signature authority
Penalties: Failure to file can result in civil penalties of up to ~$10,000 per violation (non-willful) or the greater of ~$100,000 or 50% of the account balance (willful)

FBAR vs. FATCA (Form 8938)

Feature	FBAR (FinCEN 114)	FATCA (Form 8938)
Filing threshold (single, abroad)	$10,000 aggregate balance	~$200,000 (end of year) or ~$300,000 (during year)
Filed with	FinCEN (online)	IRS (attached to tax return)
Covered assets	Financial accounts only	Financial accounts + certain other foreign assets
Penalties	Up to 50% of balance	Up to ~$10,000 per violation
Due date	April 15 (auto-extension to Oct 15)	With tax return

Many expats must file both the FBAR and Form 8938. The thresholds and asset categories differ, so qualifying for one does not automatically mean you qualify for (or are exempt from) the other.

For detailed guidance on FBAR and FATCA requirements, see our expat tax guide.

Tax Treaty Benefits

The United States has income tax treaties with more than 60 countries. These treaties can:

Reduce withholding rates on dividends, interest, and royalties
Exempt certain income (such as pensions or government wages) from taxation in one country
Provide tiebreaker rules for determining tax residency when both countries claim you as a resident
Allow credits for taxes paid to the treaty partner

How to Claim Treaty Benefits

Report treaty-based positions on Form 8833 (Treaty-Based Return Position Disclosure). Failing to disclose a treaty-based position can result in a ~$1,000 penalty per failure.

Common Treaty Provisions

Teachers and researchers: Many treaties exempt income earned by visiting teachers and researchers for 2–3 years
Students: Scholarships and grants may be exempt under treaty provisions
Pensions: Some treaties exempt foreign government pensions from U.S. tax
Social Security totalization agreements: Prevent double social security taxation for workers splitting careers between countries

Streamlined Filing Compliance for Late Filers

If you are behind on U.S. tax filings, the IRS offers the Streamlined Filing Compliance Procedures for taxpayers whose failure was non-willful (not intentional):

What It Requires

File 3 years of delinquent tax returns
File 6 years of delinquent FBARs
Submit a statement certifying the failure was not willful
Pay any tax and interest due

What You Get

No penalties for the delinquent filings (for taxpayers who qualify as “foreign filers”)
No criminal prosecution (for non-willful violations)
A clean slate with the IRS going forward

This program has helped thousands of expats come into compliance. However, if your failure was willful, the streamlined procedures do not apply, and you should consult a tax attorney before taking any action.

Self-Employed Expats

Self-employed Americans abroad face additional complexity:

Self-Employment Tax

The FEIE does not exclude income from self-employment tax. Even if you exclude ~$126,500 from income tax, you still owe self-employment tax (Social Security and Medicare, ~15.3%) on your net earnings — unless a totalization agreement with your country of residence exempts you.

Schedule C Filing

Report self-employment income on Schedule C. See our Schedule C business income guide for detailed instructions on deductions available to self-employed taxpayers.

Estimated Tax Payments

Self-employed expats must make quarterly estimated tax payments (Form 1040-ES) if they expect to owe ~$1,000 or more. Payments can be made online from abroad through IRS Direct Pay or EFTPS.

State Tax Obligations

Moving abroad does not automatically end state tax obligations. Some states continue to tax former residents:

California: May tax you as a resident if you maintain “domicile” in the state
New York: Requires clear evidence of domicile change
Virginia, New Mexico, South Carolina: Have residency rules that can trap expats

Other states (Texas, Florida, Nevada, Washington) have no income tax, making them popular “last states of residence” before moving abroad.

Frequently Asked Questions

Can I renounce my citizenship to avoid U.S. taxes?

Technically yes, but renunciation triggers an “exit tax” under IRC Section 877A. If you are a “covered expatriate” (net worth over ~$2 million, average annual tax liability over ~$190,000, or failure to certify five years of tax compliance), you are treated as having sold all assets at fair market value on the day before renunciation. This can create a substantial tax bill.

Do I have to file a state return if I live abroad?

It depends on your last state of residence. States with income taxes have varying rules — some treat you as a non-resident once you leave, others maintain residency until you establish domicile elsewhere. Check your specific state’s rules.

What currency do I use to report foreign income?

All amounts must be reported in U.S. dollars. Use the yearly average exchange rate published by the IRS for income and expenses, and the spot rate on the transaction date for specific items (such as property sales).

Can I contribute to a U.S. retirement account while living abroad?

If you exclude all your foreign earned income under the FEIE, you may have no “compensation” for purposes of IRA contributions. However, if you have income above the FEIE amount or choose the FTC instead, you can contribute to IRAs and other retirement accounts based on your remaining taxable earned income.

What if I am married to a non-U.S. citizen?

Your spouse is not required to file U.S. taxes unless they are a green card holder or elect to be treated as a U.S. resident. You can file as Married Filing Separately or elect to file jointly (which requires your spouse to report worldwide income and obtain an ITIN). The election to file jointly is often beneficial for claiming credits and deductions.

Key Takeaways

Every U.S. citizen and green card holder must file federal taxes regardless of where they live. The FEIE (~$126,500 exclusion), FTC (dollar-for-dollar credit), and housing exclusion/deduction are the primary tools for preventing double taxation. FBAR and FATCA reporting requirements apply to foreign financial accounts above specified thresholds. Tax treaties provide additional relief. If you have fallen behind, the Streamlined Filing Compliance Procedures offer a path back to compliance without penalties. Expat tax planning is complex — professional guidance from an expat tax specialist is strongly recommended.

This article is for informational purposes only and does not constitute tax, legal, or immigration advice. Tax laws change frequently. Consult a qualified tax professional before making decisions based on this information.