How to file taxes as a US citizen living abroad: a step-by-step guide

Yes, US citizens living abroad are required to file a US federal tax return. But here's what most guides skip past too quickly: the majority of expats owe little or no additional US tax once the available exclusions and credits are applied. The filing obligation is real. The tax bill usually isn't.

The reason most people find this process complicated is not the tax itself. It's not knowing the sequence of which decision comes first, which forms go where, and what the FBAR has to do with your tax return (the answer is nothing: it's a separate filing entirely).

This guide walks through the process in the order you actually need to do it, using 2026 figures throughout.

Does a US citizen living abroad have to pay taxes?

Yes,  and the distinction between filing and paying matters here.

The US uses citizenship-based taxation. Every US citizen is required to file a federal tax return and report worldwide income, regardless of where they live. This applies whether you've been abroad for one year or twenty. It's one of only two countries in the world that works this way (the other being Eritrea), and it surprises many Americans who assumed that paying taxes in their country of residence was sufficient.

For the 2026 tax year, a federal return is required if gross income exceeds $16,100 for single filers or $32,200 for married filing jointly.

The practical reassurance: filing and owing are different things. Most expats owe zero or minimal US tax because the Foreign Earned Income Exclusion and Foreign Tax Credit are specifically designed to eliminate double taxation on foreign-earned income. The filing obligation remains regardless, but for most people living abroad and earning in their country of residence, the return results in little or no additional tax owed.

Note also that FBAR (the Report of Foreign Bank and Financial Accounts) may apply even if your income is below the filing threshold. If your foreign account balances exceeded $10,000 at any point during the year, FBAR is required regardless of income or tax liability.

• Guide to taxes on American citizens living abroad 
• What happens if you don't file US taxes while living abroad

Deadlines and extensions for Americans living abroad

April 15 is the standard US tax return deadline. It is also the FBAR deadline.

June 15 is the automatic extension available specifically to US citizens living outside the US and Puerto Rico. No form is required; the extension applies automatically based on your foreign residence. This gives you two additional months to file without any action on your part.

Critical caveat: the June 15 extension is an extension to file, not an extension to pay. If you owe tax, interest begins accruing from April 15 regardless of when you file. Any tax owed should be estimated and paid by April 15 to avoid interest charges. The failure-to-pay penalty (0.5% per month) is significantly lower than the failure-to-file penalty (5% per month), so if you owe and can't pay in full, file on time and pay what you can.

October 15 is available as a further extension if Form 4868 is filed by June 15. This extends the filing deadline to October 15. The FBAR automatically extends to October 15 as well, no separate FBAR extension request is needed.

• What happens if you don't file US taxes while living abroad

Step 1: Decide between FEIE and the Foreign Tax Credit

This is the first filing decision and the one that shapes everything that follows. Most guides present it too late, after the documents and forms sections. In practice, the strategy choice determines which forms you need, which qualifying tests you must meet, and how you structure the return. Make this decision first.

The Foreign Earned Income Exclusion (FEIE)

The FEIE excludes up to $132,900 of foreign earned income from US taxable income for the 2026 tax year. If both spouses qualify, they can each exclude up to $132,900 - $265,800 combined.

The FEIE is claimed via Form 2555 and requires meeting one of two qualifying tests:

Bona Fide Residence Test: you are a legal resident of a foreign country for an uninterrupted period that includes an entire tax year. This typically means you hold a long-term visa or residence permit in your country of residence.

Physical Presence Test: you are physically present in a foreign country for at least 330 full days in any consecutive 12-month period. The 330 days don't need to be in the same country, any combination of foreign countries counts.

In addition to the income exclusion, the foreign housing exclusion allows you to exclude qualifying housing expenses above a base amount. For 2026, the maximum housing exclusion is $39,870, which covering rent, utilities (excluding telephone), and renter's insurance above the IRS base amount. This is claimed on Form 2555 Part VI and requires meeting the same qualifying test as the FEIE. For expats in high-cost cities such as London, Zurich, Singapore, and Tokyo the housing exclusion can meaningfully reduce taxable income beyond what the main FEIE covers.

The FEIE election is not automatic. You must formally elect it on Form 2555 the first time you claim it. Once made, the election remains in effect for future years unless revoked. Revoking carries a consequence: a 5-year waiting period before you can re-elect FEIE. This makes the initial choice significant, particularly if you're considering switching between FEIE and FTC in future years.

The FEIE self-employment tax trap: the exclusion removes foreign earned income from US income tax, but not from self-employment tax. Even if all of your SE income is excluded under FEIE, self-employment tax (15.3% on net SE income) still applies. This surprises many freelancers and remote workers and is one of the most commonly missed items in expat filings.

The Foreign Tax Credit (FTC)

The FTC reduces your US tax dollar-for-dollar by the amount of foreign income tax already paid. It is claimed via Form 1116 and has no day-count or residency test; it simply credits what you've already paid abroad against what you would otherwise owe the US.

The FTC is generally the better option for people in high-tax countries like Germany, France, the UK and Scandinavia where foreign taxes paid exceed or equal the would-be US tax liability. In those countries, the credit typically wipes out US tax entirely.

The FTC and FEIE can be used together, on different income. FEIE on foreign earned income; FTC on investment income, rental income, or other income types not excluded by FEIE. They cannot apply to the same dollar of income.

The decision in plain language

• Low-tax or no-tax country (UAE, Georgia, Panama): FEIE usually better, eliminates the tax directly without needing foreign taxes paid to credit
• High-tax country (Germany, France, UK): FTC usually better, foreign taxes paid likely exceed US liability, so the credit eliminates the bill entirely
• Self-employed: neither FEIE nor FTC reduces self-employment tax, this is a calculation that requires professional modeling
• Multiple income sources or countries: professional advice before choosing; the wrong election can be costly to unwind

Foreign Earned Income Exclusion guide

FEIE vs Foreign Tax Credit

Step 2: Gather your documents

Income documents:

• W-2 from any US employer
• 1099s from US clients or platforms
• Foreign income statements: payslips, employer letters, bank statements showing salary deposits; a summary letter from the employer in English is acceptable if official payslips are not in English
• Self-employment income records: invoices, payment platform records (PayPal, Wise, Stripe)
• Investment income: dividend and capital gains statements from any brokerage, US or foreign
• Rental income records if applicable

Filing and identity documents:

• Prior year US tax return: establishes carryforwards, prior FEIE elections, prior addresses
• Social Security numbers for all family members being claimed
• Foreign tax identification number from country of residence if claiming FTC

Foreign account information (for FBAR and Form 8938):

• Account numbers and institution names for all foreign financial accounts
• Highest balance during the year for each account
• Year-end balance for each account
• Maximum aggregate balance across all accounts to confirm whether the $10,000 FBAR threshold or the $200,000 FATCA threshold was exceeded

FBAR for American expats

FATCA for American expats

Step 3: Choose how to file

DIY expat tax software

Best for: straightforward situations like single country of residence, employed (not self-employed), no rental or investment income, no state tax complications.

Expatfile is purpose-built for US expats and handles Form 2555, FBAR coordination, and foreign address situations cleanly. 

MyExpatTaxes covers similar ground and is well-regarded for W-2 or single-source income situations. 

TurboTax handles FEIE but is not optimized for complex expat situations and lacks integrated FBAR support.

Read also: Best tax software for US expats

Expat-specialist CPA

Best for: self-employed or freelance income abroad, multiple countries in one tax year, rental income, foreign business ownership, state tax complications, investment income with complex FTC calculations, or anyone filing from abroad for the first time who wants confidence in the result.

The cost of a qualified expat CPA, typically $300–$800 for a straightforward expat return, is almost always less than the cost of a missed election, a wrong FEIE/FTC choice, or an unfiled FBAR that triggers penalties later. For a first-year filer especially, professional review of the initial election pays for itself in future years.

Brief decision guide:

• Employed abroad, one country, simple finances - software
• Self-employed, multiple countries, complex - CPA
• Unsure whether FEIE or FTC is better for your situation - CPA
• First year filing from abroad - strongly consider CPA

Step 4: File the return and don't forget FBAR

The tax return package, filed with the IRS

• Form 1040 the main return; filed by April 15 (or June 15 / October 15 with extension)
• Form 2555 attach to Form 1040 if claiming FEIE or housing exclusion
• Form 1116 attach to Form 1040 if claiming Foreign Tax Credit
• Form 8938 attach to Form 1040 if FATCA thresholds are met: $200,000 at year-end or $300,000 at any point during the year (for expats living abroad)
• Schedule SE if self-employed; SE tax applies even with FEIE
• Schedule B if interest or dividends received; Part III includes a foreign account disclosure question that must be answered even if the FBAR threshold isn't crossed

E-filing is strongly recommended, faster processing, immediate confirmation, and eliminates paper filing errors and lost return risk.

FBAR, filed separately with FinCEN, not the IRS

This is the most common expat filing confusion. The FBAR (FinCEN 114) is not part of your tax return. It is not filed with the IRS. It is filed electronically with the Financial Crimes Enforcement Network via the BSA E-Filing System, a separate government portal.

FBAR is required if aggregate foreign financial account balances exceeded $10,000 at any point during the calendar year. The threshold aggregates all accounts; a checking account with $7,000 and a savings account with $4,000 = $11,000 aggregate, triggering the requirement.

FBAR is due April 15 with an automatic extension to October 15. No separate extension request is needed. There is no paper filing option; FBAR must be submitted electronically.

Penalty for non-wilful failure to file: up to $16,536 per annual report for 2026. These penalties apply regardless of whether any tax was owed; FBAR is a reporting obligation independent of tax liability.

FBAR for American expats

Special situations that complicate expat filing

• Self-employment income abroad. FEIE excludes SE income from US income tax, but not from self-employment tax. SE tax is 15.3% of net SE income and is not reduced by FEIE or FTC. Totalization agreements with some countries (Germany, the UK, France, and others) may eliminate SE tax, check whether your country of residence has one with the US before paying SE tax you may not owe.
• Multiple countries in one year. The Physical Presence Test counts days in any foreign country; they don't need to be the same country. The Bona Fide Residence Test requires legal residency in one specific country for a full tax year. Moving mid-year can affect which test you qualify for and complicate the FEIE election.
• Rental income from abroad. Report on Schedule E; depreciation follows US rules regardless of local rules. Foreign tax paid on rental income may be creditable via Form 1116.
• Foreign business ownership. Owning a foreign corporation may require Form 5471; the penalty for non-filing starts at $10,000 per year. Foreign partnership interests may require Form 8865. Both are complex and require professional assistance. PFIC tax guide
• State tax obligations. Federal filing is only part of the picture. Expats who haven't properly changed domicile may still owe state income tax. California, New York, and Virginia in particular assert residency aggressively even after departure. 

Do expats pay state taxes?

Do I owe state income tax if I live abroad?

Frequently asked questions

Do I owe US tax if I earn less than the FEIE limit? 

Probably not on foreign earned income, but investment income, US-source income, and self-employment tax are not excluded by FEIE. You still need to file a return even if you owe nothing; the filing obligation and the tax obligation are separate.

Can I use both FEIE and Foreign Tax Credit? 

Yes, on different income. FEIE on foreign earned income; FTC on investment income, rental income, or income types not excluded by FEIE. They cannot both apply to the same dollar of income. FEIE vs Foreign Tax Credit

What if I miss the June 15 deadline? 

File as soon as possible. If you owe nothing, because FEIE or FTC eliminates the liability, the failure-to-file penalty is $0. If you owe tax, the 5% per month failure-to-file penalty accrues from the deadline date. What happens if you don't file

Does FBAR apply even if I owe no US tax? 

Yes. FBAR is a reporting requirement entirely independent of tax liability. If aggregate foreign account balances exceeded $10,000 at any point during the year, FBAR is required regardless of income level or whether any tax is owed. FBAR for American expats

What if I only have a foreign employer and no US income? 

You still file Form 1040 and report your foreign salary, then claim FEIE via Form 2555 or FTC via Form 1116 to reduce or eliminate US tax on that income.

My spouse is not a US citizen, how does that affect my filing? You generally file as Married Filing Separately unless you make an election to treat the non-citizen spouse as a US resident for tax purposes. This election has significant, permanent implications and requires professional advice before making it.

Conclusion

SavvyNomad's tax filing service for Americans abroad covers the full return: FEIE or FTC strategy, Form 2555 or 1116, housing exclusion calculation, FBAR coordination, and ongoing compliance support so nothing falls through the cracks year after year.