The American’s Complete Tax Guide to Living Abroad (2026)

Working remotely? See our Best Digital Nomad Visas for Americans (2026) — Portugal D8, Spain, Mexico, UAE and more, ranked.

Thinking France? Read our Retiring in France for Americans guide — long-stay visa, PUMA healthcare, and the US-France treaty.

Considering the UK? See our Moving to the UK from the USA guide — visas, NHS, banking with FATCA, and the US-UK tax overlap.

Picking the right tax tool? Read FEIE vs Foreign Tax Credit for Americans in 2026 — decision framework, worked examples, and the 5-year lockout most people miss.

Do not skip the reporting traps. Read our deep-dive on FBAR and the California exit-tax trap — the two filings that cost careless expats the most.

Tax planning for Canada? See our deep-dive on U.S. vs Canada taxes for Americans in 2026 — treaty mechanics, RRSP/401(k), and the deemed-disposition exit tax.

If you’re an American living abroad — or planning to move — you’ve probably heard the scary version: “The U.S. taxes your worldwide income no matter where you live, forever, even if you renounce.” Unlike almost every other country in the world, the United States taxes its citizens based on citizenship, not residency. The only other country that does this is Eritrea.

The reality is less scary than the headlines, but the bureaucracy is real. Get it wrong and you can face $10,000+ penalties, blocked bank accounts, and IRS collection actions even while sipping coffee in Lisbon. Get it right and most Americans abroad legitimately pay less total tax than they would at home, thanks to the Foreign Earned Income Exclusion, Foreign Tax Credit, and strategic use of treaty benefits.

This guide is the complete walkthrough of how U.S. taxes work for Americans abroad in 2026 — what you still owe, what you can exclude, how to avoid double taxation, which forms to file, and the most common mistakes that cost Americans thousands of dollars a year.

Quick disclaimer: this is educational content, not personal tax advice. Your specific situation may vary — for material decisions, always work with a U.S. CPA who specializes in expat clients.

The one rule that breaks everyone’s assumptions

As a U.S. citizen or Green Card holder, you must file a U.S. federal tax return every year, on your worldwide income, regardless of where you live.

This is the single most important thing to understand. It doesn’t matter if:

• You haven’t set foot in the U.S. for 10 years
• You pay full taxes in your country of residence
• You earn all your income abroad, in foreign currency, from non-U.S. sources
• You’ve “renounced your residency” for state tax purposes

You still owe the IRS a return. The good news: you usually won’t owe much — or anything — thanks to the tools below. But you must file.

The Foreign Earned Income Exclusion (FEIE)

The FEIE is the single most important tax break available to Americans abroad. For tax year 2026, it lets you exclude up to $132,900 of foreign-earned income per person (per IRS Rev. Proc. 2025-32, October 2025). A married couple both working abroad can exclude up to ~$265,800 combined.

Who qualifies for the FEIE

You must meet one of two tests:

1. Bona Fide Residence Test. You’re a bona fide resident of a foreign country for an uninterrupted period that includes an entire tax year. You have to actually live there with genuine ties (rental contract, utility bills, local driver’s license, etc.). Short trips back to the U.S. are fine as long as you keep your primary residence abroad.

2. Physical Presence Test. You’re physically present in a foreign country (or countries) for at least 330 full days during any consecutive 12-month period. This is the more common test for newly-arrived expats because it doesn’t require a full calendar tax year of residency.

Either test is fine — you just need one.

What counts as “foreign-earned income”

• Salary or wages paid for work performed abroad (regardless of who pays — even a U.S. employer)
• Self-employment income earned while physically abroad
• Bonuses and commissions earned abroad
• Some professional fees

What does NOT count (important)

• Dividends, interest, capital gains (these are “unearned income”)
• Social Security benefits
• Pensions and 401(k) / IRA distributions
• Rental income
• Alimony
• Work performed while in the U.S. on trips home (even if paid by a foreign employer)

If most of your income is passive (retirement accounts, investments, rentals), the FEIE won’t help much — you need the Foreign Tax Credit instead.

How to claim the FEIE

You file Form 2555 with your Form 1040. It’s straightforward but unforgiving — miss a day of travel or miscategorize “U.S. days” and you could forfeit the entire exclusion for that year. Use a tracker (Apple Shortcuts, TripIt) to log U.S. entries/exits precisely.

The Foreign Tax Credit (FTC) — the FEIE’s smarter cousin

If you pay income tax to a foreign government, the Foreign Tax Credit (Form 1116) lets you credit those taxes dollar-for-dollar against your U.S. tax liability. For most Americans living in high-tax countries (Spain, France, Germany, Canada, UK), the FTC wipes out U.S. tax entirely, with foreign tax left over as “carryover credit” you can use in future years.

FEIE vs. FTC — which should you use?

Broad rule of thumb:

• Low-tax country (Mexico, Panama, UAE, Thailand, Portugal under IFICI): use FEIE — your foreign tax is low, so FTC wouldn’t cover much
• High-tax country (Spain, France, Germany, Italy, UK): use FTC — foreign tax already exceeds U.S. tax, so FTC is more efficient and doesn’t limit you to $132,900
• Mixed income (some wages, some dividends): often you combine — FEIE on wages, FTC on passive income

Running both scenarios is a standard exercise your tax preparer should do every year. Don’t lock into one approach forever — the math shifts as your income mix and foreign tax rates change.

The “stacking rule” trap

If you claim the FEIE and earn above the exclusion amount, the excess is taxed at your marginal rate as if the FEIE amount were still counted in your income — this is called “stacking.” So earning $150K abroad doesn’t mean your first $132,900 is free and the rest starts at 10%. The rest actually starts at the bracket where $132,900 lands. This surprises a lot of people.

FBAR — The report everyone forgets (and shouldn’t)

FBAR (Foreign Bank Account Report, officially FinCEN Form 114) is separate from your tax return. It’s a disclosure, not a tax. But it carries the harshest penalties in the entire U.S. expat tax code.

Who must file FBAR

Any U.S. citizen or resident with signature authority or financial interest in one or more foreign financial accounts totaling over $10,000 USD at any point during the calendar year.

Read that carefully. “At any point” — if your balances ever touched $10,001 combined, even for a day, you must file. “Signature authority” — if you can sign on your company’s foreign bank account, you must file, even if it’s not your money. “Foreign” — anything non-U.S., including crypto exchanges based abroad, foreign brokerage accounts, and pension accounts in some cases.

Penalties for missing FBAR

• Non-willful: $10,000 statutory cap, inflation-adjusted to approximately $16,536 per violation per year for 2026 (per FinCEN’s January 2025 inflation adjustment). Under Bittner v. United States (2023), the non-willful cap applies per FBAR form, not per account.
• Willful: the greater of $100,000 or 50% of the account balance, per year
• Criminal: up to $500,000 and 10 years in prison (rarely pursued, but on the books)

FBAR is filed electronically via the BSA E-Filing system by April 15 (automatic extension to October 15 for expats). There’s no fee to file. Just do it.

FATCA — The bank-account killer

FATCA (Foreign Account Tax Compliance Act) is the reason foreign banks reject American customers. Passed in 2010, FATCA requires foreign financial institutions to report U.S.-account-holder balances to the IRS, or face 30% withholding on their U.S. investments. The compliance cost is so high that many smaller banks in Europe, Latin America, and Asia simply refuse to open accounts for Americans.

Form 8938 — when you personally must file

In addition to FBAR, Americans abroad with higher asset levels must file Form 8938 with their tax return. Thresholds for Americans living abroad (2026):

• Single: $200,000 on last day OR $300,000 at any time during the year
• Married filing jointly: $400,000 on last day OR $600,000 at any time

Form 8938 is broader than FBAR — it covers foreign stocks, bonds, and some insurance products, not just bank accounts. You may have to file both FBAR and 8938 for the same assets.

Why foreign banks reject you — and what to do

If you’re told “we don’t accept American customers” by a foreign bank, it’s FATCA. Workarounds:

• Try FATCA-friendly banks. In Portugal: ActivoBank, Millennium BCP, Novo Banco. In Spain: Sabadell, Santander (some branches). In Mexico: Monex, Citibanamex. In France: BNP Paribas (some branches). (Current as of 2026 — bank policies on U.S. persons change frequently and vary by branch and product. Verify directly with the specific branch before traveling.)
• Use fintech. Wise, Revolut, N26 (selectively) accept Americans.
• Schwab International — a U.S. account that works abroad, reimburses ATM fees globally, and dodges many FATCA issues.
• Interactive Brokers — best for investing as an American abroad; accepts U.S. citizens in virtually every country.

State taxes — the sneaky one

Federal taxes are the headline, but state taxes can bite you for years after you leave. Your last U.S. state of residence matters enormously.

The “sticky” states (they’ll chase you)

• California — will argue you’re still a resident unless you establish clear domicile abroad and cut every tie
• New York — similar aggressive posture, especially for high earners
• New Mexico — tricky for retirees with pension income
• South Carolina — retains taxation rights on pensions even for former residents
• Virginia — pursues former residents aggressively

The “clean exit” states

• Florida, Texas, Tennessee, Nevada, South Dakota, Washington, Wyoming, Alaska — no state income tax, clean exit
• Pennsylvania — doesn’t tax many retirement accounts
• Illinois — doesn’t tax most retirement income

How to establish a clean state exit

Before you move abroad, if you’re leaving a “sticky” state, complete a proactive domicile change:

• Register a new U.S. address in a clean-exit state (mail forwarding services like St. Brendan’s Isle, Traveling Mailbox, Escapees RV Club)
• Change your driver’s license to that state before you leave
• Register to vote there
• Update your passport address
• Close bank accounts in your old state (or move them to national chains)
• Cancel state professional licenses if applicable
• File a final part-year return clearly marking your departure

For retirees with pension income or property in California/New York, work with a state-tax-specialized CPA before you move. Getting this wrong can cost $10,000–$50,000 over several years.

Social Security, pensions, and retirement accounts

Social Security abroad

You can receive U.S. Social Security benefits in most countries — including Spain, Portugal, Mexico, France, Italy, Germany, UK, Canada, Ireland, Australia, Japan. You can’t receive them in a handful of restricted countries (Cuba, North Korea, and a few others).

Social Security benefits are always taxable by the U.S. (if your total income exceeds thresholds), and tax treaty rules may mean they’re taxable only in the U.S. — check the specific treaty for your country. For Portugal: only taxable in the U.S. For Spain: taxable in Spain.

Totalization agreements

Totalization agreements prevent double Social Security taxation. The U.S. has them with 30+ countries including all major European destinations, Canada, and Japan. If you’re employed abroad and covered by that country’s social security system, you’re exempt from U.S. Social Security/Medicare taxes — and vice versa.

401(k) and IRA distributions abroad

Distributions from U.S. retirement accounts are always taxable by the U.S. and may also be taxable by your country of residence (depending on treaty). Foreign Tax Credit usually prevents double taxation, but there are landmines:

• Many European countries tax distributions differently from the U.S. — you might owe tax in both places at different times
• Some countries treat Roth IRAs as fully taxable because the Roth structure isn’t recognized
• Early withdrawal penalties still apply under U.S. rules, even if your foreign country doesn’t have them

Before starting distributions, have a dual-qualified advisor map your specific situation.

PFIC — The investment landmine

If you invest in non-U.S. mutual funds or ETFs while living abroad, you almost certainly fall under Passive Foreign Investment Company (PFIC) rules. PFIC taxation is punitive — the U.S. applies an “excess distribution” regime with interest charges that can exceed 100% of the gain.

Practical rule: do not buy foreign-domiciled mutual funds or ETFs as an American. Hold U.S.-domiciled ETFs through a brokerage that accepts Americans abroad (Interactive Brokers, Schwab International, sometimes Fidelity). If a European “financial advisor” sells you a local fund, politely decline.

Extension + deadlines for Americans abroad

• April 15: standard Form 1040 deadline (same as U.S. residents)
• June 15: automatic 2-month extension for Americans living abroad (file a statement saying you were abroad on April 15)
• October 15: additional extension available via Form 4868
• December 15: final possible extension in limited circumstances
• April 15: FBAR deadline (auto-extended to October 15)

Even if you have an extension to file, you generally owe any tax by April 15. Late-payment interest accrues from April 15. The extension gives you time to prepare, not time to pay.

Renouncing U.S. citizenship — the nuclear option

A small but growing number of Americans abroad renounce their citizenship to escape the tax filing burden. In 2024, ~3,500 Americans formally renounced (up from ~1,000 in 2010). The process:

• Make an appointment at a U.S. embassy/consulate — waitlists are 6–24 months in 2026
• Pay the renunciation fee — currently $450 (reduced from $2,350 effective April 13, 2026, per State Department final rule)
• Pay the Exit Tax if you’re a “covered expatriate” — triggered if net worth exceeds $2 million OR 5-year average annual net income tax liability exceeds $211,000 (2026 figure, per Rev. Proc. 2025-32). For 2026, the §877A(a)(3) gain exclusion is $910,000.
• File one final Form 1040 + Form 8854 as the exit-year tax return

Renunciation is irreversible. You lose the right to live and work in the U.S. without a visa, voting rights, and the option to sponsor family for Green Cards. It’s the right move for a small subset of wealthy, committed expats — and the wrong move for almost everyone else.

The compliance checklist — what to file every year

For a typical American living abroad:

• ✅ Form 1040 (with FEIE Form 2555 or FTC Form 1116)
• ✅ FBAR (FinCEN 114) if foreign accounts exceed $10K at any point
• ✅ Form 8938 if foreign assets exceed thresholds ($200K single / $400K MFJ living abroad)
• ✅ Schedule B to disclose foreign bank accounts even if under $10K
• ✅ State final return (for year you leave) or annual returns if you still have state ties
• ✅ Form 8854 — only if renouncing citizenship
• ✅ Form 8621 — only if you hold PFICs (avoid this situation)

Behind in filing? The Streamlined Procedures

If you’ve been living abroad and haven’t been filing — common, and almost always fixable — the IRS offers the Streamlined Foreign Offshore Procedures. You file the last 3 years of returns and 6 years of FBARs. In exchange, penalties are waived for non-willful violations.

The key: you must truthfully certify the non-compliance was “non-willful” — a reasonable mistake, not deliberate evasion. If the IRS decides it was willful, you lose access to streamlined and face massive penalties.

If you’re 3+ years behind, engage a streamlined-specialized CPA immediately. Don’t try to DIY this.

Recommended expat tax services

For most Americans abroad, DIY tax prep is a bad idea — the forms are complex, the penalties are severe, and specialized CPAs charge $500–$1,500 which is often cheaper than the tax savings they find. Services we recommend:

• Greenback Expat Tax Services — established, expat-only CPA firm, good for straightforward situations
• BrightTax — competitive pricing, good software portal
• MyExpatTaxes — software-first for simple situations, ~$150–350
• H&R Block Expat — for those who want a big-brand option
• Taxes for Expats (TFX) — strong for high-net-worth clients with complex situations

For PFIC-heavy, business-owner, or renunciation situations, use a boutique firm with that specialty rather than a general expat-tax shop.

The 10 most common tax mistakes Americans abroad make

1. Not filing at all. “I don’t live there anymore” is not a valid reason — see the Streamlined Procedures if you’re behind.
2. Missing FBAR. The easiest and most painful penalty to trigger. Set a recurring April reminder forever.
3. Investing in foreign mutual funds. PFIC rules turn 5% returns into 0% after-tax returns.
4. Not changing state domicile before moving. California and New York will tax you for years if you don’t cut ties.
5. Using FEIE when FTC would be better. Run both scenarios every year.
6. Missing Roth IRA conversion opportunities. Living in a low-tax year abroad is often the ideal time to convert.
7. Ignoring totalization agreements. Double-paying Social Security when you don’t have to.
8. Miscounting U.S. days. Blow the FEIE over one miscounted day.
9. Hiring a regular CPA who doesn’t know expat rules. Most Main Street CPAs don’t understand Form 2555 or treaty elections.
10. Panicking and renouncing without running the math. Renunciation is rarely the right answer.

Related guides on Settleguru

• FEIE 2026: How Americans Abroad Can Save $132,900 on Taxes (coming soon)
• FBAR Filing for Americans: The Complete Walkthrough (coming soon)
• How to Establish a Clean State Tax Exit Before Moving Abroad (coming soon)
• Best Banks for Americans Abroad (FATCA-Friendly Options) (coming soon)
• Portugal D7 Visa for Americans — Complete 2026 Guide
• Portugal Golden Visa for Americans — Is It Still Worth It in 2026?

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Last updated: April 2026. U.S. tax law changes frequently. This guide reflects 2026 inflation-adjusted figures and current regulations. For your specific situation, always work with a U.S. CPA who specializes in expat clients.

About the author: Bruno Bianchi is the founder of Settleguru.com, Spainguru.es, Portugalguru.com, and Moveinmexico.com — the Settleguru network for Americans moving abroad.

Affiliate disclosure: Some links in this guide are affiliate links. If you sign up through them, we may earn a commission at no additional cost to you. We only recommend services we’ve personally vetted.

Related: Wondering which countries are actually the best for Americans? See our ranked guide to the best countries for Americans to move to in 2026 — covering Portugal, Mexico, Spain, Costa Rica, Italy, Panama, Uruguay, and Canada with visa requirements, costs, and tax treatment.

American Expat Tax FAQ

Do I still have to file a US tax return if I live abroad full-time?

Yes. The US is one of only two countries that taxes citizens on worldwide income regardless of where they live. If your gross worldwide income exceeds the standard filing threshold (about $14,600 for single filers in 2025/2026), you must file Form 1040 every year — even if you owe nothing because the FEIE or Foreign Tax Credit wipes out your liability. Filing is the only way to claim those exclusions in the first place.

What is the Foreign Earned Income Exclusion (FEIE) limit for 2026?

The FEIE for the 2026 tax year is $132,900 per qualifying individual (up from $130,000 in 2025). A married couple where both spouses qualify can exclude up to $265,800 of earned income combined. The exclusion applies only to earned income (wages, self-employment) — not pensions, dividends, capital gains, or rental income. To qualify you must pass either the Physical Presence Test (330 full days outside the US in any 12-month period) or the Bona Fide Residence Test.

FEIE or Foreign Tax Credit — which one should I choose?

If you live in a high-tax country (Spain, France, Germany, UK), the Foreign Tax Credit usually wins because foreign tax paid often exceeds what the US would charge, leaving you with extra credits to carry forward up to 10 years. If you live in a low- or zero-tax country (UAE, Bahamas, Puerto Rico) or under a special low-tax regime (Portugal IFICI, Spain Beckham), the FEIE is typically better because there’s little foreign tax to credit against. You can use FEIE on earned income and FTC on passive income in the same year — but switching from FEIE to FTC has a five-year revocation rule, so think carefully before electing.

What’s the FBAR threshold and when is it due?

You must file an FBAR (FinCEN Form 114) if the aggregate balance of all your non-US financial accounts exceeded $10,000 at any point during the calendar year, even for one day. The deadline is April 15 with an automatic extension to October 15 — no separate extension request needed. FBAR is filed online through the BSA E-Filing System, separately from your tax return.

Do I have to keep filing state taxes after I move abroad?

It depends on which state you left and how clean your exit was. California, New Mexico, South Carolina, and Virginia are notoriously sticky — they continue claiming you as a resident based on factors like a US driver’s license, voter registration, property ownership, or family ties, even after you physically leave. Texas, Florida, Nevada, Washington, Wyoming, South Dakota, Tennessee, and Alaska have no state income tax, so establishing domicile there before you leave the US is a common move to avoid lingering state liability. Always file a final part-year return for the year you leave and document the date of departure.

What’s the penalty for missing the FBAR deadline?

Non-willful penalties run up to $10,000 per violation per year. Willful violations are far worse — up to the greater of $100,000 or 50% of the account balance per year. The IRS Streamlined Filing Compliance Procedures program lets non-willful late filers come into compliance with reduced or zero penalties if they meet the eligibility criteria.