US Expat Taxes — Filed Correctly, From Anywhere in the World

Who Must File — The Citizenship-Based Taxation Rule

US citizens and permanent residents (green card holders) must file US federal tax returns on their worldwide income regardless of where they live or where their income is earned. This is called citizenship-based taxation, and the US is one of only two countries in the world (alongside Eritrea) to use this system. Filing thresholds are based on gross income and filing status — for 2024, a single filer under 65 must file if gross income exceeds $14,600. The rule applies even if every dollar you earn comes from a foreign employer, is paid into a foreign bank account, and is already taxed by your country of residence. Renouncing the obligation requires formally expatriating — simply moving abroad, or even never having lived in the US as an "accidental American," does not end your US filing duty.

The Foreign Earned Income Exclusion (FEIE) — Form 2555

The FEIE is the single most valuable tool for many expats. By filing Form 2555, qualifying taxpayers can exclude up to $126,500 (2024) of foreign earned income — wages, salary, and self-employment income earned for services performed abroad — from US taxable income. The exclusion does not apply to passive income such as dividends, interest, capital gains, or pension distributions. To claim it you must have a tax home in a foreign country and meet one of two qualifying tests. Choosing the FEIE is an election: once made, it generally stays in effect until revoked, and revoking it can lock you out of the exclusion for five years without IRS consent.

Physical Presence Test

The Physical Presence Test is purely mechanical: you must be physically present in a foreign country (or countries) for at least 330 full days during any consecutive 12-month period. The days do not have to be consecutive, but each must be a full 24-hour day on foreign soil — travel days and time over international waters generally don't count. This test is ideal for digital nomads and people who relocated mid-year, because it doesn't require establishing permanent residency. Careful day-counting is essential; a single miscounted trip can disqualify the entire exclusion.

Bona Fide Residence Test

The Bona Fide Residence Test is based on intent and ties rather than a day count. You must be a bona fide resident of a foreign country for an uninterrupted period that includes an entire tax year (January 1 to December 31). The IRS weighs factors such as your visa status, whether your family lives with you, housing arrangements, and your integration into the local community. Short trips back to the US are permitted as long as you intend to return to your foreign home. This test suits long-term expats with a stable foreign base.

Housing Cost Exclusion / Deduction

On top of the FEIE, qualifying expats can exclude or deduct certain foreign housing costs above a base amount. Eligible expenses include rent, utilities (other than telephone), and renter's insurance. Employees use the housing exclusion; the self-employed use the housing deduction. The cap varies by city — high-cost locations like London, Hong Kong, and Geneva have significantly higher limits. Properly claiming the housing benefit can shelter thousands of additional dollars beyond the standard exclusion.

Foreign Tax Credit (Form 1116) — Avoiding Double Taxation

The Foreign Tax Credit (FTC) gives you a dollar-for-dollar credit against your US tax liability for income taxes you've paid to a foreign government. Unlike the FEIE, which removes income from the calculation entirely, the FTC offsets the actual tax owed. It applies to a broader range of income — including passive income — and does not require meeting a presence test. For expats in high-tax jurisdictions, the FTC often wipes out US liability completely while preserving access to refundable credits and IRA contribution eligibility that the FEIE can limit.

When FTC Beats FEIE

The FTC is usually the stronger choice when your foreign effective tax rate is higher than your US rate — common in countries like the UK, Germany, France, and Australia. Because the credit can exceed your US liability on that income, you build up carryforwards instead of simply excluding income. The FTC also keeps earned income on your return, which can preserve eligibility for the Child Tax Credit and retirement contributions. We model FEIE-only, FTC-only, and combined scenarios to find the lowest legal outcome for each client.

Credit Carryforward Rules

If your foreign taxes paid exceed the allowable credit in a given year, the excess isn't lost. Unused FTC can be carried back one year and carried forward up to ten years, applied against US tax on foreign-source income in those years. This is especially valuable for expats whose foreign and US tax rates fluctuate, or who have a high-tax year followed by lower-income years. Tracking and applying carryforwards correctly requires year-over-year continuity — another reason consistent professional filing matters.

FBAR and FATCA — Foreign Account Reporting

Beyond income tax, expats face two separate foreign-account disclosure regimes that catch many people off guard. FBAR and FATCA are informational filings — they don't usually create tax, but the penalties for ignoring them are among the harshest in the tax code. They overlap but are filed with different agencies, on different forms, under different thresholds. Many compliant taxpayers owe nothing yet must still report, and failing to do so is the most common reason expats end up in IRS amnesty programs.

FinCEN 114 Filing Requirements

The FBAR (FinCEN Form 114) must be filed if the aggregate value of your foreign financial accounts exceeded $10,000 at any point during the calendar year — even for a single day, and even if no single account hit that figure. "Accounts" include checking, savings, certain pensions, and accounts over which you have signature authority but no ownership. It is filed electronically with the Financial Crimes Enforcement Network, separately from your tax return, by April 15 with an automatic extension to October 15.

Form 8938 (FATCA) Thresholds

FATCA reporting on Form 8938 attaches to your Form 1040 and applies at higher thresholds that vary by filing status and residence. For taxpayers living abroad, a single filer must report if specified foreign financial assets exceed $200,000 on the last day of the year or $300,000 at any point. Married-filing-jointly thresholds are double. Form 8938 covers a broader set of assets than the FBAR — including foreign stock, partnership interests, and certain insurance — so many expats must file both.

Penalties for Non-Compliance

Penalties are severe. Non-willful FBAR violations can run up to roughly $16,000 per violation, while willful violations reach the greater of $100,000 or 50% of the account balance. FATCA failures start at $10,000 and can climb to $50,000 for continued non-compliance, plus accuracy-related penalties on any underpaid tax. Because enforcement is aggressive and foreign banks now report account holders to the IRS, voluntary correction through amnesty programs is almost always cheaper than waiting to be found.

Catching Up — Streamlined Foreign Offshore Procedures

If you genuinely didn't know you had to file, the IRS Streamlined Foreign Offshore Procedures offer a structured, low-penalty path back into compliance. The program was designed for the millions of Americans abroad who fell behind unintentionally, and it has brought hundreds of thousands of taxpayers current without the draconian penalties of older voluntary disclosure programs. It is not available to anyone the IRS has already contacted, so acting before you're flagged is critical.

Eligibility Requirements

To use the streamlined foreign track, you must certify that your failure to file was non-willful — meaning due to negligence, inadvertence, mistake, or a good-faith misunderstanding of the law. You must also meet a non-residency requirement: in at least one of the last three years you were physically outside the US for 330 days and did not maintain a US abode. A signed certification (Form 14653) explaining your circumstances is required and should be drafted carefully.

What's Required: 3 Returns + 6 FBARs

The program requires filing (or amending) the past three years of delinquent income tax returns and the past six years of FBARs. You'll report all previously unreported foreign income and pay any tax due plus interest for those three years. Returns must be complete and accurate — the streamlined process is a one-time opportunity, and errors can undermine the non-willful certification. Organized records make this far smoother, which is where a dedicated expat team adds the most value.

Penalty Relief

The headline benefit is penalty relief: qualifying taxpayers using the foreign offshore procedures pay no failure-to-file, failure-to-pay, accuracy-related, or FBAR penalties. You pay only the back tax and interest. Compared with the potential five- and six-figure penalties for being caught non-compliant, the savings are often dramatic — making streamlined filing one of the best deals in the tax code for eligible expats.

Self-Employed Expats — Additional Considerations

Freelancers, consultants, and business owners abroad face a layer of complexity that employees don't. The FEIE can exclude your earnings from income tax, but it does nothing for self-employment tax — and several deductions and elections interact in ways that can either save or cost you thousands. Getting the structure right from the start prevents expensive surprises at filing time.

Self-Employment Tax and Totalization Agreements

Self-employed US persons owe 15.3% self-employment tax (Social Security and Medicare) on net earnings, and the FEIE does not reduce it. However, the US has bilateral "totalization agreements" with about 30 countries that prevent double social-security taxation. If you're covered by, and paying into, the social-security system of an agreement country, you may be exempt from US self-employment tax — with a certificate of coverage as proof. Without an agreement, you generally remain liable for the full US self-employment tax.

Foreign Housing Deduction for the Self-Employed

Self-employed expats claim foreign housing relief as a deduction rather than an exclusion, taken against self-employment income on Form 2555. It can meaningfully reduce taxable income in high-cost cities, but it's limited to the portion of housing costs above the base amount and capped by location. Coordinating the housing deduction with the FEIE and any FTC requires careful sequencing to avoid double-counting and to maximize the combined benefit.

Deadlines Every Expat Must Know

Expats get some breathing room the IRS doesn't extend to domestic filers, but the dates are easy to misremember — and interest still accrues on unpaid tax from the original April deadline even when filing is extended. Here's the schedule we track automatically for every client:

Why Working With an Expat Tax CPA Matters

US expat tax sits at the intersection of two tax systems, multiple forms, and rules that change year to year. A single missed election, miscounted day, or unreported account can turn a routine filing into a costly problem — and generic tax software simply isn't built for FEIE elections, FTC carryforwards, FBAR/FATCA coordination, or PFIC and Form 5471 reporting. A dedicated expat tax CPA models your options, files every required form correctly, maintains the multi-year continuity that carryforwards and elections depend on, and represents you before the IRS if questions arise. For Americans abroad, that expertise usually pays for itself — in lower tax, avoided penalties, and peace of mind.