Digital nomad taxes: what Americans abroad must know
For most Americans abroad the difficulty is the income. For people who move every few months it is the qualifying test — the thing that unlocks the exclusion in the first place. Constant movement makes both routes to it harder, and one of them close to unusable.
Two routes, and only one of them fits
Bona fide residence. This asks whether you are genuinely resident in one foreign country for an uninterrupted tax year. Moving between countries every few months is the definition of not being that, so this route is generally closed to nomads.
Physical presence. This counts days: 330 full days in foreign countries within any rolling twelve-month period. No single country is required, which is why it is the route that usually applies.
How the 330 days are counted
A full day means midnight to midnight in a foreign country. Days spent in the United States do not count, and neither does time over international waters — a long flight can quietly cost you a day you assumed was covered.
The twelve-month window is any twelve consecutive months, not the calendar year. That flexibility is genuinely useful: in a year where the trips do not line up, moving the window can be the difference between qualifying and not. The corollary is that you have only 35 days a year in the United States, and they include the day you land and the day you leave.
Your tax home has to be abroad
Passing the day count is not enough on its own. Your tax home — broadly, the general area of your main place of business — must also be outside the United States, and you must not have kept an abode in the States. Someone who keeps a home available in the US and works from abroad on a laptop can fail this while passing the day count comfortably.
Self-employment tax does not go away
This is the one that costs nomads money. The Foreign Earned Income Exclusion excludes income from income tax. It does nothing for self-employment tax, which stays due on net self-employment earnings at the usual rate.
The exception is a totalization agreement, which can assign your social security coverage to the country you are actually in. Those agreements exist with a specific list of countries, and moving constantly makes it harder to fall clearly under any one of them.
Keep the record as you go
The day count is yours to prove. Entry and exit stamps, boarding passes and a simple running log are what support the position later. Reconstructing two years of movement from memory is unpleasant, and it tends to happen exactly when someone is asking.
IRC §911 and §1401; IRS Publication 54; Form 2555 instructions; US totalization agreements as in force. The exclusion cap is $130,000 for tax year 2025. Checked 13 September 2026.
Counting days and not sure they add up?
Worth checking before the window closes rather than at filing time.