France tax residency rules: the four tests, and why 183 days isn't the whole story
France makes you tax resident if any one of four tests points to France. The household, main-stay, work and economic tests, and the treaty tie-breaker.
Updated · Expat Academy · Education, not advice
Ask most people how you become a French tax resident and they'll say "183 days". That number is real, but it's only one piece of one test. French law (article 4 B of the tax code) uses four tests, and meeting any one of them is enough.
The four tests
- Your household (foyer) is in France. This is where your spouse and dependent children normally live. If your spouse lives in France most of the year, France can treat the household, and you, as resident even if you travel constantly.
- France is your main place of stay. In practice, more than 183 days in the calendar year, but it's really a test of where you mostly are. If you spend more time in France than in any other single country, it can be met with fewer days.
- Your main work is in France. Rarely relevant to retirees.
- The centre of your economic interests is in France. Where your main investments are managed from, or where most of your income comes from.
Because it's "any one", the household and main-stay tests are the ones that catch retirees, and both can be met without 183 days.
The tie-breaker in the US-France tax treaty
When both countries consider you resident under their own laws, the treaty decides, in this order:
| Step | The question | Usually decided by |
|---|---|---|
| 1 | Where do you have a permanent home available to you? | A home you can use all year, owned or rented |
| 2 | If both, where is your centre of vital interests? | Family, social life, doctors, accounts, property |
| 3 | If unclear, where do you habitually stay? | Where you spend more time over several years |
| 4 | If still unclear, which is your nationality? | A US citizen ends up resident in the US |
The tie-breaker decides whether France treats you as resident and taxes your worldwide income. It doesn't stop the US taxing you: as a citizen you file US returns wherever you live, and the treaty then sorts out the credits.
Moving to France: when residence starts
If you move your home to France, residence generally starts on the day you arrive with that intention: a long-term lease, your belongings, a visitor visa. Your first French return covers the rest of that year. That date matters because some tax planning only works before it; see tax planning before moving to Europe.
Spending part of the year in France: staying outside the tests
If you want to spend a few months a year in France and stay a US resident only, you need every test to point to the US:
- Travel together. If one spouse stays on in France for months while the other goes home, the household test may point to France.
- Spend clearly more of the year in the US, and well under 183 days in France.
- Keep your money run from the US: accounts, advisers, income.
- Keep your life in the US and the evidence of it: your home, doctors, car, driver's licence, voter registration and state tax returns.
A year-round flat in France doesn't make you resident on its own, but it gives you a "permanent home" in both countries, which brings the tie-breaker to the second step. See spending part of the year in France without becoming tax resident.
Days are counted cautiously
France counts any part of a day in France as a day there, so the day you arrive and the day you leave both count. Our free Residency Day Counter counts the same way and shows the Schengen 90/180 limit and the 183-day line side by side.
Questions
Do I become a French tax resident after 183 days?
Spending more than 183 days in France in a calendar year is one way to meet the main-stay test, but it isn't the only way to become resident. France also looks at where your household lives, where your main work is and where your economic interests are centred. Any one of the four is enough.
Can I be a tax resident of France and the US at the same time?
Under each country's own law, yes. The US-France tax treaty then applies a tie-breaker (permanent home, centre of vital interests, habitual abode, nationality) to decide which country is your residence for the treaty. As a US citizen you still file US returns either way.
When does French tax residence start if I move to France?
Generally from the date you move your home there. Your first French return covers the rest of that calendar year, and you file it the following spring.
Does a year-round apartment in France make me a French tax resident?
Not by itself. But a home available to you all year counts as a permanent home for the treaty tie-breaker, so if you also keep a US home, the tie-breaker moves on to where your centre of vital interests is.
Go deeper
- F1 France's four residence tests Free preview: Any one of four tests makes you French tax resident. How each works, how the treaty breaks a tie with the US, and how Track A students stay on the US side.
- A3 The tests that aren't about days: France can claim you with far fewer than 183 days. The household, main-stay and economic tests, the treaty tie-breaker, and the evidence that keeps your life centred in the US.
- C1 The four kinds of "residence" Free preview: Your visa, your tax residence, your US state and your Schengen days are four separate tests, and they can point in four directions.
Sources
- US-France income tax convention (1994), irs.gov
- US-France tax treaty explained (2026), Zenith Financial Advisors
Education, not advice. This guide explains general rules as of the date above. Rules change every year; confirm your own situation with a qualified adviser in the US and in France.