French tax residency: the criteria, the 183-day myth and how to prove you have left France

Maître Alexis Germe Cross-border tax International taxation

Your passport, the address printed on your documents, the number of days you spend in each country: which of these decides where you pay tax on your worldwide income? Whether you have moved abroad and the French tax authorities still treat you as one of their taxpayers, or you are settling in France and wonder when France will start taxing that income, the answer turns on one question: French tax residency. It does not depend on your nationality, on the address printed on your documents, or on a simple 183-day count. It is governed by precise legal criteria set out in Article 4 B of the French General Tax Code (Code général des impôts, or CGI)^[1]. This guide explains those criteria, how the France-UK tax treaty settles cases where both countries claim you, and the evidence you should gather to show that you have genuinely left France. If you are settling in France, also look at the tax relief available when you move to France.

What is French tax residency?

French tax residency (the French statute speaks of domicile fiscal, tax domicile) determines whether France taxes you on your worldwide income or only on income arising in France. Under Article 4 A of the CGI, people whose tax domicile is in France are liable to income tax on all of their income, while those whose tax domicile is outside France are liable only on their French-source income^[2][3].

The stakes are high. A French tax resident is taxable in France on income wherever it arises, subject to treaty relief, and must report accounts held abroad. A non-resident remains taxable in France only on specific French-source income, such as rent from a French property; our guide to the taxes still due in France as a non-resident covers that side of the question. Leaving France may also trigger the French exit tax on unrealised gains for holders of substantial shareholdings.

Test your knowledge

3 questions to see whether this article can help you

1. How many alternative criteria does Article 4 B of the French General Tax Code use, as a general rule, to define tax domicile?

One Three Five

2. Is spending fewer than 183 days a year in France enough to stop being a French tax resident?

Yes, that is the statutory rule No, meeting a single Article 4 B criterion is enough to remain resident Yes, provided you hold a foreign residence certificate

3. If both France and the UK treat you as resident, what settles the matter?

The taxpayer’s own choice The decision of the French tax authorities alone The tie-breaker rules of the France-UK tax treaty

Who is a French tax resident? The three criteria of Article 4 B

Article 4 B of the CGI sets out three alternative criteria. Meeting just one of them is enough for you to be treated as tax domiciled in France under French domestic law^[1][3].

The three tests of French tax domicile

1Home or principal place of stayWhere your family normally lives; failing that, the country where you spend most of your time
2Professional activityEmployed or self-employed work carried on in France, unless it is merely ancillary
3Centre of economic interestsMain investments, seat of your business, source of most of your income

One criterion is enough to make you a French tax resident under domestic law, unless a tax treaty allocates your residence to the other country.

Your home (foyer) or principal place of stay in France

Your home, or foyer, is the place where you normally live, provided that residence in France is of a permanent nature^[3]. In practice, it is where your spouse or partner and children live. The French tax authorities consider that this place remains your home even if your work keeps you away for most of the year, as long as your family continues to live there^[3].

Only where no home can be identified does the second limb apply: your principal place of stay. As a general rule, taxpayers who stay in France for more than six months in a given year are regarded as having their principal place of stay there^[3].

1. The following persons shall be regarded as having their tax domicile in France within the meaning of Article 4 A:
a. Persons who have their home or their principal place of stay in France;
Article 4 B of the CGI, 1, a, current version (unofficial translation) ^[1]

Your main professional activity in France

You are a French tax resident if you carry on a professional activity in France, whether employed or self-employed, unless you can show that it is only ancillary^[1]. Where you have several activities, the main one is the activity to which you devote the most time, even if it does not generate most of your income; if that test cannot be applied, it is the one that brings you the largest share of your worldwide income^[3].

Since the Finance Act for 2020, senior executives of companies whose registered office is in France and whose annual turnover in France exceeds 250 million euros (including, for a group, the turnover of the companies it controls) are deemed to carry on their main professional activity in France, unless they prove otherwise^[1][4].

b. Persons who carry on a professional activity in France, whether salaried or not, unless they can show that this activity is carried on there on an ancillary basis;
Article 4 B of the CGI, 1, b, current version (unofficial translation) ^[1]

Your centre of economic interests in France

Finally, you are a French tax resident if France is the centre of your economic interests: the place where you have made your main investments, where your business has its seat, from which you manage your assets, or from which you derive, directly or indirectly, most of your income^[1][3].

c. Persons who have the centre of their economic interests in France.
Article 4 B of the CGI, 1, c, current version (unofficial translation) ^[1]

Does the 183-day rule apply to French tax residency?

Spending fewer than 183 days a year in France is not enough to escape French tax. French law contains no standalone 183-day rule: the six-month threshold is only an indicator used to identify your principal place of stay, which itself only comes into play when you have no home in France^[3]. Someone who spends 100 days a year in France can perfectly well remain a French tax resident if their family lives there, if they work mainly there, or if most of their income comes from France.

The confusion often comes from the UK. Under the UK Statutory Residence Test, spending 183 days or more in the UK in a tax year does make you automatically UK resident, and spending fewer than 16 days (or 46 days if you were not UK resident in any of the three previous tax years) makes you automatically non-resident^[10]. These are UK rules only: they say nothing about whether France regards you as resident.

Illustrative example

Working in London, still resident in France

A British engineer living in Bordeaux takes a two-year contract in London in September and spends more than 250 days a year in the UK. Her husband and their children stay in the family home near Bordeaux until the end of the school year.

Under French law, her home remains in France while her family lives there: she meets the first criterion of Article 4 B whatever the number of days she spends in London. The UK, applying its own test, will also treat her as resident. Both countries therefore claim her, and the answer will come from the tie-breaker rules of the France-UK treaty: a permanent home available in each country, then the centre of vital interests. The date on which her family joins her will be decisive.

A hypothetical scenario, presented for illustration only. Every situation calls for an individual analysis.

French tax residency compared with the UK and US rules

The table below sets the French rules alongside the UK and US approaches^{[1][3][10][12]}.

French tax residency at a glance

Legal basis in France	Articles 4 A and 4 B of the CGI^[1][2].
French tests	Home or principal place of stay, main professional activity, centre of economic interests. One is enough^[1].
183 days in France	Only an indicator of the principal place of stay, which applies when there is no home in France^[3].
Consequence of residence	Taxation on worldwide income; non-residents are taxed on French-source income only^[2].
UK approach	Statutory Residence Test: day counts, automatic tests and UK ties, applied per UK tax year^[10].
US approach	US citizens and resident aliens are taxed on worldwide income, even when living abroad^[12].
Dual residence	Settled by the tie-breaker rules of the applicable tax treaty, which override French domestic law^[1][5].

For American citizens, becoming a French tax resident does not end US obligations, since the United States taxes its citizens on worldwide income wherever they live^[12]: it adds French ones, and the France-US tax treaty then determines how double taxation is relieved.

Dual tax residency: how the France-UK tax treaty decides

When two countries each consider you resident under their own law, you have dual tax residency, and the treaty’s tie-breaker rules apply in a strict order. Article 4 of the 2008 France-UK double taxation convention provides the following sequence^[5]:

The France-UK treaty tie-breaker, step by step

Step 1Permanent home available to you: resident only where you have one
Step 2Home in both countries: centre of vital interests, where your personal and economic relations are closer
Step 3Centre of vital interests unclear, or no permanent home: habitual abode
Step 4Habitual abode in both or neither: nationality
Step 5National of both or neither: mutual agreement between the tax authorities

(a) he shall be deemed to be a resident only of the Contracting State in which he has a permanent home available to him; if he has a permanent home available to him in both States, he shall be deemed to be a resident only of the State with which his personal and economic relations are closer (centre of vital interests);
France-UK Double Taxation Convention of 19 June 2008, Article 4, paragraph 2, authentic English text ^[5]

French law expressly gives way to these treaty rules: a person who meets one of the Article 4 B criteria is nevertheless not tax domiciled in France where, under a double tax treaty, they are not regarded as resident of France^[1]. Our article on the France-UK tax treaty explains how income is then allocated.

Persons who meet at least one of the criteria set out in a to c of this 1 may not, however, be regarded as having their tax domicile in France where, under the international conventions relating to double taxation, they are not regarded as residents of France.
Article 4 B of the CGI, 1, last paragraph, current version (unofficial translation) ^[1]

If the two administrations still disagree, the treaty offers a mutual agreement procedure. The case must be presented within three years from the first notification of the action resulting in taxation not in accordance with the treaty, or within six years from the end of the tax year concerned^[5][6].

Changing tax residency mid-year: the year you leave France

The year of departure changes the scope of French taxation^[7]:

from 1 January to the date of departure, you are tax domiciled in France and taxed on all your income, French and foreign^[7];
after that date, if you are non-resident, only your French-source income remains taxable in France^[2][7];
in the following year you file a return form 2042 covering all income received from 1 January to your departure (foreign income being reported on form 2047), together with a form 2042-NR covering only French-source income from your departure to 31 December^[7];
once that return has been processed, if you still have French-source income taxable in France, your file is transferred to the tax office for non-resident individuals (SIPNR)^[7].

The year you leave France, in practice

1 January to departureFrench tax on all income, wherever it arises
After departureFrench tax on French-source income only
Following yearForms 2042 (and 2047) for the resident period, form 2042-NR for the rest of the year
AfterwardsFile managed by the tax office for non-resident individuals

The UK usually splits its tax year into a resident and a non-resident part when you move in or out^[10]. Because the French tax year is the calendar year and the UK tax year runs from 6 April to 5 April, your departure or arrival date must be consistent on both sides and match reality (actual move, start of the new job, family settling): inconsistencies are often where a challenge begins.

How to prove you have left France for tax purposes

Who has to prove what depends on the procedure. If you maintain that you were not required to file the return on which the authorities rely, because you were not domiciled in France, the official commentary places the burden of proof on the tax authorities^[13]. The same applies where they reassess you under the contradictory procedure and you dispute the proposed adjustment in time; if you accept it or do not reply within the time allowed, the burden passes to you^[13]. If you simply stop filing, you can be taxed by default (taxation d’office), and no formal notice is needed where you have moved abroad without filing your return^[14]. The authorities must then first show that you were required to file, but it is for you to prove that the assessment is excessive^[15][16].

Either way, a taxpayer with no tangible evidence is in a weak position. Build an evidence file from the outset:

tenancy agreement or purchase deed for your home abroad, together with utility and internet bills;
employment contract, company documents or evidence of business activity in your new country;
school certificates for your children and evidence that your spouse or partner has moved with you;
a certificate of residence from the foreign tax authority (in the UK, HMRC issues one to confirm UK tax residence to a foreign tax authority)^[11], together with local tax returns and assessments;
termination of the lease, sale or letting of your French home, and change-of-address notifications to French bodies;
bank statements and travel records (tickets, passport stamps, diaries) that allow your stays to be reconstructed.

No single document is decisive: it is the body of evidence as a whole that convinces. A foreign certificate of residence is useful, but it does not bind the French administration, which applies its own law and the relevant treaty.

What are the risks if France challenges your tax residency?

If the French tax authorities conclude that you remained a French tax resident, they can bring your worldwide income into the French tax base. The ordinary time limit for income tax reassessments runs to the end of the third year following the year in which the tax is due^[8]. It is extended to the end of the tenth year where an individual relies on a false tax domicile abroad, for income not declared in any return filed on time, and also where certain reporting obligations have not been met, including the declaration of foreign accounts (unless their total balances never exceeded €50,000 during the year)^[8]. Surcharges of 40% for deliberate failure and 80% for abuse of law or fraudulent manoeuvres may be added to the tax due^[9].

If France challenges your tax residency: what is at stake

1Three yearsOrdinary time limit for income tax reassessments, to the end of the third year following the year the tax is due^[8]
2Ten yearsExtended time limit where a false tax domicile abroad is relied on (for income not declared on time), or where reporting obligations such as the declaration of foreign accounts were not met, unless their total balances never exceeded €50,000^[8]
340% or 80%Surcharges for deliberate failure (40%) and for abuse of law or fraudulent manoeuvres (80%)^[9]

At stake: your worldwide income brought into the French tax base.

Securing your French tax residency position with a lawyer

Tax residency is one of the most disputed questions in international tax law. As part of our international tax practice, Alexis Germe can assess your situation under French domestic law and the applicable treaty, help you document your move, and represent you if the French authorities challenge your position.

Are you preparing to leave France, settling there, or already being questioned about your residence? Contact Alexis Germe with your planned or actual date of departure and the country concerned: this is the starting point of the analysis.

Sources and reference texts

Frequently asked questions about French tax residency

Can I be a French tax resident while living abroad?

Yes. Meeting a single criterion of Article 4 B of the French General Tax Code is enough, for example keeping your family home in France or having your centre of economic interests there. A tax treaty may, however, allocate your residence to the other country.

Does the 183-day rule decide French tax residency?

No. French law has no standalone 183-day rule. Time spent in France is only an indicator of your principal place of stay, which applies only if you have no home in France.

What happens if both France and the UK treat me as resident?

The tie-breaker rules in Article 4 of the 2008 France-UK treaty apply in order: permanent home, centre of vital interests, habitual abode, nationality, then mutual agreement between the two tax authorities.

How do I get a certificate of tax residence?

It is issued by the tax authority of the country where you live; in the UK, HMRC issues it. It is useful evidence but does not bind the French tax authorities.

How far back can France reassess my tax residency?

For income tax, the ordinary limit runs to the end of the third year after the year in which tax is due. It is extended to the end of the tenth year where someone relies on a false tax domicile abroad or has failed to meet certain reporting obligations, such as declaring foreign accounts.