You live in Lyon, Toulouse or Paris, your employment contract sits in a drawer in London, and your working day happens at a desk in France. Since Brexit, this everyday arrangement raises three hard legal questions at once: which French residence permit allows it, where your salary is taxed, and which country’s social security system covers you. The short answer is that France treats you as working in France from the first day you log on from French soil, with French payroll, French contributions and a permit that authorises paid work. The visiteur (visitor) card, the autorisation de travail (work authorisation), the URSSAF firmes étrangères (foreign firms) scheme and the 2008 Franco-British double tax treaty decide whether your set-up is lawful or fragile. This guide explains each step in plain English, quotes the exact statutes and court decisions that govern your case, shows what judges did with real remote workers, and sets out how to challenge a refusal from the préfecture, the health fund or the tax office.
I. Can a British citizen live in France and work remotely for a UK employer?
A. Which residence permit fits a British remote worker, and why the visitor card is a trap
Since 1 January 2021, British citizens are third-country nationals in France. If you were already settled before the end of the transition period, you hold a Withdrawal Agreement card, and this article is not about you. If you arrived later, you need a long-stay visa equivalent to a residence permit, then a carte de séjour (residence permit) whose wording matches what you actually do. For a remote employee, the natural permit is the carte de séjour temporaire (temporary residence card) marked salarié (employee). Article L. 421-1 of the Code de l’entrée et du séjour des étrangers et du droit d’asile (the immigration code, known as the CESEDA) provides that: « L’étranger qui exerce une activité salariée sous contrat de travail à durée indéterminée se voit délivrer une carte de séjour temporaire portant la mention ” salarié ” d’une durée maximale d’un an. La délivrance de cette carte de séjour est subordonnée à la détention préalable d’une autorisation de travail, dans les conditions prévues par les articles L. 5221-2 et suivants du code du travail ». In plain terms, a permanent contract (contrat à durée indéterminée, or CDI) opens a one-year salarié card, and a fixed-term contract leads to the parallel travailleur temporaire (temporary worker) card. The official service-public.fr page confirms the sequence and the documents for the salarié route in its English version at Travail d’un étranger en France : carte de séjour salarié/travailleur temporaire.
The prior work authorisation is the step British applicants most often discover late. Article L. 5221-2 of the Labour Code states: « Pour entrer en France en vue d’y exercer une profession salariée, l’étranger présente : 1° Les documents et visas exigés par les conventions internationales et les règlements en vigueur ; 2° Un contrat de travail visé par l’autorité administrative ou une autorisation de travail. » It is your employer, not you, who applies for the autorisation de travail online before you enter France, and the préfecture will only issue the salarié card once that authorisation exists. A UK company with no office, branch or subsidiary in France can still complete this formality: the application is filed electronically and the absence of a French establishment does not block it, although in practice some employers discover the procedure only when the préfecture asks for the approval number. If your London employer refuses to apply, you have no salarié card, and every month worked from France deepens the irregularity. Our companion guide on the British salarié card, the work-authorisation trap and challenging a refusal or removal order walks through that procedure document by document.
The trap to avoid is the visiteur card. It looks tempting because it asks only for proof of funds and health insurance, with no employer paperwork. Article L. 426-20 of the CESEDA grants it to a foreigner who proves self-sufficiency, but adds: « Par dérogation à l’article L. 414-10, cette carte n’autorise pas l’exercice d’une activité professionnelle. » A visiteur card does not authorise any professional activity, and French case law treats working from home for a foreign employer as professional activity on French soil, not as invisible foreign work. Logging on each morning from your flat in Bordeaux while holding a visiteur card means working without authorisation, which can lead to a refusal at renewal and, in serious files, an obligation de quitter le territoire français (obligation to leave France, abbreviated OQTF). The same warning applies to the self-employed route: if you convert to freelance invoicing for a single London client while remaining under their daily orders, the préfecture and URSSAF may reclassify the relationship as disguised employment, and neither the visiteur nor the entrepreneur/profession libérale card will then protect you. For genuinely independent consultants, see our guide to the British freelancer’s entrepreneur card and micro-entrepreneur registration; for first-time arrivals generally, the newcomer’s long-stay visa and carte de séjour guide covers the entry phase.
Two practical points complete the picture. First, French law gives remote work a precise definition that helps you: Article L. 1222-9 of the Labour Code states that « le télétravail désigne toute forme d’organisation du travail dans laquelle un travail qui aurait également pu être exécuté dans les locaux de l’employeur est effectué par un salarié hors de ces locaux de façon volontaire en utilisant les technologies de l’information et de la communication. » Your London job, done from your French home via the internet, is télétravail (remote work) in the legal sense, and your contract or an amendment should say so expressly, because judges scrutinise that clause, as the Meaux case below shows. Second, protect your renewal calendar. The Court of Cassation recalled in Cass. soc., 29 November 2023, No 22-10.004 that: « entre la date d’expiration de la carte de résident et la décision prise par l’autorité administrative sur la demande tendant à son renouvellement, dans la limite de trois mois à compter de cette date d’expiration, l’étranger peut justifier de la régularité de son séjour par la présentation de la carte arrivée à expiration. Pendant cette période, il conserve l’intégralité de ses droits sociaux ainsi que son droit d’exercer une activité professionnelle. » But the same judgment warns that « un étranger, titulaire d’une carte de résident, doit, pour bénéficier du délai de trois mois lui permettant, après expiration de son titre, de conserver son droit d’exercer une activité professionnelle, en solliciter le renouvellement dans les deux mois précédant cette expiration. » File the renewal within the two months before expiry, keep the receipt (récépissé), and show it to your employer: without a timely filing, the three-month bridge collapses and your employer must suspend you.
B. Refused permit, refused renewal or removal order: how to fight back, including in Paris
A refusal never arrives as a single sheet of paper. The préfecture must state its reasons in law and fact, and each reason points to a different remedy. If the ground is a missing or invalid autorisation de travail, the fastest fix is often to have the employer file a complete application and then ask the préfecture to reconsider (recours gracieux) within two months, attaching the new approval. If the ground is insufficient resources, an unsuitable home, or a perceived threat to public order, reconsideration alone rarely succeeds and you should prepare an appeal to the administrative court (tribunal administratif) within two months of notification. Where removal is ordered at the same time, the deadlines shrink dramatically: an OQTF with a thirty-day voluntary departure period is challenged within thirty days, while an OQTF without delay, served for example after a refusal at a visiteur renewal where unauthorised work was detected, must be challenged within forty-eight hours before the judge for urgent matters. These time limits run from notification, not from the date you decide to act, so diary them on the day you receive the decision and instruct counsel immediately.
In Paris and the inner suburbs, the practical details matter. Applications and renewals for residents of the capital go through the Préfecture de police de Paris, whose online booking slots for the salarié category fill weeks ahead; file early and keep every confirmation email and récépissé, because the receipt proves lawful stay while the file is examined. Appeals against Paris decisions go to the Tribunal administratif de Paris, while residents of Seine-Saint-Denis, Val-de-Marne and Hauts-de-Seine fall under the tribunals of Montreuil or Cergy-Pontoise depending on the department. Ask the court for a référé-suspension (urgent suspension) whenever the decision would force you to stop working or leave France before the main hearing: the judge can freeze the refusal within weeks if you show urgency and a serious doubt about legality. Your evidence bundle should contain the employment contract with its télétravail clause, the employer’s work-authorisation approval, three months of payslips showing French payroll registration, proof of address, health cover, and the tax notice from the previous year. Files win or lose on these exhibits, not on cover letters.
One final residence point for households: your British spouse, partner or children do not automatically share your salarié status. Each adult needs their own ground for stay, often vie privée et familiale (private and family life) for a spouse or étudiant (student) for a child over eighteen, and school-age children need enrolment papers from the local mairie (town hall). Our guide to British children’s school enrolment in France covers the education side. Sort the whole family’s permits together before anyone starts unauthorised work, because one refusal in the household weakens every parallel file.
II. Where do you pay tax and social charges when your home is in France and your employer is in London?
A. French tax residence, the treaty’s tie-breaker and the salary rule that taxes your London pay in France
France taxes its residents on worldwide income, and you become a French tax resident sooner than most newcomers expect. Article 4 B of the Code général des impôts (the French tax code) provides: « Sont considérées comme ayant leur domicile fiscal en France au sens de l’article 4 A : a. Les personnes qui ont en France leur foyer ou le lieu de leur séjour principal ; b. Celles qui exercent en France une activité professionnelle, salariée ou non, à moins qu’elles ne justifient que cette activité y est exercée à titre accessoire ; » Meeting any single test is enough: a permanent home in France, a main stay exceeding roughly six months, or a professional activity exercised in France that is more than incidental. A Briton who rents a flat in Paris eleven months a year and logs on daily for a London employer meets all three tests at once. From that moment, your UK salary belongs on a French income tax return (déclaration des revenus), converted into euros, alongside any UK rental income, interest or dividends, each with its own treaty treatment.
British readers often ask whether the UK keeps first claim because the employer and the payroll sit in London. The 2008 Franco-British double tax convention, whose English text is published by the UK government as the 2008 UK-France double taxation convention in force, answers in two stages. First, if both countries claim you as resident, Article 4(2) awards residence to one country through a fixed cascade: permanent home first, then the centre of vital interests where homes exist in both countries, then habitual stay, then nationality. Keep a home in both countries and the treaty looks to the centre of your vital interests, then to habitual stay, then to nationality. Someone whose family, home and daily work are in France will almost always be treaty-resident in France, even with a British passport and a London employment contract.
Second, Article 15 of the same convention, headed Revenus d’emploi (employment income), taxes salary where the work is physically done: employment income is taxable in the employee’s state of residence unless the job is exercised in the other state, in which case that other state may tax it. Because you physically perform the work in France, France may tax the salary. The 183-day exception in paragraph 2, which sometimes lets short postings stay taxable at home, requires three cumulative conditions, including remuneration paid by an employer who is not resident in the state of work; a full-time remote worker living year-round in France fails the day-count test in any event. The practical result is that France taxes first and the United Kingdom must eliminate the double taxation, usually by credit. On the UK side, the British government’s Living in France guide, which covers moving to France including visas, working, healthcare and driving, is the first port of call before you notify HMRC and your employer of the move. A UK tax charity, the Low Incomes Tax Reform Group, confirms the mirror logic in its own guide to working remotely for a UK employer while overseas, warning that overseas work triggers consequences for employer and employee alike. Do not assume HMRC practice or a P45 replaces the French return: file in France each spring, declare the gross salary, claim the treaty credit for any UK tax withheld under PAYE, and keep the P60 and every payslip for six years in case of a contrôle fiscal (tax audit). If the tax office reassesses you, the first step is a written claim (réclamation contentieuse) to the tax department, then the administrative court. Our analysis of French tax audits of British residents’ UK income details that procedure.
A related question is whether keeping a foot in the United Kingdom, for example a house in Kent visited monthly, preserves UK residence and avoids French tax. It does not. Dual factual residence is precisely what the treaty tie-breaker resolves, and the French domestic tests apply before the treaty is even opened. Splitting 200 days in France with daily remote work for London still leaves a French professional activity and usually a French main stay. The only durable planning tools are timing a genuine move, documenting the centre of vital interests honestly, and using the treaty’s credit machinery correctly, not manufacturing non-residence on paper.
B. French social security applies from day one, and your London employer must register and pay in France
Social security follows the place of work, not the employer’s address. Article L. 311-2 of the Social Security Code affiliates compulsorily: « toutes les personnes quelle que soit leur nationalité, de l’un ou de l’autre sexe, salariées ou travaillant à quelque titre ou en quelque lieu que ce soit, pour un ou plusieurs employeurs et quels que soient le montant et la nature de leur rémunération, la forme, la nature ou la validité de leur contrat ou la nature de leur statut. » And Article L. 111-2-2 of the same code adds: « sont affiliées à un régime obligatoire de sécurité sociale dans le cadre du présent code, quel que soit leur lieu de résidence, toutes les personnes : 1° Qui exercent sur le territoire français : a) Une activité pour le compte d’un ou de plusieurs employeurs, ayant ou non un établissement en France ; » The phrase « ayant ou non un établissement en France » (whether or not they have an establishment in France) is the key to your situation: a London company with no French office still owes French contributions for the employee working in France. Within the European Union, the same principle appears in Article 11 of Regulation (EC) No 883/2004 on the coordination of social security systems, and the Colmar Court of Appeal restated it in a dispute between URSSAF and a Luxembourg employer: « la personne qui exerce une activité salariée ou non salariée dans un État membre est soumise à la législation de cet État membre » (CA Colmar, 20 March 2025, RG 22/01035). In that case the court upheld a demand of 16,257 euros in contributions, surcharges and penalties against the foreign employer, adding that « sont affiliées à un régime obligatoire de sécurité sociale, quel que soit leur lieu de résidence, toutes les personnes qui exercent sur le territoire français une activité pour le compte d’un ou de plusieurs employeurs, ayant ou non un établissement en France, ou une activité professionnelle non salariée. » The message for a UK employer is blunt: French payroll registration is not optional paperwork.
Two objections regularly surface, and both fail for permanent remote work. The first is the A1 certificate: before Brexit, an employee genuinely seconded (détaché) from London to Paris for a short mission could remain under UK National Insurance with an A1 form. Article L. 1262-1 of the Labour Code still defines secondment strictly: « Un employeur établi hors de France peut détacher temporairement des salariés sur le territoire national, à condition qu’il existe un contrat de travail entre cet employeur et le salarié et que leur relation de travail subsiste pendant la période de détachement. » A Briton hired to live in France and telework indefinitely is not temporarily seconded, and since Brexit the United Kingdom is a third country outside the EU coordination regulations anyway, save for narrow Withdrawal Agreement cases. No valid A1 covers your situation, and presenting an expired or inapplicable certificate impresses neither URSSAF nor the health fund. The second objection is that UK National Insurance deductions prove coverage. They prove coverage for UK purposes only; France credits only contributions paid into a French scheme or validly maintained abroad under an international instrument.
In practice, the London employer registers with the URSSAF service des firmes étrangères (foreign firms department, formerly the CNFE) and declares through the titre firmes étrangères (TFE) simplified scheme, as explained on the official URSSAF page for Firmes étrangères, which covers companies established abroad, « sans établissement en France », that wish to hire an employee. The employer then operates French payroll: salary in euros at least at the SMIC (the statutory minimum wage) level, French payslips, withholding tax (prélèvement à la source), and employer plus employee contributions for health, retirement, unemployment and workplace accidents. The cost typically adds roughly forty to forty-five per cent on top of gross salary for the employer share, a figure London finance directors should budget before agreeing to the arrangement rather than discovering it in a reassessment notice. Early retirees who telework part-time should also read our guide to PUMA health cover without an S1, because mixing a UK pension with French-paid salary changes the health-cover analysis.
The courts show what happens when the paperwork does not match reality. In TJ Meaux, social division, 27 October 2025, RG 25/00194, a woman teleworking from France for a foreign employer asked the health fund (caisse) to open her sickness rights. The fund refused because her contributions were paid abroad, and the court agreed: « Il n’est donc pas démontré, faute d’éléments autres que les seules déclarations de la salariée, qu’elle exerce son activité sur le territoire français. » Her contract, produced in Georgian and English without a French translation, organised no cross-border remote work, and the court added that « Le seul fait qu’elle allègue réaliser sa prestation de travail depuis la France sous la forme du télétravail, sans que son contrat de travail n’organise ce télétravail, est insuffisant à considérer qu’elle exerce une activité professionnelle en France. » She lost on both affiliation routes, work-based and residence-based, because she worked yet paid nothing into the French system. The mirror decision from the Court of Cassation, Cass. 2nd civ., 13 October 2022, No 21-13.252, quashed an appeal ruling that had kept French expatriate staff under French legislation without the employer’s formal undertaking to pay the full contributions, recalling that secondment abroad under Article L. 761-2 requires that undertaking and that voluntary cover otherwise runs through the dedicated expatriate funds. Read together, the lesson is symmetrical: France taxes and covers work performed on its territory through compulsory contributions, and paper arrangements that route the money elsewhere do not survive judicial review.
If the system turns against you, each body has its own challenge route with its own clock. A CPAM (caisse primaire d’assurance maladie, the local health fund) refusal goes first to the commission de recours amiable (CRA, the fund’s internal appeals board) within two months, then to the social division (pôle social) of the judicial court, in Paris the Tribunal judiciaire de Paris, within two months of the CRA’s rejection. An URSSAF reassessment (redressement) follows the same two-stage path: written adversarial phase, then CRA, then the pôle social. Keep every contract version, timesheet, VPN log, A1 request and refusal, registration confirmation and payslip, because the Meaux judgment proves that bare assertions of remote work carry no weight. Where the dispute concerns income tax rather than contributions, the route runs through the tax office’s formal claim procedure and then the administrative court, as our tax audit guide explains. Never let a deadline pass while negotiating informally: file the appeal first, negotiate second.
Conclusion
Living in France while working for a London employer is lawful, but only as a fully French employment situation: a salarié permit backed by a prior work authorisation, a London employer registered with the URSSAF foreign-firms service and running French payroll, a French tax return with treaty relief for any UK withholding, and a contract that expressly organises cross-border remote work. The visitor card cannot carry this arrangement, an A1 certificate cannot bless a permanent move, and National Insurance deductions do not buy French health cover. Build the paper trail before the administrations ask for it: work authorisation, registration confirmations, payslips, translated contract, residence proofs. And if a refusal or a bill arrives, use the remedy that matches the sender, préfecture, health fund, URSSAF or tax office, within its deadline. Done properly, the cross-Channel desk is one of the most comfortable ways to live in France; done informally, it is three disputes waiting to happen.