You live in France, your contract is with a company in London that has no French office, and every working day happens at your desk in Lyon, Bordeaux or Paris. Your employer runs a British payroll, deducts British income tax under PAYE and British National Insurance, and sends you a payslip in pounds. That arrangement feels normal until the French administration intervenes: URSSAF, the French body that collects social-security contributions, treats work performed on French soil as insured in France and bills years of employer and employee contributions with surcharges, while the French tax office taxes the same salary as worldwide income of a French resident. Since the end of free movement, British citizens are third-country nationals in France, so residence papers and work authorisation add a second front. This guide answers the practical payroll question that decides everything else: how a British employer with no French establishment registers you in France, files the pre-employment declaration known as the DPAE, issues a French-compliant payslip through the foreign-firms service known as the TFE, and what to do when URSSAF or the tax office sends a bill you dispute.
I. Your British employer has no French office: how does it put you on a French payroll?
A. How does my United Kingdom employer register in France and file the DPAE pre-employment declaration?
The starting point is affiliation. French social-security law provides that “Sont affiliées obligatoirement aux assurances sociales du régime général, quel que soit leur âge et même si elles sont titulaires d’une pension, 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.” (article L. 311-2 du code de la sécurité sociale, version en vigueur). In plain terms, once you perform your work physically in France, you belong to the French scheme even if your contract is governed by English law and your employer sits in London. Nationality, contract form and payroll currency change nothing. The Cour de cassation, the supreme court for civil and criminal matters, enforces this territoriality strictly: in a 2022 ruling, where “à la suite d’un contrôle portant sur les années 2011 à 2013, l’URSSAF de Picardie (l’URSSAF) a, selon lettre d’observations du 11 juillet 2014, puis mise en demeure du 24 décembre 2014, notifié à la société [2] (la société) un redressement” (Cour de cassation, deuxième chambre civile, 13 octobre 2022, pourvoi n° 21-13.252), the court examined which employments escaped French contributions and confirmed that only narrow statutory exceptions displace affiliation. A London-only payroll for permanent work in France is not one of them.
Registration follows from affiliation. A foreign employer without a French establishment registers with the specialised foreign-firms service of URSSAF, which centralises declarations and payments for employers seated abroad. In practice the employer enrols through that service, obtains French employer identifiers, and then declares and pays French contributions on your salary at French rates and on French deadlines. The simplified instrument most small British employers use is the foreign-firms employment title, known in French as the TFE, which bundles the declarations and computes the contributions, but the obligation exists whether or not the employer opts for the simplified title. What matters is that the employment is visible to URSSAF from day one, with the correct French establishment code for an employer without premises, the employee identified by a French social-security number once allocated, and each pay period declared. Employers who keep the worker on a purely British payroll while knowing the work is performed in France accumulate up to three years of undeclared contributions, and the reassessment, when it comes, adds late surcharges and interest that regularly double the pain.
Before any payslip comes the pre-employment declaration, known by its French initials DPAE for déclaration préalable à l’embauche. The statute states that “L’embauche d’un salarié ne peut intervenir qu’après déclaration nominative accomplie par l’employeur auprès des organismes de protection sociale désignés à cet effet.” (article L. 1221-10 du code du travail, version en vigueur). No hiring without a prior nominative declaration: the employer tells the social-protection bodies who is being hired, where and from when, before the first working day. For a British employer hiring a remote worker already resident in France, the DPAE is filed with the foreign-firms service and must precede the agreed start date of French-based work, including the case where an existing London employee relocates to France and continues the same duties from a French home. Omitting the DPAE is not a clerical oversight in French eyes; combined with undeclared payroll, it supports findings of concealed employment, known as travail dissimulé, which carry higher surcharges, possible criminal exposure and exclusion from public contracts. File it early, keep the acknowledgement receipt, and align its date with the remote-work amendment to the contract so the paper trail shows a single coherent start.
Two related duties complete the registration picture. First, the employer must verify that you are entitled to work in France, a point developed in Part II, and keep evidence of your residence document on file, because employing a third-country national without authorisation triggers separate administrative fines and, in serious cases, criminal liability regardless of social-security compliance. Second, the employer must organise coverage for occupational risks from the first day of French-based work, which means joining the appropriate French schemes for work accidents and occupational diseases rather than relying on a British employer’s-liability policy that rarely answers for an accident in a French home. Readers who arrived as students or jobseekers and only later started remote work should also check the general entry route described in our guide on British newcomers, long-stay visas and cartes de séjour, because payroll registration never cures an irregular stay.
B. What must appear on my French payslip and who covers my home-office accident?
Once registered, the employer must issue a French-compliant payslip, known as the bulletin de paie, every pay day. The rule provides that “Lors du paiement du salaire, l’employeur remet aux personnes mentionnées à l’article L. 3243-1 une pièce justificative dite bulletin de paie.” (article L. 3243-2 du code du travail, version en vigueur). A British payslip showing PAYE and National Insurance does not satisfy this duty. The French bulletin must show, among other mandatory items set by regulation, the employer identifiers, the employee’s classification and working time, gross salary, the base and rate of each employee contribution, the employer contributions, net pay, net social amount known as the montant net social, and income-tax withholding at source since France introduced its own pay-as-you-earn system. Overtime, paid leave and any remote-work allowance must appear with their legal labels. The employer may deliver the bulletin electronically if the employee does not object and integrity, availability and confidentiality are guaranteed, but the content requirements are identical on paper or screen. Keep every bulletin indefinitely alongside the British P60s: in a dispute, the French judge compares the two payroll histories month by month, and gaps in the French series are read as undeclared work.
The second half of payroll compliance is the remote-work framework itself. French law defines the arrangement as follows: “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.” (article L. 1222-9 du code du travail, version en vigueur). Remote work is set up by collective agreement or, failing that, by a charter drawn up by the employer after consulting staff representatives where they exist, and otherwise by direct written agreement with the employee. The text must address passage to and return from remote work, control of working time and workload, the time slots when the employer may contact the worker, and access for disabled workers, pregnant employees and carers. A British employer with a single remote worker in France still needs this document: a one-page remote-work amendment referencing the applicable collective-bargaining agreement or, where none applies, the employer’s charter, countersigned before relocation, prevents the most common dispute, namely the worker claiming permanent home-based status while the employer insists the posting was temporary. The remote worker enjoys the same rights as on-site staff, and refusing a remote post is not a ground for dismissal, so draft the amendment as an agreed organisation of work rather than a favour the employer may withdraw overnight.
Cover for accidents follows affiliation automatically and deserves a paragraph of its own because British employers systematically overlook it. The statute provides that “Est considéré comme accident du travail, quelle qu’en soit la cause, l’accident survenu par le fait ou à l’occasion du travail à toute personne mentionnée à l’article L. 311-2.” (article L. 411-1 du code de la sécurité sociale, version en vigueur), and the remote-work article adds an express presumption that an accident at the remote-workplace during working activity is a work accident. A fall on the stairs of a Dordogne farmhouse between two video calls is therefore presumed to be a work accident once French affiliation exists, with daily allowances and medical costs charged to the French occupational-risk branch funded by the employer’s contributions. A British employer’s-liability policy almost never covers that risk on French terms, and without French contributions there is no French cover either, leaving the injured worker to pay and the employer exposed to a fault claim for failing to insure. Declare the home workplace, record working hours or at least the contactable slots, keep the remote-work agreement on file, and ensure the payroll funds the occupational-risk contributions; otherwise an everyday domestic accident becomes an uninsured professional liability.
For readers in Paris and the Île-de-France, two practical points raise the stakes. First, the competent collection body is URSSAF Île-de-France and contribution disputes go to the social chamber of the Paris judicial court, so registrations, payments and appeals must be directed there rather than to a British payroll bureau or to the employer’s London accountant. Second, Paris-level salaries magnify the exposure: French employer charges commonly add roughly four-tenths on top of gross salary, so a 90,000-pound London salary performed entirely from a Paris flat can generate a six-figure euro reassessment once three years of contributions, surcharges and late interest are aggregated. Budget that exposure before URSSAF does it for you, and weigh whether the employer should run the French payroll through a specialised provider or an employer of record while the British contract is reviewed for applicable-law and jurisdiction clauses. Where the non-working partner has no professional income, remember that French universal health cover may bill that partner a separate annual contribution, a point developed in our guide on British early retirees facing the French PUMA charge, and where the arrangement might genuinely be independent work, compare with our analysis of British freelancers and the auto-entrepreneur route before choosing that status.
II. Can I work in France on my current papers, and what if the administration says no?
A. Which residence permit and work authorisation does a British remote worker need after Brexit?
Payroll compliance never cures an irregular stay, and since Brexit British citizens need residence papers like any other third-country national. The entry rule states that “tout étranger âgé de plus de dix-huit ans qui souhaite séjourner en France pour une durée supérieure à trois mois doit être titulaire de l’un des documents de séjour suivants : 1° Un visa de long séjour” (article L. 411-1 du code de l’entrée et du séjour des étrangers et du droit d’asile, version en vigueur), followed by a temporary card, a multi-year card, a resident card or one of the other listed documents. Visitors who work remotely from a holiday home on a 90-day visa-free stay therefore have no route to a French payroll: the employment cannot be declared, the DPAE cannot be filed for a worker with no right to work, and any accident or inspection exposes both sides. The lawful sequence is a long-stay visa obtained before arrival that matches the planned activity, then the corresponding residence document after arrival, with renewal applied for in the final months of validity.
Work authorisation runs alongside residence. The labour code provides that “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.” (article L. 5221-2 du code du travail, version en vigueur). In practice the British remote worker’s employer, even seated in London, must hold a work authorisation covering employment on French territory before the worker starts, unless the worker’s residence document itself authorises work, as do talent passports, intra-group cards for qualifying cases, long-term European Union resident cards and certain family cards. The standard employee route illustrates the mechanism: “L’étranger qui exerce une activité salariée sous contrat de travail à durée indéterminée se voit délivrer une carte de séjour temporaire” (article L. 421-1 du code de l’entrée et du séjour des étrangers et du droit d’asile, version en vigueur), with prior work authorisation as the precondition. Employers who assume that an English-law contract performed from France needs no French authorisation confuse applicable contract law with immigration police: the contract may remain English while the right to perform it in France is French and prior.
The courts treat expiry and proof of renewal strictly, which is why the employer’s file must contain live copies, not promises. In a 2023 ruling, where “Par lettre recommandée du 21 décembre 2016, l’employeur a demandé au salarié de lui faire parvenir son nouveau titre de séjour au plus tard sept jours avant l’expiration de celui en cours de validité” (Cour de cassation, chambre sociale, 29 novembre 2023, pourvoi n° 22-10.004), the court examined whether the dismissal for lack of a valid work document had real and serious cause and which party bore the burden of proving a timely renewal application. The lesson for a British remote worker is organisational: diary the expiry of every visa, card and authorisation at least four months ahead, apply for renewal inside the regulatory window, keep the prefecture receipt known as the récépissé, and send the employer a copy the same day. An expired card without proof of a timely renewal application suspends the right to work, and the employer who lets the worker continue commits a separate offence while gaining no payroll advantage, because contributions remain due on the salary even for the irregular period.
Tax residence completes the papers picture because it decides where the salary is declared even when payroll and immigration are in order. Domestic law provides that “Les personnes qui ont en France leur domicile fiscal sont passibles de l’impôt sur le revenu en raison de l’ensemble de leurs revenus.” (article 4 A du code général des impôts, version en vigueur), and that “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” (article 4 B du code général des impôts, version en vigueur). A British remote worker whose family home, daily presence and professional activity are all in France will normally satisfy at least two of these alternative tests at once. Employment income itself is taxable by nature since “Les traitements, indemnités, émoluments, salaires, pensions et rentes viagères concourent à la formation du revenu global servant de base à l’impôt sur le revenu.” (article 79 du code général des impôts, version en vigueur). Declare the London-paid salary on the French annual return, convert sterling at the applicable yearly rate, and claim the treaty credit for British tax rather than assuming the British deduction settles the matter. The France-United Kingdom treaty of 19 June 2008 allocates employment income to the state where the work is performed and provides relief in the other state, so France as the state of performance taxes with a credit for tax paid in Britain, not an exemption. Keep every P60, payslip and P45: the exchange of information between the two revenue authorities means Paris usually knows the salary already.
B. Detached is not remote: how do you challenge a URSSAF reassessment or a tax bill step by step?
British employers often reach for the wrong label, calling the arrangement a posting, known in French as détachement, when it is in fact permanent remote work. The statute defines posting narrowly: “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.” (article L. 1262-1 du code du travail, version en vigueur). Temporarily does the work in that sentence: a posting covers a mission with an end date and a return, whereas a British employee who has moved the family home to France and works there indefinitely is not on a mission. The Cour de cassation illustrated the difference in a 2023 case where “M. [B] a été engagé par la société Leonardo Finmeccanica, établie à [Localité 4] (Italie), le 12 octobre 1979.” and “Il a été détaché, en France, auprès du GIE ATR, à compter du 1er juillet 1995.”, before the employer ended the posting and ordered a return to Italy which the employee contested (Cour de cassation, chambre sociale, 5 avril 2023, pourvoi n° 21-21.318). A posting has a beginning, an end and a return; remote work has a home office and no return date. Misclassifying a permanent remote worker as posted invites URSSAF to recharacterise the whole period and bill contributions with surcharges, and the mirror-image rule confirms the logic: workers genuinely sent abroad by a French employer stay under French cover only where the employer undertakes to pay all contributions, since “les travailleurs détachés temporairement à l’étranger par leur employeur pour y exercer une activité salariée ou assimilée, rémunérée par cet employeur, sont soumis à la législation française de sécurité sociale à la condition que l’employeur s’engage à s’acquitter de l’intégralité des cotisations dues.” (article L. 761-2 du code de la sécurité sociale, version en vigueur).
When the reassessment letter arrives, act in the statutory order and inside the deadlines printed on the document. Start with the observations phase if the control is still open: reply to the inspector’s letter point by point, with the DPAE receipt, the foreign-firms registration, the French bulletins, the remote-work agreement and the work diary showing where each week was performed. If a formal demand follows, lodge the amicable appeal to the URSSAF appeals commission, known as the commission de recours amiable, setting out each ground separately: wrong affiliation period, days genuinely worked outside France with travel proof, erroneous pay base, duplicate British contributions covered by a posting certificate where one truly exists, or misapplied surcharge rates. A 2025 ruling shows why precision matters: where “à l’issue d’un contrôle portant sur la période du 1er janvier 2012 au 31 décembre 2014, l’URSSAF de [Localité 2] (l’URSSAF) a notifié à la société [3] (la société) une lettre d’observations en date du 27 mars 2015 puis une mise en demeure le 23 décembre 2015.” (Cour de cassation, deuxième chambre civile, 20 mars 2025, pourvoi n° 23-12.264), the court examined whether the worker had genuinely remained under a foreign employer’s authority during the disputed period. Judges decide affiliation document by document, so the party that proves where each working day happened usually wins. If the commission confirms the bill, appeal to the social chamber of the judicial court within the stated time limit, and pay or secure the undisputed portion where required so interest stops running on it. For the tax side, the parallel route is a formal claim to the tax office identifying year, tax and legal ground, then the administrative court if the claim fails. Never ignore the letter: silence converts a contestable bill into an enforceable one.
Conclusion
Living in France while working remotely for a British employer after Brexit means accepting two cumulative logics: France insures the work because it is performed there, and France taxes the salary for the same reason. Registration with the foreign-firms service, a DPAE filed before the first French working day, French bulletins de paie every month, a written remote-work framework under Article L. 1222-9, and occupational-risk cover from day one turn an invisible London payroll into a lawful French one. Residence papers and work authorisation must match the payroll, the treaty tie-break will normally confirm French residence with a credit for British tax rather than an exemption, and posting is reserved for genuine temporary missions with a return date. The rulings cited above confirm that URSSAF controls of foreign employers are valid and that affiliation disputes are decided on the facts of where work happened. Organise the proof now, diary, travel records, bulletins on both sides and any coverage certificate, regularise before the control where possible, and challenge any bill ground by ground through the amicable commission and then the court. A remote arrangement set up correctly costs contributions but buys certainty; one left on a London-only payroll buys a reassessment.