You live in London, New York, Dubai or Singapore. From there, you run a French company: you are the président (president) of your SAS, the French simplified joint-stock company, or the gérant (manager) of your SARL, the French limited liability company. The business starts, invoices go out, and then a letter arrives from URSSAF, the French body that collects social security contributions (Union de recouvrement des cotisations de sécurité sociale et d’allocations familiales). It asks for contributions on your director’s remuneration, sometimes for several years at once, with surcharges. You never signed a French employment contract, you never set foot in a French office, and you may already pay social charges in your country of residence. Is the bill legally due?
This guide answers that question in full. It explains first whether French social security can claim you at all when you direct from abroad, because the answer turns on where you actually work, not on the address on your passport. It then explains which French regime your mandate puts you in — assimilé salarié (person treated as an employee for social security without an employment contract) if you preside over a SAS, or travailleur indépendant (self-employed worker) if you are the majority manager of a SARL — and what contributions are calculated on in each case. It then shows how European coordination rules and the A1 certificate of applicable legislation prevent you from paying twice, and how to challenge an URSSAF assessment from abroad. Every decisive rule is quoted from the statute or ruling that states it, as in force or decided on the dates given. French acronyms are explained on first use: URSSAF collects the contributions, the RSI (Régime social des indépendants, the former self-employed scheme whose collection has been absorbed by URSSAF) is mentioned only for older files, the Kbis is the official certificate proving your company is registered, and the Guichet unique is the single online portal where French companies are registered.
I. Do you fall under French social security when you direct from abroad?
A. The rule that decides everything: where you actually work, not where you live
French social security affiliation follows activity on French territory, not residence, nationality or the location of the company’s registered office. Article L. 111-2-2 of the Code de la sécurité sociale (Social Security Code) states it directly: “Sous réserve des traités et accords internationaux régulièrement ratifiés ou approuvés et des règlements européens, 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 ; b) Une activité professionnelle non salariée ; 2° Qui exercent une activité professionnelle à l’étranger et sont soumises à la législation française de sécurité sociale en application des règlements européens ou des conventions internationales.” Read that opening reservation carefully: treaties, ratified international agreements and European regulations come first and can displace French affiliation entirely. That reservation is the legal door through which the A1 certificate and bilateral conventions, examined below, operate.
The general affiliation provision is even wider. Article L. 311-2 of the same code, in the version in force on 14 October 2026, provides: “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.” Three practical consequences follow for a foreign-based director. First, your nationality and the fact that you already draw a pension change nothing. Second, the absence of a written contract or the label the parties gave their relationship does not protect you: what matters is the reality of the work. Third, and most uncomfortable, a director who signs contracts, hires staff, meets clients and takes operational decisions inside France is exercising an activity on French territory even if the director sleeps abroad and holds a foreign passport. Conversely, a president who genuinely manages the French company from abroad — board decisions taken and documented abroad, no operational activity physically performed in France — has a serious argument that no French activity exists to which affiliation could attach. The whole dispute, in practice, is an evidence dispute about where the management work was really done.
The Cour de cassation (France’s supreme court for civil matters), second civil chamber, regularly recalls that affiliation is automatic from the moment the activity is actually exercised, with no additional condition. In a ruling of 5 December 2024, appeal no. 22-17.579, it held: “l’obligation, pour un médecin exerçant à titre libéral, d’affiliation et de paiement des cotisations au régime de protection sociale correspondant à son activité prend naissance par le seul effet de la loi dès que s’exerce l’activité concernée.” The case concerned a self-employed doctor, but the reasoning expresses the general reflex of the chamber: affiliation arises by operation of law (par le seul effet de la loi) as soon as the relevant activity is exercised, and a court may not add conditions the statute does not contain. Two lessons for directors follow. Registration with a fund does not create the obligation; starting the activity does, so a director who was never registered can still be assessed retroactively once URSSAF establishes that management activity took place in France. And symmetrically, formal registration alone does not prove the activity: where the activity was exercised decides.
One common misunderstanding should be removed immediately. An unpaid mandate does not create contributions where there is no base, as Part II explains, but it does not erase the affiliation analysis either: the question remains where any actual management work was performed. If you are appointed president of a SASU (single-member SAS) purely on paper while a French-based team does everything, keep the paper trail showing who really decided what and where. Board minutes signed abroad, travel records, email metadata and the employment contracts of the people who actually run operations in France are the documents URSSAF inspectors and judges read first. Affiliation disputes are won or lost on this file, long before anyone discusses rates.
B. When another country keeps you: European coordination, the A1 certificate and bilateral conventions
Even where French activity exists, France may not be the country entitled to collect. Within the European Union, the European Economic Area and Switzerland, social security coordination rests on a single-legislation principle: one country’s legislation applies at a time, so a cross-border worker never contributes in two Member States on the same activity. That principle is laid down by Regulation (EC) No 883/2004 of 29 April 2004 on the coordination of social security systems, whose official text is published on EUR-Lex, with detailed application rules in Regulation (EC) No 987/2009. For a director living in one State and managing a company in another, the decisive provisions are the posting (détachement) rules, which let a worker sent temporarily to another Member State remain under the home legislation, and the pluriactivity rule in Article 13, which designates the applicable legislation for a person working in two or more States.
The Cour de cassation applied that pluriactivity rule in a dispute that every cross-border director should know. On 30 November 2023, second civil chamber, appeal no. 21-18.251, a majority manager of a SARL affiliated in France as self-employed argued that another legislation applied to him; the URSSAF collection body appeared in the proceedings as the successor of the former self-employed scheme, which the ruling records in these terms: the URSSAF acted “venant aux droits de la caisse du régime social des indépendants,” a useful confirmation that today’s URSSAF bills continue yesterday’s RSI files (full ruling). On the substance, the Court restated the European rule as follows: “la personne qui exerce normalement une activité salariée et une activité non salariée dans différents États membres est soumise à la législation de l’État membre dans lequel elle exerce une activité salariée.” In plain terms, a director who is an employee in the State of residence and self-employed in France for the French mandate is, in principle, subject only to the legislation of the State where the salaried work is performed. The hierarchy matters enormously: salaried activity in the home State defeats French self-employed affiliation for the same period.
The same ruling explains the procedure that makes this protection effective. The worker must proactively trigger it: “La personne qui exerce des activités dans deux États membres ou plus en informe l’institution désignée par l’autorité compétente de l’État membre de résidence.” That designated institution determines the applicable legislation on a provisional basis, notifies the other States concerned, and the determination becomes final if no institution objects within two months. The document that proves the outcome is the A1 certificate, issued by the competent institution of the State whose legislation applies. The Cour de cassation adds that where the dialogue procedure between the competent institutions was never implemented, the court hearing the affiliation dispute must invite the designated institution to initiate it. Practically: apply for the A1 in your State of residence as soon as the French mandate starts, keep every A1 covering every disputed year, and produce it at the first URSSAF letter — not at the court hearing two years later. An A1 produced early regularly closes the file; an A1 requested after the assessment turns the dispute into a long procedural battle about retroactivity and the dialogue between funds.
Posted workers (travailleurs détachés) follow a related but distinct track: an employee sent by a home-State employer to work temporarily in France can remain affiliated at home, with an A1 recording the posting. The conditions are strict — genuine prior affiliation at home, a temporary assignment, no replacement of another posted worker — and each condition is checked against payslips, contracts and the A1 itself. A director who simply appoints himself posted while running a French company full-time from Paris will not survive that control. Outside Europe, there is no general coordination: only bilateral social security conventions, country by country, decide whether French affiliation applies and whether periods aggregate. France has signed such conventions with roughly forty States, including the United States, Canada, the United Kingdom after Brexit, Morocco, Algeria, Tunisia, Israel, Japan, South Korea and others, each with its own personal scope and its own certificate forms. Before assuming anything, check the convention for your exact State on the official site of the CLEISS, the French liaison body for international social security (cleiss.fr), which publishes the country sheets and the applicable forms. Where no convention exists, both countries may lawfully claim contributions on the same income, and the only relief is domestic: foreign tax credits do not cancel French social contributions, because contributions are not income tax.
II. Which French regime applies to you and what does it really cost?
A. SAS president or SARL manager: two opposite social regimes
Once French affiliation is established, the company form decides the regime, and the two standard vehicles point in opposite directions. The president and senior officers of a SAS or single-member SASU belong to the general salaried scheme as assimilés salariés. Article L. 311-3 of the Social Security Code, in the version in force on 14 October 2026, lists them expressly: “Les présidents et dirigeants des sociétés par actions simplifiées et des sociétés d’exercice libéral par actions simplifiées” are among the persons subject to the affiliation obligation of Article L. 311-2. “Assimilated” means this: you contribute to the same general scheme as employees, on the same earnings base, but without an employment contract, so there is no entitlement to unemployment insurance, no paid-leave accrual and no protection against dismissal — the corporate mandate can be revoked under company law while the social coverage simply stops with the remuneration. The SAS itself is built for this separation: the Commercial Code provides that “Pour l’application de ces règles, les attributions du conseil d’administration ou de son président sont exercées par le président de la société par actions simplifiées ou celui ou ceux de ses dirigeants que les statuts désignent à cet effet.” (Article L. 227-1 of the Code de commerce.) The articles of association (statuts) therefore designate who directs — and, indirectly, who will be affiliated.
The SARL splits by shareholding. Managers (gérants) who together hold no more than half of the capital join the same general scheme as SAS presidents. Article L. 311-3, 11°, covers: “Les gérants de sociétés à responsabilité limitée et de sociétés d’exercice libéral à responsabilité limitée à condition que lesdits gérants ne possèdent pas ensemble plus de la moitié du capital social, étant entendu que les parts appartenant, en toute propriété ou en usufruit, au conjoint, au partenaire lié par un pacte civil de solidarité et aux enfants mineurs non émancipés d’un gérant sont considérées comme possédées par ce dernier.” Note the family aggregation: shares held outright or in usufruct by the manager’s spouse, civil partner (pacte civil de solidarité, the French registered partnership) and minor children count as the manager’s own, so a 40% manager married to a 20% spouse is a majority manager. A majority manager leaves the general scheme and becomes a travailleur indépendant (self-employed), contributing on professional income under Article L. 131-6, which provides: “Les cotisations de sécurité sociale dues par les travailleurs indépendants non agricoles ne relevant pas du dispositif prévu à l’article L. 613-7 sont assises sur l’assiette définie à l’article L. 136-3.” (The detailed base is computed under Article L. 136-3.) The manager’s corporate powers are the widest the law allows — “Dans les rapports avec les tiers, le gérant est investi des pouvoirs les plus étendus pour agir en toute circonstance au nom de la société, sous réserve des pouvoirs que la loi attribue expressément aux associés” (Article L. 223-18 of the Commercial Code) — which is precisely why the social regime attaches to the person exercising them.
The cost comparison that foreign founders always ask for has no single number, because the two regimes tax different bases at different rates and the rates move by decree. Stated qualitatively, the economics run as follows. An assimilated employee (SAS president, minority SARL manager) triggers two layers — employer contributions paid by the company and employee contributions withheld from the salary — on the gross remuneration, with the combined weight typically approaching half of the gross in standard cases; in exchange, the coverage mirrors the general scheme (health, family, basic and supplementary pension, daily allowances) minus unemployment insurance. A majority SARL manager pays a single schedule of self-employed contributions on professional income, with no employer layer but no employer either; the total weight is of a comparable order of magnitude on equivalent income, with thinner coverage on some risks and different pension mechanics. Two structural differences matter more than the headline percentages. First, timing: employer-employee contributions follow each payslip monthly or quarterly, while self-employed contributions run on provisional instalments computed from past income with a year-end adjustment, so a profitable year produces a painful catch-up the following year — the classic trap for a founder who maximises early distributions. Second, the tax interaction: the remuneration of a majority SARL manager is taxed under the salary-like rules of Article 62 of the Code général des impôts (General Tax Code) where deductible at company level, while dividends follow their own flat-rate regime; the choice between salary and dividends in each vehicle is examined in depth in our companion analysis of how a SAS president living abroad balances salary against dividends and social charges, and the wider formation sequence — corporate bank account, Kbis registration certificate, VAT number and first hire — is covered in our step-by-step guide to setting up a company in France as a foreign founder.
B. The bill: contribution base, who collects it and how to challenge it from abroad
For directors in the general scheme, the contribution base is the employment income attributed for the period. Article L. 242-1 of the Social Security Code provides: “Les cotisations de sécurité sociale dues au titre de l’affiliation au régime général des personnes mentionnées aux articles L. 311-2 et L. 311-3 sont assises sur les revenus d’activité tels qu’ils sont pris en compte pour la détermination de l’assiette définie à l’article L. 136-1-1.” And the same article fixes the timing rule: “Elles sont dues pour les périodes au titre desquelles ces revenus sont attribués.” The consequence is immediate and often good news for early-stage founders: a SAS president who draws no remuneration for the mandate owes no general-scheme contributions on that mandate for the unremunerated period, because there are no attributed earnings to assess. Dividends received as a shareholder are not mandate remuneration and do not enter this base. But the exemption is strictly proportional: the first euro of president’s salary attributed, even decided retroactively by a shareholders’ meeting regularising past months, reopens contributions for the period to which the earnings are attributed — backdated salary resolutions are therefore one of the most expensive documents a foreign founder can sign without advice. For the self-employed majority manager, the base is the professional income defined by the L. 131-6 / L. 136-3 chain quoted above, assessed year by year with the provisional-instalment machinery, so loss-making years still follow the statutory minimum machinery while profit spikes generate the following year’s adjustment.
Collection belongs to URSSAF, including for formerly RSI-affiliated managers, as the Cour de cassation ruling quoted above confirms. The standard sequence is a formal demand (mise en demeure), then an enforceable order (contrainte), against which the director may lodge an objection (opposition à contrainte) before the court hearing social security disputes. From abroad, three procedural reflexes decide the outcome. First, never let a deadline pass because the letter reached a French address you rarely check: appoint a person or an address in France that forwards immediately, and diary every date on the document. Second, contest in the right order. Challenges to URSSAF decisions go first to the fund’s internal appeal board (commission de recours amiable), and the statute is strict: “Les réclamations relevant de l’article L. 142-4 formées contre les décisions prises par les organismes de sécurité sociale et de mutualité sociale agricole de salariés ou de non-salariés sont soumises à une commission de recours amiable composée et constituée au sein du conseil, du conseil d’administration ou de l’instance régionale de chaque organisme.” The same article adds the time limit: “Cette commission doit être saisie dans le délai de deux mois à compter de la notification de la décision contre laquelle les intéressés entendent former une réclamation.” Two months from notification, not from the day you read the letter: a director living abroad who discovers the assessment late is already out of time unless the notification itself was irregular, which is itself a point to have checked. Third, build the file around the two questions judges actually ask: where was the management activity exercised, and which legislation did the coordination rules designate. That means producing the A1 certificate for each disputed year, the employment contract and payslips proving salaried activity in the home State where relevant, board minutes and travel records locating the real management work, and the company’s registration extracts showing the mandate dates.
One preventive instrument deserves its own paragraph because it reverses the burden of worry: the written ruling procedure (rescrit social). Article L. 243-6-3 of the Social Security Code provides that “Les organismes mentionnés aux articles L. 213-1 et L. 752-4 se prononcent de manière explicite sur toute demande d’une personne mentionnée au deuxième alinéa du présent article posant une question nouvelle et non dépourvue de caractère sérieux ayant pour objet de connaître l’application à une situation précise de la législation relative aux conditions d’affiliation au régime général au titre des différentes catégories mentionnées au 1° de l’article L. 200-1 ou de la législation relative aux cotisations et contributions de sécurité sociale contrôlées par ces organismes.” A foreign director whose situation is genuinely new and serious — a novel cross-border management pattern, not a routine payroll question — can therefore ask URSSAF in writing, before structuring remuneration, how it will treat the mandate, and the explicit answer binds the fund. The request must describe the precise facts: mandate title, company form, shareholding, country of residence, where each management task is performed, home-State coverage and certificates. A ruling obtained on a sanitised or incomplete fact pattern protects nothing, because the fund is bound only by the situation actually submitted. Combined with an A1 secured in the home State and registration of the company through the official Guichet unique portal, this written ruling is the closest thing to certainty the system offers.
Conclusion
A foreign-based director of a French company faces four sequential questions, and each has a different judge. First, is there an activity on French territory to which affiliation could attach, knowing that residence and nationality are irrelevant and that only real management work counts. Second, does a European regulation or a bilateral convention designate another country’s legislation, in which case the A1 certificate or the convention’s forms, secured early, displace the French claim. Third, which French regime would apply if France is competent: the general salaried scheme for every SAS president and for minority or equal SARL managers, the self-employed scheme for the majority SARL manager, with family share aggregation capable of tipping a minority into the majority. Fourth, on what base and for which periods contributions are due: attributed earnings for the general scheme, professional income for the self-employed, with the two-month internal appeal deadline running from notification. Directors who document where they work, secure their A1 before the first assessment, ask URSSAF for a written ruling on genuinely new patterns and challenge assessments in the right order pay what they owe — and only what they owe. Those who discover the system through a three-year retroactive bill pay for the discovery as well.