You live in London, New York, Dubai or Singapore. Your company is incorporated there, pays tax there, and has no French subsidiary and no French branch. Then a letter arrives from the French tax office: your company is said to carry on business in France, the profits made here are taxable here, and several years of corporate tax, VAT and penalties are now claimed from you. This scenario is one of the most expensive traps for foreign founders, because the French administration does not need you to have registered anything in France to tax you in France. What matters is the economic reality of what your business does on French soil: an office, a warehouse, a sales team, a manager who decides everything from Paris, or even a French company that acts as your dependent arm. This article explains how France decides that a foreign company is taxable here, through the two cumulative lenses of domestic law and tax treaties, how the administration prices the profit it attributes to France, and how you can challenge the reassessment from abroad within the applicable deadlines. The leading court decisions are quoted word for word from their official texts, and every acronym is explained, so that a non-French reader can follow the reasoning and act before the deadlines expire.
Choosing the right vehicle at the start remains the best prevention: our guide to choosing between a SAS, a SARL, a branch and a subsidiary in France describes each structure, and this article covers what happens when the tax office considers that you have created a taxable presence without choosing any of them. The French acronyms below are defined once and then used throughout: IS (impot sur les societes, French corporate income tax), TVA (taxe sur la valeur ajoutee, French VAT), CGI (Code general des impots, the French tax code), LPF (Livre des procedures fiscales, the tax procedure code), RCS (Registre du commerce et des societes, the trade and companies register), RNE (Registre national des entreprises, the national register of companies), Kbis (the official registration certificate proving a French company exists), BODACC (Bulletin officiel des annonces civiles et commerciales, the gazette publishing company registrations), URSSAF (the body collecting French social security contributions), BOFiP (Bulletin officiel des finances publiques, the official published comments of the tax administration), and CAA (cour administrative d’appel, the administrative court of appeal that hears tax disputes at second instance).
I. How France decides your foreign company is taxable here: domestic business test and treaty permanent establishment
France taxes foreign companies through two successive filters. The first filter is domestic law: Article 209, I of the CGI provides that corporate tax takes into account only profits made by businesses operated in France, in the exact statutory words, en tenant compte uniquement des bénéfices réalisés dans les entreprises exploitées en France. The second filter is the applicable double tax treaty, which generally reserves taxation of business profits to the home State unless the foreign company has a permanent establishment in France. Both filters must be examined, because a company can satisfy the domestic test yet be protected by a treaty, or fall outside the treaty protection and face full French taxation. Understanding each filter separately is the only way to answer the letter from the tax office precisely.
A. Your company is taxed in France when it operates a complete business here, even with customers abroad
The domestic test does not ask where your customers are. It asks where the business is actually run. Article 206, 1 of the CGI first sets the personal scope: sont passibles de l’impôt sur les sociétés, quel que soit leur objet, les sociétés anonymes, les sociétés en commandite par actions, les sociétés à responsabilité limitée n’ayant pas opté pour le régime fiscal des sociétés de personnes, together with cooperatives and their unions. Once a foreign company carries on an activity in France through a fixed presence, it enters this scope for the profits connected with France, even if it was incorporated abroad and has never filed a French return.
The decisive question is whether the operations performed outside France form a complete commercial cycle detached from France, or whether management and direction sit in France. The administrative court of appeal of Toulouse gave a textbook application of this test on 4 July 2024 in the Globeliner case, concerning a trading company that bought pharmaceutical products abroad and resold them to a Moroccan laboratory without the goods ever passing through France. The court recalled the statute first: Sous reserve des dispositions de la presente section, les benefices passibles de l’impot sur les societes sont determines (…) en tenant compte uniquement des bénéfices réalisés dans les entreprises exploitées en France (…). It then examined the facts: l’intégralité des tâches de direction et de gestion y afférentes étaient effectuées à Sète (Hérault), où la société avait son siège et son seul établissement. Because every management task was performed at the company’s seat and sole premises in Sete, the foreign sales could not be treated as detached from the French activity and did not constitute a complete commercial cycle abroad. The court concluded: Par suite, c’est à bon droit que l’administration a estimé que les résultats de la société Globeliner tirés de son activité de courtage au profit de la société de droit marocain Laboratoire Pharma 5 étaient soumis à l’impôt sur les sociétés sur le fondement du I de l’article 209 du code général des impôts.
For a foreign founder, the lesson is direct. If you run everything from France while invoicing from a foreign company, the fact that the goods never transit through France and that the customers are abroad does not protect you. The administration looks at where direction, negotiation, purchasing decisions and day-to-day management happen. A founder who moves to Paris and keeps piloting a Dubai, Delaware or Hong Kong company from a Paris apartment, with French-based staff preparing quotes, negotiating with suppliers and organising deliveries, reproduces exactly the pattern the Toulouse court taxed: the seat of effective management in France makes the profits French taxable profits. Conversely, a genuinely foreign-managed business whose French contacts are limited to occasional travel and remote sales calls has a real argument that no business operated in France exists, provided the evidence of foreign management is documented and consistent.
Practical proof matters as much as legal theory. The tax office builds its file from leases, employment contracts, email headers, travel records, server logs, CRM data, and statements from customers and suppliers. Founders should therefore keep the mirror file from day one: board minutes showing where decisions are taken, travel calendars, employment contracts stating the place of work, and a clear allocation of functions between the foreign head office and any French presence. When the administration notifies a reassessment, the dispute is won or lost on these documents far more often than on abstract legal argument, because the courts verify where tasks were actually performed, as the Toulouse court did street by street down to the town of Sete.
B. Your treaty protects you only without a permanent establishment, and a dependent French arm can create one
Even when domestic law would tax the profits, the double tax treaty between France and the company’s home State usually takes precedence and forbids France from taxing business profits unless the company has a permanent establishment in France. A permanent establishment means either a fixed place of business, such as an office, workshop or warehouse through which the activity is carried on, or a dependent agent in France who habitually concludes contracts in the name of the foreign company. An independent agent acting in the ordinary course of its own business does not create a permanent establishment, but a company that works almost exclusively for the foreign group, follows its instructions and negotiates contract terms for it, may be recharacterised as dependent. This is where many informal arrangements collapse: a French service company, a so-called independent sales agent or a logistics partner that in reality functions as the French arm of the foreign business.
The Conseil d’Etat, France’s supreme administrative court, confirmed this analysis on 4 April 2018 in the PetO Ferrymasters case, decision number 399884, which concerned a British transport group operating in France through a French sister company. The court described the French company’s role in detail and held: La SAS PetO Ferrymasters constitue ainsi, alors même qu’elle ne dispose en propre d’aucun moyen de transport, une structure permanente et apte, compte tenu de ses effectifs et de ses moyens matériels et logistiques, à réaliser de manière autonome l’ensemble des prestations de commissionnaire de transports litigieuses. The absence of its own trucks was irrelevant, because the staff, agencies and commercial organisation allowed it to perform the disputed services autonomously. The court drew the consequence without hesitation: C’est donc sans erreur de droit et sans erreur de qualification juridique des faits que la cour a jugé que la société requérante disposait, à travers cette société, d’un établissement stable en France.
The same decision shows how profits are then attached to the French establishment. The court approved attributing the business done with French customers to the French establishment rather than to the British head office: the lower court a pu, sans commettre d’erreur de droit, rattacher l’activité exercée auprès des clients français à celui-ci et non au siège situé au Royaume-Uni. Although that case concerned VAT, the reasoning on what constitutes a stable establishment and on attributing customer-facing activity to it is routinely transposed to corporate tax disputes, and inspectors cite it in establishment cases well beyond transport. Founders should read it as a warning about labels: calling a French entity an independent provider, a commission agent or a subcontractor does not decide the issue. The administration and the courts examine autonomy in fact, exclusivity, who finds the customers, who negotiates prices, and who organises performance.
Treaty protection also has limits that surprise foreign groups. Some treaties contain specific clauses, and anti-avoidance rules can deny treaty benefits where the arrangement is artificial. In the Globeliner litigation itself, the company invoked the tax treaty between France and the United Arab Emirates to block the reassessment, and the court held that the treaty argument was inoperative against the denial of deductions under Article 238 A of the CGI, before confirming the corporate tax on the merits. The practical message is that a treaty is a shield, not a cloak: it works when the substance matches, meaning real foreign management, real foreign premises and real foreign decision-making. It does not work when the French footprint performs the complete business and the foreign company is an invoicing shell. Before answering the administration, identify the exact treaty, its definition of permanent establishment, its business-profits article and any limitation clauses, because the whole dispute may turn on one paragraph of that treaty.
II. What the French reassessment costs and how to challenge it from abroad before the deadlines expire
Once the administration considers that a permanent establishment exists, it reconstructs a French taxable profit, applies corporate tax with late-payment interest and penalties, frequently adds VAT and sometimes payroll reassessments, and notifies the whole package in a formal procedure with strict deadlines. Each stage offers a defence opportunity, but each deadline missed closes a door permanently. The second part of this article prices the risk and maps the challenge route step by step for a founder who does not live in France.
A. How the tax office prices your French profit, adds transfer pricing corrections, interest and penalties
The administration first reconstructs the profit attributable to the French establishment as if it were a separate enterprise dealing at arm’s length with the head office. It analyses the functions performed in France, the assets used there and the risks assumed there, then allocates the corresponding share of the group’s margin. Where the French arm was remunerated as a low-risk service provider while performing sales, negotiation and customer management, the inspector typically increases its margin by comparison with independent companies performing similar functions. This is where Article 57 of the CGI enters the picture for transactions between the French establishment and related foreign entities: les bénéfices indirectement transférés à ces dernières, soit par voie de majoration ou de diminution des prix d’achat ou de vente, soit par tout autre moyen, sont incorporés aux résultats accusés par les comptabilités. Management fees charged by the foreign parent, royalties for the brand, and cost-plus service agreements are examined line by line, and any amount exceeding an arm’s length price is added back to the French taxable base.
VAT frequently doubles the bill. If the French establishment supplies services to French customers from France, the VAT is due in France and must be charged, collected and remitted by the supplier, with the corresponding filings. The PetO Ferrymasters decision illustrates the mechanism: the administration refused to treat the French customers as liable for the tax and held that the British company itself had to pay it, because the services were supplied from its French stable establishment to French customers. Founders who assumed that reverse charge or a foreign VAT number solved everything discover that a French establishment changes the place-of-supply analysis entirely. Undeclared French VAT over several years, with interest and penalties, can exceed the corporate tax reassessment itself, particularly in services where margins are high and input VAT is low.
Interest and penalties then compound the principal. Late-payment interest accrues month by month from the original due date of each tax, and penalties are scaled to behaviour: a standard increase for simple omission, a higher increase where the administration demonstrates deliberate failure, and the highest scale for fraud or concealed activity, which is precisely the qualification often alleged when a foreign company operated in France for years without registering, filing or paying. Criminal exposure exists in the most serious cases of concealed taxable activity, alongside potential director liability for the company’s tax debts in specific situations. Beyond money, an unregistered establishment creates cascading irregularities: no RCS registration, no Kbis, no compliant French invoices, no VAT returns, and employees engaged without French payroll, each carrying its own sanctions from URSSAF and the labour courts.
Quantifying the worst case early is essential, because it frames every later decision, including whether to negotiate a settlement, whether to regularise spontaneously, and how much security to post if collection is enforced abroad through mutual assistance between tax administrations. Ask your adviser for a year-by-year table showing reconstructed profit, corporate tax, VAT, interest and each penalty layer, so that the settlement discussion and the litigation strategy rest on numbers rather than impressions. Founders who discover the reassessment when a foreign bank account is seized or a treaty partner administration requests information understand too late that French tax claims travel across borders: quantify first, then choose the defence.
B. How to answer the audit, file the claim and regularise the structure without missing a deadline
The audit procedure itself provides the first line of defence. On-site verification of accounts follows the rules of the LPF: Les agents de l’administration des impôts vérifient sur place, en suivant les règles prévues par le présent livre, la comptabilité des contribuables astreints à tenir et à présenter des documents comptables. No accounting verification or personal tax examination may start without prior notice: ne peut être engagé sans que le contribuable en ait été informé par l’envoi ou la remise d’un avis de vérification, stating the years covered and recalling the right to be assisted by counsel, on pain of nullity of the procedure. From abroad, appoint a French representative immediately, because notices are served at the French address or last known address and deadlines run regardless of where you live. Verify the notice, the scope of the years checked, compliance with the adversarial principle during the audit meetings, and the formal proposal of reassessment that must precede any tax notice: procedural defects annul reassessments even when the substance favoured the administration.
The substantive answer must then be built document by document. Demonstrate where each function was performed, who decided what and where, with board minutes, contracts, travel records, employment files and IT evidence. If a treaty applies, map each element of the administration’s case onto the treaty’s definition of permanent establishment and show why the French presence stays below the threshold, for example because the agent is genuinely independent, works for several principals, bears its own risk and does not habitually conclude contracts in your name. If the establishment is difficult to deny, shift the fight to quantification: challenge the functional analysis, propose comparable companies supporting a lower margin, justify management fees with time records and cost calculations, and invoke the treaty article on business profits to exclude profits that have no connection with the French activity. The Globeliner and PetO Ferrymasters decisions show that courts decide these cases on concrete findings about who did what and where, so every assertion in your reply must attach to an exhibit.
After the tax notice arrives, the claim procedure opens under Article L190 of the LPF: Les réclamations relatives aux impôts, contributions, droits, taxes, redevances, soultes et pénalités de toute nature, établis ou recouvrés par les agents de l’administration, relèvent de la juridiction contentieuse lorsqu’elles tendent à obtenir soit la réparation d’erreurs commises dans l’assiette ou le calcul des impositions, soit le bénéfice d’un droit résultant d’une disposition législative ou réglementaire. File the administrative claim within the statutory deadline stated on the notice, generally by 31 December of the second year following collection or the event giving rise to the claim, and frame it as both a factual and a legal challenge: no establishment under domestic law, no permanent establishment under the treaty, and in the alternative excessive quantification. If the administration rejects the claim expressly or by silence, the dispute moves to the administrative court, then to the CAA and potentially to the Conseil d’Etat, with each level re-examining facts and law. Parallel treaty remedies exist: the mutual agreement procedure allows the two States’ tax authorities to resolve double taxation arising from the dispute, and it can be requested alongside domestic litigation within its own deadlines.
Finally, fix the structure for the future while the past is litigated. The French government’s official business portal states the rule plainly: À titre de structure permanente de la société étrangère, la succursale est toutefois soumise au régime fiscal français, while adding the treaty relief that Ses bénéfices ne feront pas l’objet d’une double taxation dans le pays d’origine si ce dernier a conclu avec la France une convention bilatérale afin d’éviter cette double imposition. Depending on the outcome of the substance analysis, register a branch (succursale, a permanent structure without its own legal personality) or incorporate a subsidiary (filiale, a fully separate French company, typically a SAS), file through the online single counter for business formalities, obtain French VAT registration, set compliant transfer pricing, and align employment with French payroll. The English-language service-public page for company registration formalities confirms that once the filing is made, the business is automatically entered in the national register of companies (RNE) and at RCS, which gives you the Kbis extract banks, customers and administrations require. Regularisation does not erase the past, but it stops the penalties from growing, restores the ability to invoice compliantly, and demonstrates good faith that courts and inspectors notice when settlement is discussed.
Conclusion
A letter from the French tax office asserting that your foreign company is taxable in France is not a clerical error to ignore from abroad. Domestic law taxes profits made by businesses operated in France, tax treaties add a permanent-establishment test that a dependent French arm can satisfy, and the courts verify these questions against concrete evidence of who worked where, as the Globeliner and PetO Ferrymasters decisions demonstrate word for word. The reassessment prices the French profit, corrects related-party dealings, adds VAT, interest and behaviour-scaled penalties, and travels across borders through administrative assistance. Answer fast and in writing: check the audit notice, appoint a French representative, prove where functions were performed, plead the exact treaty paragraph, quantify precisely, file the administrative claim before its deadline, and register a compliant structure so the future stops feeding the dispute. Handled early with documents, a permanent-establishment case is a technical dispute to be won or settled on terms; handled late or from silence, it becomes a multi-year liability with compounding interest.