You live in London, New York, Dubai or Singapore and your company is registered in France. The first year closes, your French accountant (expert-comptable) sends you a corporate income tax computation you barely understand, and a few months later the French tax administration (Direction générale des finances publiques, DGFiP) debits instalments from the company account on dates you never chose. Then comes the letter every foreign founder dreads: a reassessment (redressement) adding tens of thousands of euros, or a penalty for a return filed late. Corporate income tax (impôt sur les sociétés, IS) is the tax that decides whether your French venture keeps its profits, because it applies to the company itself, it is paid in advance in quarterly instalments, and it carries automatic interest and surcharges when anything goes wrong. This guide explains, in plain English and with the exact legal texts quoted word for word, how much French corporate income tax your company owes, which profits France is legally allowed to tax when the owners live abroad, how the quarterly instalments (acomptes) and the final balance (solde) work from another country, what the extra branch tax costs a foreign company operating through a French branch (succursale), which penalties apply when a deadline is missed, and how to challenge a reassessment step by step without boarding a plane. Every French acronym is explained on first use, every decisive rule is tied to its statute, and the operating advice reflects how these files are actually handled from abroad.
I. How much corporate income tax your French company owes and when it must pay from abroad
A. What the 25 percent rate applies to and which profits France can legally tax
French corporate income tax is a single tax, levied at a single standard rate, on the company as a separate taxpayer. Article 219, I of the French General Tax Code (Code général des impôts, CGI) states the rate in one sentence: “Le taux normal de l’impôt est fixé à 25 %.” The standard rate of the tax is set at 25 percent. The same article provides separate reduced rates for defined cases, including long-term capital gains on certain holdings, but the starting point for every forecast is 25 percent of taxable profit. When your accountant tells you the company made 200,000 euros of taxable profit, the baseline corporate tax cost is therefore 50,000 euros before any adjustment, credit or reduced rate that the file can document. Founders who budget with the income-tax rates of their home country, or who confuse the 25 percent company rate with the dividend withholding that applies later when profits leave France, build their entire business plan on a wrong number, and the error surfaces at the worst moment, when the balance is already due.
The tax is assessed once, in the name of the company, on all of its French taxable activity together. Article 218 of the General Tax Code provides: “l’impôt sur les sociétés est établi sous une cote unique au nom de la personne morale ou association pour l’ensemble de ses activités imposables en France.” Corporate income tax is assessed under a single assessment in the name of the legal person for all of its taxable activities in France. In practice this means your société par actions simplifiée (SAS, the flexible joint-stock company most foreign founders choose) or your société à responsabilité limitée (SARL, the limited-liability company with stricter transfer rules) files one corporate tax return covering everything it does in France, and the fact that the shareholders or the president live abroad changes nothing about the assessment itself. If you have not yet chosen the vehicle, our guide to choosing between an SAS, an SARL, a branch and a subsidiary in France compares the options before registration, because the vehicle determines who signs the return, who is personally exposed, and whether the branch tax described below applies to you at all.
The decisive question for a group with cross-border activity is which profits France is entitled to tax in the first place. Article 209, I of the General Tax Code sets the territoriality principle: taxable profits are determined “en tenant compte uniquement des bénéfices réalisés dans les entreprises exploitées en France, de ceux mentionnés aux a, e, e bis et e ter du I de l’article 164 B ainsi que de ceux dont l’imposition est attribuée à la France par une convention internationale relative aux doubles impositions.” Only profits earned in businesses operated in France are taken into account, together with defined categories of French-source income and profits whose taxation is attributed to France by a double-tax treaty. Three consequences follow for a founder living abroad. First, the profits of your French company from its French operations are taxable in France even if every shareholder lives outside France and every board decision is taken by video call from another country; the company is French, its business is operated in France, and your residence is irrelevant. Second, profits earned by your foreign parent company outside France are not swept into the French base simply because the parent owns the French subsidiary; each company is taxed on its own French-operated profits. Third, where a treaty allocates taxing rights between France and your home country, the treaty wording decides the borderline cases, which is why the same commercial margin can be fully taxable in France under one treaty and partly taxable elsewhere under another, and why the treaty must be read before any restructuring moves functions, risks or contracts across the border.
Translate this into a forecasting discipline. Ask your accountant to show, on one page, the accounting profit, the tax adjustments (non-deductible expenses added back, deductible items subtracted), the resulting taxable profit, and the 25 percent applied to it, with each adjustment labelled by its legal basis. Keep the contracts that prove where value is created — client contracts, employment contracts, office lease, transfer-pricing documentation for transactions with the foreign parent — because when the administration later questions the boundary between French profit and foreign profit, the file that wins is the file with contemporaneous documents, not the file with after-the-fact explanations. Distance punishes disorganisation: the founder abroad who receives a monthly reporting pack with the profit-and-loss account, the cash position and the tax-provision estimate never discovers the tax bill on the day it is due, while the founder who waits for year-end statements learns the number when it is already payable.
B. How quarterly instalments and the final balance work when you pay from another country
French corporate income tax is not paid once a year after the return; it is paid in advance, in four instalments computed from last year’s profit, with a final settlement after closing. Article 1668, 1 of the General Tax Code provides: “L’impôt sur les sociétés donne lieu au versement, au comptable public compétent, d’acomptes trimestriels déterminés à partir des résultats du dernier exercice clos.” Corporate income tax gives rise to payment to the competent public accountant of quarterly instalments determined on the basis of the results of the last closed financial year. The same article fixes the calendar without ambiguity: “Les paiements doivent être effectués au plus tard les 15 mars, 15 juin, 15 septembre et 15 décembre de chaque année.” Payments must be made no later than 15 March, 15 June, 15 September and 15 December of each year. Each instalment is therefore a fraction of the tax computed on the previous year’s result, paid on a fixed date whether or not the current year is going well. A company that paid 50,000 euros of tax on last year’s profit pays four instalments totalling roughly that amount during the current year, even if the current year collapses; the correction comes later, at settlement, not by skipping an instalment on your own initiative.
New companies get breathing room for their very first year. Article 1668, 1 of the General Tax Code states: “Les sociétés nouvellement créées ou nouvellement soumises, de plein droit ou sur option, à l’impôt sur les sociétés sont dispensées du versement d’acomptes au cours de leur premier exercice d’activité” Newly created companies, or companies newly subject to corporate income tax, are exempt from paying instalments during their first year of activity. You therefore pay nothing during year one and settle the whole first-year bill at the end, which helps cash flow but creates the classic trap: founders who enjoyed year one with no instalments forget that year two brings both the settlement of year one and four instalments based on it, a double charge in a single year that has sunk more than one startup treasury. Plan the cash from registration day, not from the first debit notice.
Settlement follows a strict timetable set by Article 1668, 1 of the General Tax Code: that a founder abroad must put in the diary immediately. The statute continues: a settlement (“liquidation”) of the tax due on the results shown in the return: “S’il résulte de cette liquidation un complément d’impôt, il est acquitté lors du dépôt du relevé de solde au plus tard le 15 du quatrième mois qui suit la clôture de l’exercice.” And: “Si l’exercice est clos au 31 décembre ou si aucun exercice n’est clos en cours d’année, le relevé de solde est à déposer au plus tard le 15 mai de l’année suivante.” The tax due on the results is settled on the basis of the return; any additional tax is paid when filing the balance statement no later than the 15th of the fourth month following the year-end, or 15 May of the following year where the year ends on 31 December. If the instalments turn out to exceed the final tax, the company is not left waiting: “Si la liquidation fait apparaître que les acomptes versés sont supérieurs à l’impôt dû, l’excédent, défalcation faite des autres impôts directs dus par l’entreprise, est restitué dans les trente jours” Any excess over the tax due, after offsetting other direct taxes owed by the company, is refunded within thirty days. The system is therefore self-correcting, but only for the company that files correctly and on time; the company that files late pays interest on the wait, as explained below.
The return itself has its own deadline, and it falls before the settlement date. Article 223, 1 of the General Tax Code provides: “la déclaration du bénéfice ou du déficit est faite dans les trois mois de la clôture de l’exercice. Si l’exercice est clos le 31 décembre ou si aucun exercice n’est clos au cours d’une année, la déclaration est à déposer au plus tard le deuxième jour ouvré suivant le 1er mai.” The profit or loss return is filed within three months of the year-end, or no later than the second business day after 1 May where the year ends on 31 December. In practice your accountant prepares the liasse fiscale (the bundle of tax forms detailing the accounts and the tax adjustments) and files it online, while you, the director abroad, remain legally responsible for its content. Three operational rules follow. First, close the accounts early enough that the accountant is not preparing the return in the last week of April; distance adds a week to every exchange of documents, so start the closing process in January for a December year-end. Second, keep a funded French bank account with a SEPA direct-debit mandate (mandat de prélèvement SEPA) in favour of the tax office, because instalments and the balance are paid electronically through the company’s professional tax account (compte professionnel on impots.gouv.fr), and a debit rejected for insufficient funds counts as a missed payment with interest from the due date. Third, test access to that professional account before the first deadline: founders abroad routinely discover expired passwords, unreachable one-time codes or a former accountant who kept the credentials, and the administration grants no extra day for a locked account. Our guide to the annual legal calendar of a French company run from abroad puts these tax dates alongside the company-law deadlines — approval of the accounts within six months, filing with the court registry (greffe du tribunal de commerce) — so the whole year fits on one page.
II. When the bill grows: branch tax, interest and penalties, then fighting back from abroad
A. Why a branch pays an extra withholding and how late interest and surcharges pile up
Foreign founders who operate in France without creating a French company use a branch (succursale), which is not a separate legal person but a local establishment of the foreign company, registered in France and taxed here on its French profits. Branches face an additional charge that subsidiaries (SAS or SARL) do not: the branch tax. Article 115 quinquies of the General Tax Code provides: “Les bénéfices réalisés en France par les sociétés étrangères sont réputés distribués, au titre de chaque exercice, à des associés n’ayant pas leur domicile fiscal ou leur siège social en France.” Profits earned in France by foreign companies are deemed distributed, for each financial year, to shareholders having neither their tax domicile nor their registered office in France. The mechanism treats the branch as if it distributed its after-tax profit to the foreign head office each year, and levies the withholding tax (retenue à la source) on dividends on that deemed distribution, on top of the 25 percent corporate tax already paid. The base is precisely defined as “du montant total des résultats, imposables ou exonérés, après déduction de l’impôt sur les sociétés” — the total amount of profits, taxable or exempt, after deduction of corporate income tax — so the withholding bites on the net profit, year after year, whether or not any cash actually leaves France.
The statute itself provides two safety valves, and Article 115 quinquies of the General Tax Code states them as follows: and both must be claimed, they are never granted automatically. First, “la société peut demander que la retenue à la source exigible en vertu des dispositions du 1 et de celles du 2 de l’article 119 bis fasse l’objet d’une nouvelle liquidation dans la mesure où les sommes auxquelles elle a été appliquée excèdent le montant total de ses distributions effectives. L’excédent de perception lui est restitué.” The company may request a recalculation of the withholding to the extent the sums to which it was applied exceed the total of its actual distributions, and the excess collected is refunded to it. A branch that reinvests its profits in France rather than remitting them can therefore recover the part of the withholding that exceeds real distributions, but only by filing the claim with computations and proof. Second, the same applies “dans la mesure où elle justifie que les bénéficiaires de ces distributions ont leur domicile fiscal ou leur siège en France” — where the company proves the beneficiaries are French tax residents — with transfer to them of the corresponding rights. Double-tax treaties add a third layer: many treaties reduce or neutralise this withholding, and European Union law has repeatedly constrained it for companies established in the Union, so the applicable treaty must be checked before paying. The practical lesson is that the branch is usually the most expensive vehicle for retained profits, and founders who chose it for speed at entry should measure, with their adviser, whether converting to a subsidiary still pays once the business is profitable.
Missed deadlines trigger a second layer of cost that applies to every company, branch or subsidiary. Article 1727, I of the General Tax Code provides: “Toute créance de nature fiscale, dont l’établissement ou le recouvrement incombe aux administrations fiscales, qui n’a pas été acquittée dans le délai légal donne lieu au versement d’un intérêt de retard.” Any tax debt that has not been paid within the legal time limit gives rise to late-payment interest. Interest runs month by month from the due date until full payment, and it is added on top of any penalties; paying the principal late but voluntarily stops the clock earlier than waiting for a formal notice, so every week counts. Late filing of the return itself draws separate surcharges. Article 1728, 1 of the General Tax Code provides that failure to file a return showing the basis or computation of the tax within the prescribed time leads to a surcharge on the tax charged of “10 % en l’absence de mise en demeure ou en cas de dépôt de la déclaration ou de l’acte dans les trente jours suivant la réception d’une mise en demeure” — 10 percent with no formal notice, or where the return is filed within thirty days of receiving one — rising to 40 percent beyond that thirty-day grace period and 80 percent where an undeclared business activity (activité occulte) is discovered. A founder abroad who ignores a formal notice because it arrived at the Paris registered office while nobody forwarded the mail can therefore watch a 10 percent surcharge become a 40 percent one without any new decision being taken. Organise mail forwarding from the French address from day one, diary every formal notice with its thirty-day deadline, and file even an imperfect return within the grace period while corrections follow, because a corrected return filed in time costs far less than a perfect return filed a month late.
B. How to challenge a reassessment or a penalty from abroad, step by step
A reassessment in France almost never arrives as a final bill with no warning; it arrives as a reasoned proposal you are invited to answer, and the answer phase is where files managed from abroad are most often lost by silence. Article L. 57 of the Tax Procedures Book (Livre des procédures fiscales, LPF) provides: “L’administration adresse au contribuable une proposition de rectification qui doit être motivée de manière à lui permettre de formuler ses observations ou de faire connaître son acceptation.” The administration sends the taxpayer a reassessment proposal which must state reasons enabling the taxpayer to submit observations or signify acceptance. The proposal (proposition de rectification) sets out, adjustment by adjustment, what the tax office wants to change and why, and it opens a reply period — thirty days as a rule, and the same article adds that “ce délai est prorogé de trente jours” on request received before expiry. From abroad, treat this letter as the single most important deadline in the whole procedure: instruct your accountant the day it arrives, request the thirty-day extension in writing immediately to buy time for translations and evidence-gathering, and answer every adjustment point by point with documents rather than with general denials. An observation letter that concedes the weak points with figures and defends the strong ones with contracts and bank statements regularly reduces the final assessment; a file with no reply moves to collection for the full amount, and the later stages then start from a much worse position.
If the administration confirms the reassessment in whole or in part, the next step is compulsory and must go to the right office. Article R*190-1 of the Tax Procedures Book provides: “Le contribuable qui désire contester tout ou partie d’un impôt qui le concerne doit d’abord adresser une réclamation au service territorial, selon le cas, de la direction générale des finances publiques ou de la direction générale des douanes et droits indirects dont dépend le lieu de l’imposition.” A taxpayer wishing to challenge all or part of a tax concerning them must first send a claim to the local office of the tax administration for the place of taxation. For a Paris-registered company this is the Paris corporate tax office (service des impôts des entreprises, SIE) for its district; for a company elsewhere in the Paris region (Île-de-France), the SIE of the department where the registered office sits. The claim (réclamation contentieuse) must identify the tax, the year, the amount challenged and the legal grounds, attach the supporting documents, and be sent by a traceable channel before the claim deadline, which runs to 31 December of the second year following collection or the event. Founders in Paris and the inner suburbs have one practical advantage worth using: proximity to advisers and to the offices handling the file makes it easy to arrange an in-person meeting with the inspector, and experience shows that a documented claim followed by a calm technical discussion settles more files than correspondence alone. Keep proof of sending and of receipt for everything; from another country, registered electronic delivery or counsel’s office as correspondence address removes the risk of a deadline lost in international mail.
If the claim is rejected expressly or left unanswered for six months, the dispute moves to the administrative court (tribunal administratif) of the place of taxation — for a Paris company, the Paris administrative court. Article R*199-1 of the Tax Procedures Book sets the court deadline without ambiguity: “L’action doit être introduite devant le tribunal compétent dans le délai de deux mois à partir du jour de la réception de l’avis par lequel l’administration notifie au contribuable la décision prise sur la réclamation”. Proceedings must be brought before the competent court within two months of receipt of the notice informing the taxpayer of the decision on the claim. And the same article adds the safeguard for silence: “le contribuable qui n’a pas reçu la décision de l’administration dans un délai de six mois mentionné au premier alinéa peut saisir le tribunal dès l’expiration de ce délai.” A taxpayer who has received no decision within six months may refer the matter to the court once that period expires. Two months from receipt is short when the director lives on another continent, so the reflex must be prepared in advance: as soon as a claim is filed, diary the six-month date and the two-month reaction window, keep a French lawyer designated to file at short notice, and never let the file sleep after a rejection. Throughout, continue paying what is not challenged or negotiate a payment plan (plan de règlement) with the collection office, because court proceedings suspend neither interest nor enforcement on their own, and a separate application for suspension (sursis de paiement) must be made with guarantees where the amounts are large.
Conclusion
A French company run from abroad pays corporate income tax at 25 percent on the profits of its French operations, in four instalments on 15 March, 15 June, 15 September and 15 December computed from the last closed year, with the balance settled by the 15th of the fourth month after year-end and the return filed within three months of closing. Branches add a deemed-distribution withholding on after-tax profits that must be actively reclaimed where the law allows, late payment draws monthly interest, late filing draws 10, 40 or 80 percent surcharges, and every reassessment opens with a reasoned proposal that rewards a fast, documented reply. The founder who keeps one page with these dates, a funded French account with a direct-debit mandate, a tested professional tax account, forwarded mail and a monthly reporting pack from the accountant turns French corporate tax into a predictable cost; the founder who discovers each rule through a penalty letter pays to learn them twice. Put the calendar in place this week, and have the treaty, the transfer-pricing documents and the branch-tax computation reviewed before the next closing, so the figures the company declares are figures it can defend.