You formed a company in France from abroad, received the Kbis, the official company identity certificate issued by the greffe, the clerk of the commercial court, and opened a bank account. Then a new question arrives from your accountant, usually in French and usually urgent: how will the company pay its impôt sur les sociétés, commonly shortened to IS, the French corporate income tax? If you live in London, New York, Dubai or Singapore, this tax can feel distant and abstract until the first payment deadline passes and interest starts running. This article explains, for a foreign founder or foreign parent company doing business in France, what the French company owes, at what rate, and above all how the money is paid on time from abroad: the four quarterly instalments called acomptes, the annual tax return known as the liasse fiscale, the final balance paid with the relevé de solde, and the surcharges that punish delay. The rules sit mainly in the Code général des impôts, abbreviated CGI, the French General Tax Code, and the procedure is now almost entirely online through the company’s professional account on impots.gouv.fr, the website of the French tax administration. Understanding the calendar before the first year-end is what separates a routine filing from an expensive catch-up, because in France corporate tax is largely paid before the final bill is known, and the balance only corrects the difference.

Three ideas organise everything that follows. First, the company itself is the taxpayer: the IS taxes the French company’s own profits, computed under French rules, whatever the nationality or residence of its shareholders. Second, the standard rate is 25 percent, applied to profits from business carried on in France. Third, payment is spread across the year in instalments calculated from the previous year’s results, with a single annual return that settles the account. Keep these three ideas in mind and every form, deadline and penalty described below falls into place. Where French terms appear, each is explained at first use, and every decisive legal statement is anchored to the exact article that states it, quoted word for word.

I. What your French company owes: who pays IS, on which profits, and at what rate

A. Which companies pay IS and on which French profits

The starting point is the list of taxpayers. Article 206 of the CGI provides that “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”, which means that public limited companies, partnerships limited by shares and private limited companies that have not chosen partnership taxation are liable to corporate tax whatever their business purpose (Article 206, Code général des impôts). In practice, this covers the two vehicles foreign founders use most: the SAS, the société par actions simplifiée, a flexible joint-stock company whose shareholders set most of the rules in the articles of association, and the SARL, the société à responsabilité limitée, a more rigid private limited company with stronger statutory protections for shareholders. If you are still hesitating between these forms, our guide to choosing between a SAS, a SARL, a branch and a subsidiary sets out the liability and tax differences before you incorporate. A French branch of a foreign company, called a succursale, is likewise taxed in France on the business it carries on there, while a mere liaison office that conducts no commercial activity of its own stays outside the tax, which is why the vehicle must be chosen before the tax analysis begins.

The second boundary is territorial. France taxes the profits of businesses operated in France, not the worldwide profits of the group. Article 209 of the CGI states that “en tenant compte uniquement des bénéfices réalisés dans les entreprises exploitées en France”, meaning that only profits earned through operations carried on in France are taken into account (Article 209, Code général des impôts). For a foreign founder, the consequence is direct: the Paris or Lyon operating company pays IS on its French trading profits, while the profits your group earns abroad through genuinely separate foreign establishments remain outside the French base, subject always to the exact allocation of functions, assets and risks between the entities. Transfer pricing, the arm’s length pricing of transactions between related companies, is the enforcement tool the administration uses when it suspects French profits have been shifted abroad, and the contracts between your French company and its foreign parent deserve the same care as the tax returns themselves.

The third structural point is unity of assessment. Article 218 of the CGI provides that “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”, so the tax is assessed in a single amount, in the name of the legal entity, covering all of its taxable activity in France (Article 218, Code général des impôts). Your company therefore files one corporate return and pays one tax even if it runs several establishments or business lines in France, and the Service des impôts des entreprises, abbreviated SIE, the local business tax office that manages the company’s file, is the single correspondent office for assessment and collection. New companies receive a useful breathing space at the start: where a company closes no accounts during its first calendar year of activity, it files no provisional return and is taxed on the results from the start of activity to the close of its first financial year, and the official guidance adds that no instalments are due where the IS is below 3,000 euros, where the company is newly created and in its first year of activity, or where it has newly become liable to the tax (see Impôt sur les sociétés: taux, déclaration, paiement). This first-year tolerance is practical rather than generous: it simply defers the first payments until the business exists on paper and the administration can measure it.

Two traps for foreign owners follow from these principles. The first is believing that a loss-making or dormant French company owes nothing and needs no filing. The duty to declare exists independently of the amount due, and a company with no activity still has returns to file and, depending on the case, minimum formalities to complete, failing which the failure-to-file penalties described in part II apply to a zero base but create a record of non-compliance that complicates every later step, from bank financing to a future sale. The second trap is mixing the company’s money with the founder’s money. Because the company is the taxpayer, taxed in its own name on its own profits, shareholder advances, called comptes courants d’associés, and management fees charged by the foreign parent must be documented, priced and declared as what they are; undocumented transfers are routinely reclassified as hidden distributions with personal tax consequences for the recipient. Clean separation of the company’s accounts from the founder’s wallet is not an accounting preference, it is the precondition for every figure on the return.

B. The 25 percent rate and how the taxable profit is computed

The headline rate is simple. Article 219 of the CGI states that “Le taux normal de l’impôt est fixé à 25 %”, the standard rate of the tax is set at 25 percent, and it adds that “Pour le calcul de l’impôt, le bénéfice imposable est arrondi à l’euro le plus proche”, meaning the taxable profit is rounded to the nearest euro for the computation (Article 219, Code général des impôts). For a foreign founder used to headline rates that come with pages of exceptions, the French presentation is refreshingly blunt: take the taxable profit computed under French accounting and tax rules, multiply by 25 percent, round, and that is the gross tax before credits. Certain categories of profit follow their own rates inside the same article, and two are worth knowing by name because they recur in purchase and sale transactions: the same article provides that “Le montant net des plus-values à long terme fait l’objet d’une imposition séparée au taux de 15 %”, so net long-term capital gains are taxed separately at 15 percent, while qualifying innovation income determined under the patent-box mechanism is carved out of the standard base and taxed separately at 10 percent. These are computations your expert-comptable, the French chartered accountant, will run; your job as owner is to understand that the 25 percent is the default, not the ceiling and not the floor, and to ask, before signing a share or asset deal, which pocket of the result each gain will fall into.

The profit to which the rate applies is not the accounting profit copied unchanged from the financial statements. It is the accounting result corrected by a long series of tax adjustments: non-deductible expenses added back, such as the company share of the contribution sociale de solidarité, certain fines and penalties, and the portion of interest that exceeds the thin-capitalisation limits; deductible items subtracted, such as dividends received under the parent-subsidiary regime within the statutory fraction; and loss carry-forwards applied within their caps. The bridge between the two figures is the tax return itself, the liasse fiscale, filed electronically with detailed schedules, and the administration’s power to audit that bridge is the reason contemporaneous documentation matters more than ex post explanations. One article governs the framework: Article 221 of the CGI provides that “L’impôt sur les sociétés est établi dans les mêmes conditions et sous les mêmes sanctions que l’impôt sur le revenu (bénéfices industriels et commerciaux, régime d’imposition d’après le bénéfice réel ou d’après le régime simplifié)”, so corporate tax is assessed under the same conditions and sanctions as income tax on industrial and commercial profits, under the actual-earnings or simplified scheme (Article 221, Code général des impôts). Concretely, the company is taxed on real profits, not on turnover or on a flat estimate, and the same arsenal of penalties that applies to individual business income backs the corporate return.

Three practical consequences deserve emphasis for owners managing from abroad. First, the choice of financial year-end, the date de clôture, drives the entire payment calendar described in part II, and a 31 December year-end aligns the company with the standard cycle while a different date shifts every instalment and the balance date; the choice is made in the articles or by shareholder decision and should be coordinated with the group’s consolidation timetable before the first year closes. Second, tax credits earned in France, such as research credits where the company genuinely conducts eligible research, reduce the tax computed at 25 percent euro for euro within their limits, which is why innovative subsidiaries document their projects as they go rather than reconstructing them at audit. Third, dividends the French company later pays to its foreign shareholders are a separate tax event, governed by withholding rules and tax treaties, and are not deductible from the company’s own base; the 25 percent is paid first, the distribution comes second, and confusing the two stages is the most common forecasting error in cross-border groups. Our companion piece on dividends paid to non-resident individuals, withholding and refunds follows the money one step further, from the taxed profit to the shareholder’s pocket.

II. How you pay IS on time from abroad: instalments, the annual return and the price of delay

A. Four instalments, one annual return and one balance, all filed online

France collects corporate tax as it goes. Article 1668 of the CGI states that “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”, meaning the tax gives rise to quarterly instalments paid to the competent public accountant, calculated from the results of the last closed financial year (Article 1668, Code général des impôts). The mechanism is deliberately backward-looking: because the current year’s profit is unknown while it is being earned, the company prepays the current year by reference to the previous year’s bill, and the annual return later corrects any difference. For a company whose year ends on 31 December, the most common case, each instalment is a fraction of the previous year’s tax, and the official guidance confirms that every instalment is paid on a fixed date, 15 March, 15 June, 15 September and 15 December, with the exact sequence depending on the company’s closing date (see Impôt sur les sociétés: taux, déclaration, paiement). Each payment is made electronically with the relevé d’acompte n° 2571, the standard instalment slip, from the company’s professional account on impots.gouv.fr (see relevé d’acompte n° 2571). A recent official notice illustrates the rhythm: companies were reminded that the instalment due by 16 March 2026 counts as the first, second, third or fourth instalment depending on where their year-end falls in the cycle, which shows that the calendar turns on the closing date, not on a single universal quarter.

The instalment system has three humane exceptions, and foreign founders use all three. No instalments are due where the previous IS bill is below 3,000 euros, which covers most companies in their first profitable years; where the company is newly created and in its first year of activity; and where the company has newly become liable to the tax for its first taxable period. Growth therefore phases the obligation in: a company that starts small pays nothing in advance, then begins instalments once its measured profit crosses the threshold, and the administration, not the company, draws the line from the filed returns. The corollary is that a profitable year creates next year’s instalments automatically, and founders who celebrate a first strong result sometimes forget that the same result, divided into four, becomes the prepayment calendar of the following year. Budget the instalments as a standing cost from the second profitable year onward, and instruct the accountant to confirm the base of each instalment in writing before it is paid.

The annual return closes the loop. Article 223 of the CGI provides that “Les personnes morales et associations passibles de l’impôt sur les sociétés sont tenues de souscrire les déclarations prévues pour l’assiette de l’impôt sur le revenu en ce qui concerne les bénéfices industriels et commerciaux”, so companies liable to the tax must file the returns prescribed for the assessment of business profits, and it continues: “Toutefois, la déclaration du bénéfice ou du déficit est faite dans les trois mois de la clôture de l’exercice”, meaning the declaration of profit or loss is filed within three months of the year-end (Article 223, Code général des impôts). The administration grants an additional fifteen calendar days where the return travels through the electronic filing channel, the téléprocédure, which in practice every company uses. The return produces either a balance to pay or an overpayment: the company pays the solde, the remaining balance, with the relevé de solde n° 2572, the standard balance slip, electronically, no later than the 15th of the fourth month after year-end, or by 15 May of the following year where the year ends on 31 December or where no year closed during the calendar year. Where the instalments exceeded the final tax, the excess is refunded automatically within thirty days of filing the balance slip, or may be credited against the first instalment of the following year, at the company’s choice. From abroad, the operational lesson is organisational: give the expert-comptable a complete file at least two months before the return deadline, mandate the SIE direct-debit or calendar the electronic payments with alerts in your own time zone, and keep proof of every filing, because the penalties below attach to the missing paper as much as to the missing money.

B. What delay costs: late interest, surcharges and recovery from abroad

Delay is priced on two meters that run simultaneously. The first is interest. Article 1727 of the CGI states that “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”, so any tax debt handled by the tax administration and not paid by the legal deadline bears late interest, to which the code’s penalties may be added (Article 1727, Code général des impôts). The interest accrues month by month from the missed deadline until payment, without any reminder being necessary, which means a founder who discovers the omission six months later owes six months of interest on top of the tax, automatically. The second meter is penalties on the missing paperwork and the missing payment. Article 1728 of the CGI provides that “Le défaut de production dans les délais prescrits d’une déclaration ou d’un acte comportant l’indication d’éléments à retenir pour l’assiette ou la liquidation de l’impôt entraîne l’application, sur le montant des droits mis à la charge du contribuable”, meaning failure to file a return or document needed to assess or compute the tax triggers a surcharge on the duties charged to the taxpayer (Article 1728, Code général des impôts). The rate starts at 10 percent of the duties where no formal notice was needed or the late return arrives quickly, and rises where the administration must chase the company, which is precisely the position of a foreign-managed company whose mail goes unanswered. Alongside it, Article 1731 of the CGI provides that “Donne lieu à l’application d’une majoration de 5 % tout retard dans le paiement des sommes qui doivent être versées aux comptables de l’administration fiscale”, so any delay in paying sums due to the administration’s accountants draws a 5 percent surcharge (Article 1731, Code général des impôts). Interest plus surcharges can therefore add a visible percentage to a bill that was manageable on its due date, and the surcharges apply per failure, so a missing return and a missing payment stack.

Recovery does not stop at the border. The SIE issues a mise en demeure, a formal notice to pay, then a titre exécutoire, an enforceable collection instrument, served for foreign debtors through international channels, and the French administration participates fully in European mutual assistance for the recovery of tax claims, so a founder who has returned to another Member State is not beyond reach. Within France, the administration may also use third-party notices served on the company’s bank, the avis à tiers détenteur, which oblige the bank to hand over the seized sums up to the amount owed, a measure founders typically discover when the online banking balance drops without warning. The defence against all of this is procedural discipline rather than litigation: file even when the result is zero or a loss, pay even a disputed instalment on time and claim back later, because paying under reservation preserves cash-flow arguments while stopping interest, whereas refusing to pay funds the other side’s meter. Where the assessment itself is wrong, the claim, called a réclamation, follows strict time limits and formal content requirements, and it is lodged with the SIE before any court action, which is why the first reflex on receiving an unexpected notice should be to forward it to the accountant the same day, not to wait for the next board meeting.

Distance creates three specific risks that resident managers never face, and each has a concrete fix. The first is mail: tax notices arrive at the company’s registered office, the siège social, and a founder abroad who reads them weeks late loses the short windows for claims and oppositions; the fix is a reliable domiciliation with same-day scanning or a mandate giving the accountant electronic access to the professional account, where every assessment and notice is mirrored. The second is the bank: a French business account held by a non-resident manager can be slower to operate for tax direct debits, and a rejected electronic payment counts as unpaid on the due date; the fix is to test the payment channel with the first small instalment and keep a funded balance before each of the four fixed dates. The third is language: the forms, notices and online help are in French, and machine translation of a mise en demeure routinely misses whether the document is a simple reminder, a formal notice starting a deadline, or an enforceable instrument; the fix is never to guess the nature of a tax letter but to have it classified by a professional within days. Companies that put these three routines in place pay the same tax as everyone else and nothing more; companies that do not pay for the learning curve in interest and surcharges.

Conclusion

French corporate tax, seen from abroad, is a system of prepayment and settlement rather than a single annual bill. The company is taxed in its own name at 25 percent on the profits of its French operations, it prepays that tax in four quarterly instalments computed from the previous year’s results, it declares the final profit within three months of year-end, and it pays the balance or receives the refund that the return reveals. Interest and surcharges price every delay without prior warning, and recovery follows the debt across borders. None of this requires your presence in France: it requires a competent expert-comptable engaged before the first year-end, a professional tax account monitored as closely as the bank account, four dates entered in your own calendar with alerts, and the discipline to file and pay first and dispute second. Put that organisation in place in the first year, when the new-company exemptions still shelter you, and the IS becomes what it should be for a growing business: a predictable cost of operating in France, measured in advance, paid on time, and never a surprise in the mailbox.