You wired 80,000 euros from London, New York or Dubai to your French SAS (société par actions simplifiée, the flexible French company form most foreign founders choose) so it could pay the deposit on its Paris office, fund its first hires and survive until revenue arrives. Your French accountant booked the transfer as an avance en compte courant d’associé, a shareholder current-account advance. Months later, two questions land on your desk at once. Your accountant asks whether the company can pay you interest on that advance and deduct it from its taxable profit. Your own tax adviser asks how France will tax that interest in your hands while you live abroad, and whether a tax treaty changes the answer. Both questions are legitimate, both have precise legal answers, and getting either of them wrong costs real money: non-deductible interest inflates the company’s corporate tax bill, while excess French withholding on your interest quietly eats your return. This guide answers both questions in order. First, what French law allows your company to pay and deduct, with the exact cap rate mechanism the tax office applies. Second, how France taxes that interest when the lender lives outside France, and the practical path to recover any excess withheld at source.

I. Can Your French Company Lawfully Pay You Interest and Deduct It From Its Profit

A. Your Advance Is a Loan, Not Capital: What That Status Gives You and What It Requires

French law treats your shareholder current-account advance as a loan, un prêt, made by you to your company. The Civil Code defines the loan for consumption in these terms: Le prêt de consommation est un contrat par lequel l’une des parties livre à l’autre une certaine quantité de choses qui se consomment par l’usage, à la charge par cette dernière de lui en rendre autant de même espèce et qualité. Money is the classic consumable thing, so the funds you leave at your company’s disposal fit the definition exactly. Because it is a loan, it can carry interest: Il est permis de stipuler des intérêts pour simple prêt soit d’argent, soit de denrées, ou autres choses mobilières. That single sentence is the legal foundation of everything that follows. If you are a foreign individual shareholder, you may even waive interest entirely; the official Entreprendre Service Public page on the subject, verified on 3 July 2026, states that where the partner is a natural person, payment of interest is optional and the partner is free to waive it. The position is different when the lender is a company: an interest-free advance by a corporate shareholder can be reclassified by the tax office as an abnormal act of management, un acte anormal de gestion, because a company is expected to seek a return on the funds it leaves with another business.

Three consequences flow from the loan characterisation, and each of them matters to a founder operating from abroad. First, the monopoly of banks on lending does not block you. French law prohibits anyone other than a credit institution from carrying out credit transactions on a habitual basis, as article L. 511-5 of the Monetary and Financial Code provides, but article L. 312-2 of the same Code expressly carves shareholder advances out of the definition of funds received from the public. Your advance is therefore lawful without a banking licence. The official guidance confirms who may lend: individual shareholders regardless of the size of their holding, company officers such as the président of a SAS or the gérant of a SARL (société à responsabilité limitée, the closed French limited-liability company), commercial companies whose accounts are certified by a statutory auditor acting as an ancillary measure, and even employees within a limit of 10 percent of equity. A foreign founder holding 100 percent or 10 percent of the capital qualifies in the same way as a French resident.

Second, the interest rate must be fixed in writing. Article 1907 of the Civil Code states that interest is either legal or contractual, that contractual interest may exceed the legal rate whenever the law does not prohibit it, and that Le taux de l’intérêt conventionnel doit être fixé par écrit. In practice the rate is set either in the company’s articles of association, les statuts, or in a separate current-account agreement, une convention de compte courant, signed between you and the company. Put it in writing before interest starts running. An undocumented advance creates two risks at once: the company may struggle to prove the agreed rate in a tax audit, and any interest you informally take without stipulation falls under the rule that interest paid without stipulation can neither be reclaimed nor set against capital. If no duration is agreed, your advance is a loan of indefinite duration, and that detail controls repayment: the courts hold that Une avance en compte courant étant un prêt consenti à la société, tout associé est en droit d’en exiger le remboursement à tout moment s’il est à durée indéterminée à moins qu’il n’en soit disposé autrement par les statuts ou la convention des parties. Those are the exact words of the Paris Court of Appeal, Pôle 5, Chamber 8, in its judgment of 14 April 2026, RG No. 24/01215, available at https://www.courdecassation.fr/decision/69df2233cdc6046d474800ed, confirming a judgment that had ordered a SAS to repay four shareholders their advances of 6,700, 6,700, 7,140 and 3,660 euros. The Court of Cassation itself endorsed the same principle when it approved an appeal court’s statement that sauf stipulation contraire, tout associé était en droit d’exiger à tout moment et peu important les motifs de sa demande le remboursement du solde de son compte courant, dès lors que l’avance ainsi consentie constituait un prêt à durée indéterminée, in its judgment of 12 February 2025, Commercial Chamber, appeal No. D 23-17.483, available at https://www.courdecassation.fr/decision/67ac552691acc6fabdb2cf0f. If you lent money to your own French company and the company now refuses to return the principal itself, that companion problem is treated in our guide on recovering a blocked shareholder loan from abroad; this article deals with the interest that loan produces.

Third, the flow only runs one way. Your company may not lend to you in return. In a SARL, article L. 223-21 of the Commercial Code prohibits managers and non-corporate shareholders from contracting loans from the company, arranging an overdraft in current account or otherwise, or having the company guarantee their obligations, on pain of nullity of the contract. In a public limited company, article L. 225-43 of the same Code imposes the same prohibition on directors, the chief executive and their family circle. The SAS borrows from the rules applicable to public limited companies to the extent they are compatible with its own regime, so the same caution applies. A debit, overdrawn shareholder account, where the books show that you owe the company money, is therefore prohibited and must be regularised by an actual repayment, not by netting it against future interest. Keep the two directions strictly separate: your credit balance can earn interest, a debit balance in your favour is unlawful.

B. The Two Deductibility Locks and the Annual Loan Declaration Your Company Must File

Interest your French company pays you is a financial charge, and as such it reduces the company’s taxable profit, but only if two cumulative conditions are met. The official Entreprendre Service Public page states them plainly: the share capital must be fully paid up, meaning the shareholders must have actually paid all of their contributions to the capital, and the interest rate applied must not exceed the reference rate, le taux de référence, measured gross before tax. The page adds three warnings that foreign founders frequently discover too late. Where the agreed rate exceeds the reference rate, the excess portion is simply non-deductible. Each current account is examined separately, with no offsetting between an excess recorded on one account and headroom on another. And the advance counts as a loan for reporting purposes, so the company must file an annual loan-agreement declaration, on official form cerfa No. 10142, no later than the filing date of its annual results return. Miss that declaration and you hand the tax office an easy adjustment in an audit, even where the economics were correct.

The reference rate is the heart of the calculation, so understand how it works. It is the average rate on variable-rate loans granted by credit institutions to French companies with an initial duration above two years, published periodically, and the rate that counts is the one in force on your company’s financial year-end date, la date de clôture de l’exercice. The official table reproduced on the service-public page shows how it moves: for financial years closing between 31 May and 29 June 2025 the cap stood at 5.32 percent, it then declined month by month through 5.16, 5.07, 4.97, 4.81, 4.73 and 4.64 percent, reaching 4.55 percent for years closing between 31 December 2025 and 30 January 2026, and settling at 4.33 percent for closings from 30 June through 29 September 2026. The detailed doctrine behind the cap is published by the tax administration at BOI-BIC-CHG-50-50-30 on the interest-rate limit. Take a concrete example. Your SAS closes its year on 30 September, the reference rate for that closing window is 4.33 percent, and your current-account agreement sets interest at 6 percent on a 100,000 euro advance. The company may deduct 4,330 euros; the remaining 1,670 euros stays in taxable profit and therefore bears corporate tax, impôt sur les sociétés, at the standard rate. If instead the agreement sets 4 percent, the full 4,000 euros is deductible provided the capital is fully paid. The planning lesson is direct: negotiate the contractual rate against the expected reference rate for your closing date, not against your home-country base rate, and revisit it if market rates move your closing window into a lower cap.

The tax office polices the boundary between genuine shareholder loans and disguised distributions, and one judgment shows how painful reclassification can be. In a case decided by the First Civil Chamber of the Court of Cassation on 9 September 2020, appeal No. K 19-16.047, available at https://www.courdecassation.fr/decision/5fca4731af6750a4d42a30f5, the facts recorded by the court were that l’administration fiscale a considéré, d’une part, que M. B…, associé et gérant de cette société, avait bénéficié d’avances laissées à sa disposition, sans intérêts, sur son compte courant d’associé en 2006, 2007 et 2008, d’autre part, que les sommes de 127 013,29 euros et 126 866,71 euros inscrites en 2008 au crédit de son compte courant devaient être regardées comme des revenus distribués. Interest-free advances left at a shareholder’s disposal over several years, followed by large credits to his account, were treated as distributed income with personal income tax and social contributions to match. The lesson for a foreign founder runs in both directions. Document every movement on the account, pay or formally waive interest each year rather than letting balances drift, and never use the current account as an informal salary substitute. The full official guidance on operation and taxation is published in English at https://entreprendre.service-public.gouv.fr/vosdroits/F32966?lang=en, and it should sit next to your loan agreement in the company’s files. For the wider picture of setting up and running the vehicle that pays this interest, see our pillar guide on setting up a company in France as a foreign founder, which explains the Kbis company identity card issued by the greffe, the court clerk’s office, the bank account, VAT and the first hire.

II. What French Tax Hits Your Interest Abroad and How You Recover the Excess

A. How France Taxes the Interest in Your Hands as a Non-Resident Lender

Once the company has paid and, within the cap, deducted the interest, the second tax layer falls on you as the recipient. French domestic law treats interest on a shareholder current account as income from movable capital, des revenus de capitaux mobiliers. For an individual lender, the official guidance states that the interest is subject either to the single flat-rate levy, le prélèvement forfaitaire unique, described on the official page as applying from 31.4 percent, or, on election, to the progressive income-tax scale, le barème progressif de l’impôt sur le revenu. Where the lender is itself a company subject to French corporate tax, the interest arrives as financial income taxable to corporate tax; where the borrowing company elected for personal income-tax transparency, the interest is taxed as industrial and commercial profit. These are the domestic rules for residents, and they already show why the contractual rate matters twice: the portion above the reference rate is non-deductible for the company yet fully taxable in your hands, a double cost you should price before signing the agreement.

Living outside France adds the withholding layer. When the debtor company is established in France and the individual or corporate lender is domiciled or headquartered abroad, France imposes its levy at source: the French company withholds the tax when it pays the interest and remits it to the French Treasury, so you receive the net amount. That is the point at which most foreign founders first realise something was taken: the bank transfer from the SAS arrives lighter than the gross interest computed under the agreement, and the difference sits with the French tax office. The exact domestic levy and its interaction with your situation depend on your status, individual or corporate lender, and on whether any exemption applies, but the structural point is constant. France taxes first at source, and it is then up to you to invoke a more favourable rule if one exists.

The more favourable rule, where it exists, is the double-tax treaty between France and your state of residence. France maintains one of the densest treaty networks in the world, and its treaties with the United States, the United Kingdom and most EU and Gulf states contain a dedicated article on interest. Treaty articles on interest typically do one of three things: they cap the tax the source state, here France, may levy on interest paid to a resident of the other state, often at a rate well below the domestic levy; they allocate the exclusive right to tax to the residence state for certain categories of interest; or they define which payments count as interest in the first place. The treaty does not apply automatically. To benefit from the capped rate at the time of payment, the French paying company must hold proof of your foreign tax residence, usually a residence certificate issued by your home tax authority for the year of payment, and apply the treaty rate on that basis. Where the full domestic levy was already withheld, the treaty benefit is recovered afterwards through a reclaim filed with the French administration. The entry portal for non-resident taxpayers is published in English at https://www.impots.gouv.fr/non-residents-france, with detailed pages on reporting obligations at https://www.impots.gouv.fr/internationalenindividual/tax-liability-and-reporting-obligations-france-non-residents. Before counting on treaty relief, read the interest article of the specific treaty between France and your country of residence, because caps, exclusions for certain instruments and anti-abuse clauses differ from one treaty to another, and the wrong treaty article cited in a reclaim discredits the whole file.

Two related charges deserve a deliberate check before you conclude the rate question. First, social contributions, les prélèvements sociaux, attach to investment income of persons within the French social-security system, and their interaction with non-residence and with EU coordination rules is fact-specific; do not assume they apply, and do not assume they do not, without advice anchored in your residence and affiliation status. Second, the corporate lender case carries its own trap. If the foreign entity lending to your French company is related to it, transfer-pricing rules require the interest rate itself to be at arm’s length, and an excessive rate can be challenged independently of the deductibility cap. An interest-free advance from a related company invites the abnormal-act-of-management challenge described in Part I. Keep the rate defensible on both fronts: below or at the French deductibility cap for the company’s sake, and justifiable as a market rate for the lender’s sake.

B. The Recovery Path From Abroad: Compute, Document, Then Claim

Recovering excess French tax on your interest follows a disciplined sequence, and each step produces a document you will need for the next. Start with computation. Reconstruct the interest your agreement entitled you to, period by period, and test it against the reference rate for your company’s closing date using the official table. Separate the deductible portion from the excess, because the excess explains part of any unexpectedly high corporate tax bill and confirms that the company’s return was filed correctly. Then reconcile the gross interest with the net amount actually received: the gap is the French levy suffered at source, and it should appear in the company’s payroll-style tax filings and in the annual loan declaration on cerfa No. 10142. If the company never filed that declaration, regularise it first, because a reclaim built on undeclared loans invites the administration to question the loan itself rather than the rate of withholding.

Move next to documentation. Assemble the file exactly as a French tax inspector expects to see it: the signed current-account agreement showing the rate, the duration and the repayment terms, with article 1103 of the Civil Code in mind, since lawfully formed contracts take the place of law between the parties and your agreement is your first line of defence; the company accounts and bank statements proving the advances and the interest payments; the certificate of residence from your home tax authority covering the year of payment; and the text of the interest article of the applicable treaty. Where the administration disputes the existence or the terms of the advance, the case law quoted in Part I protects a properly documented lender: an undated, unsigned arrangement is treated as an indefinite-duration loan repayable at any time, which helps for the principal but weakens you on the rate, while a signed agreement specifying the rate locks in both. Contracts are enforced as written, and gaps are filled against the party who left them.

File the claim with the competent French service for non-residents, through the portal above, setting out the domestic levy suffered, the treaty article invoked, the capped rate it provides and the arithmetic of the refund requested, with each supporting document attached. Expect the administration to verify three things: that the underlying advance genuinely qualifies as a shareholder loan within the carve-out for shareholder funds rather than a disguised contribution or a banking transaction caught by the lending monopoly; that the interest does not contain a non-deductible excess dressed up as treaty-protected interest; and that the residence certificate genuinely covers the payment year. If the claim is rejected, the rejection itself is an appealable decision, and the validity of any termination-style reasoning the administration offers is tested under the general law of contractual breach and resolution only insofar as it touches the underlying agreement. Throughout, keep the two disputes separate in your correspondence: the deductibility of the interest is the company’s dispute with the French tax office, while the withholding suffered at source is your dispute as the foreign lender. Mixing them in a single letter gives the administration an excuse to answer the easier one and ignore the harder one.

One final boundary keeps the whole structure safe. Never convert a tax frustration into a corporate-law violation. If the reclaim is slow, do not have the company lend you the disputed amount while you wait, because the prohibitions in article L. 223-21 for the SARL and article L. 225-43 for the public limited company render such reverse loans null, and nullity destroys the interest computation built on them. Likewise, do not stop declaring the annual loan form on the theory that the dispute suspends compliance; it does not. The founder who documents, declares and claims in good order almost always recovers what the treaty promises. The founder who improvises gives the administration the very arguments it needs to keep the money.

Conclusion

Interest on your shareholder advance to your French company is lawful, deductible within a precise cap and taxable in your hands with treaty relief available, but every step is conditional. Fix the rate in writing in the statutes or a signed agreement, keep it at or below the reference rate for your closing date, ensure the capital is fully paid, file the annual loan declaration on cerfa No. 10142, withhold correctly at payment and claim treaty relief with a residence certificate and the exact treaty article. The judgments and official guidance cited above draw the boundaries clearly: your advance is an indefinite-duration loan repayable at any time unless otherwise agreed, its interest is deductible only within the published cap, and undocumented or interest-free movements risk reclassification as distributions. Run the computation before each year-end, not after the audit notice, and the shareholder loan remains what it should be: the cheapest, most flexible bridge finance your French company will ever use.

Need a quick opinion on your case

If your French company pays you interest on a shareholder loan, or withholds French tax on it while you live abroad, send the loan agreement and the last interest computation for review. Telephone consultation within 48 hours with an advocate of the firm. Call +33 6 46 60 58 22, Maître Reda Kohen, or write via the contact page. The firm advises foreign founders in Paris and throughout Île-de-France.