A foreign-owned company can agree a French commercial lease before it has a French management team, a French bank account or a long operating history. The rent clause may therefore receive less attention than the registered office, the Kbis or the first VAT filing. That is risky when the lease says that the rent will rise automatically by a fixed percentage every year, without an end date or a ceiling. The issue is not the nationality of the shareholder. It is whether the clause fixes the original price of the premises or creates a one-way rent review that bypasses the mandatory French rules governing commercial leases.

On 3 September 2026, the French Court of Cassation, Third Civil Chamber, issued decision no. 25-14.904, published in the Bulletin, concerning a 1.5% annual minimum increase. The Court distinguished a valid stepped rent agreed from the beginning from an unlimited automatic upward review during the life of the lease. For a foreign parent, French subsidiary, branch or overseas investor, that distinction determines what should be checked, what can be challenged, and how an overpayment claim should be documented. This article sets out the legal test, a practical calculation method, the evidence to preserve, the procedural route and the safeguards needed before withholding any rent.

I. Can a French commercial lease impose an automatic fixed rent increase on a foreign-owned company?

A. What does the 3 September 2026 Court of Cassation ruling change for a foreign tenant?

The case is directly useful for a company that operates from France under a bail commercial, meaning a French commercial lease. The tenant was not protected because of its corporate form, and the landlord was not criticised because the tenant had foreign shareholders. The decisive feature was the wording and operation of the rent clause. The Court examined a provision that waited until after two complete years, then required annual revision on the following 1 January, with a guaranteed net increase of 1.5% per year. The verified case facts state: Le bail commercial comprend une clause stipulant que le loyer sera, au terme de la deuxième année entière suivant la prise de date d’effet du bail, révisé annuellement au 1er janvier suivant, avec une garantie d’un taux d’augmentation net de 1,5 % par an.

In practical terms, the clause did more than record a rent of €10,000 for year one and €10,150 for year three. It kept operating after the initial pricing period and guaranteed a further increase, even if the statutory review mechanism did not justify it. The tenant asked the court to declare the clause “deemed unwritten” and sought repayment of rent paid during the previous five years. The official decision records that the Court of Cassation set aside the Lyon Court of Appeal judgment and sent the case back to a differently composed panel of that court. This is a cassation ruling, not a spreadsheet ruling: the final amount still depends on the lease, the relevant index, the statutory valuation and the evidence.

The Court’s central distinction is exact and important for an international business negotiating premises from abroad. It wrote: A la différence d’un loyer progressif par paliers, ladite clause, en ce qu’elle stipule accessoirement que le loyer augmentera périodiquement, automatiquement et forfaitairement, et ce sans prévoir de limite de plafond ou de durée alors même qu’un bail commercial ne prend pas automatiquement fin à son terme conventionnel, ne détermine pas le prix initial du bail mais organise sa révision automatique à la seule hausse, pouvant excéder la variation des indices. The English meaning is that a predetermined rent schedule can set the original price, while an additional promise of periodic, automatic and fixed increases with no cap or duration can become a one-way rent review. A landlord cannot change that legal character merely by calling the provision a “guaranteed increase”, “minimum increase” or “rent progression”.

The ruling applies to the legal tenant named in the lease. That may be a French simplified joint-stock company, known as a société par actions simplifiée or SAS; a French private limited company, known as a société à responsabilité limitée or SARL; a French branch of a foreign company; or, in some transactions, the foreign company itself. A subsidiary and its parent are separate legal persons. A parent’s guarantee does not automatically make the parent the tenant, and a branch’s foreign head office does not remove the need to identify the French premises, the lease signatories and the entity that paid the invoices. Those distinctions matter when the tenant sends a notice, asks for an accounting correction or brings proceedings.

The controlling question is therefore functional. Does the clause determine, at the date of the lease, a sequence of rents that ends at a price known or objectively determinable in advance? Or does it promise that rent will rise at regular intervals, only upwards, without a contractual stopping point and without the statutory conditions for review? The Court answered that question in the second direction for the clause before it. Its operative reasoning states: Une telle clause a ainsi pour effet de faire échec aux règles d’ordre public de la révision du loyer, et doit être réputée non écrite.

“Deemed unwritten” does not mean that the whole commercial lease disappears. It means that the offending stipulation is treated as if it had not been written, subject to the court’s application of the law to the full agreement. The tenant should not assume that every past increase is automatically refundable, nor should the landlord assume that an invoice proves a valid review. A party must identify the clause, its legal effect, the periods affected, the payments made and the relief requested. A foreign board should also preserve the decision and the calculation in English for the parent company while keeping the original French lease and notices intact.

The decision is especially relevant where a foreign company signed a lease through a local adviser who treated the annual percentage as an ordinary budget assumption. A board-approved business plan may have incorporated a fixed escalation, but accounting treatment cannot validate a clause that defeats mandatory law. Conversely, a genuine stepped rent negotiated as part of the initial bargain may remain enforceable even though its amounts increase over time. The contract, its annexes and the chronology are more important than the label placed in a financial model.

B. How should a company distinguish a valid stepped rent from an unlawful one-way review?

Start with the statutory framework. Article L. 145-37 of the French Commercial Code recognises review of commercial lease rent, but subjects it to the safeguards in the following provisions. The verified text says: Les loyers des baux d’immeubles ou de locaux régis par les dispositions du présent chapitre, renouvelés ou non, peuvent être révisés à la demande de l’une ou de l’autre des parties sous les réserves prévues aux articles L. 145-38 et L. 145-39 et dans des conditions fixées par décret en Conseil d’Etat. The words “at the request of either party” and the express reference to Articles L. 145-38 and L. 145-39 matter. A private clause cannot silently turn that regulated mechanism into an automatic annual guarantee of an increase.

Article L. 145-38 supplies the ordinary triennial review framework. It provides: La demande en révision ne peut être formée que trois ans au moins après la date d’entrée en jouissance du locataire ou après le point de départ du bail renouvelé. La révision du loyer prend effet à compter de la date de la demande en révision. It then limits the triennial adjustment by reference to the commercial rent index or the index for tertiary activities, unless a material change in local commercial factors has produced the legally required effect on rental value. A clause that increases rent every year regardless of a request, timing or legal valuation must be tested against this framework.

Article L. 145-33 provides the valuation reference: Le montant des loyers des baux renouvelés ou révisés doit correspondre à la valeur locative. The same article lists the characteristics of the premises, their permitted use, the parties’ respective obligations, local commercial factors and neighbouring prices. For a foreign company, the permitted use can be critical: a logistics site, office, retail unit, laboratory or hospitality premises may have different valuation evidence. The location, access, services, works and restrictions should be recorded before someone claims that a percentage in an annex is the entire legal answer.

Article L. 145-39 deals with a different mechanism, the clause d’échelle mobile, or sliding-scale index clause. Its verified wording begins: En outre, et par dérogation à l’article L. 145-38, si le bail est assorti d’une clause d’échelle mobile, la révision peut être demandée chaque fois que, par le jeu de cette clause, le loyer se trouve augmenté ou diminué de plus d’un quart par rapport au prix précédemment fixé contractuellement ou par décision judiciaire. The clause must be read with the rest of the article, including its annual increase limit. A reference to an index is not the same thing as a fixed annual escalation; however, an index clause that operates only upwards can also create a problem.

The distinction can be expressed in four practical tests:

Provision in the lease	What it usually tries to do	Question for the review
Initial rent schedule with fixed steps	Set the original price for defined periods	Were the dates and levels fixed from the beginning, with an identified final level or coherent end to the schedule?
Triennial statutory review	Adjust rent after the legally relevant period	Was there a request and was the adjustment tested against Articles L. 145-33 and L. 145-38?
Sliding-scale index clause	Move rent with a contractual index	Does the clause allow both directions and respect the rules applicable to the chosen index mechanism?
Automatic fixed annual uplift	Guarantee a continuing upward return	Is there no cap, no duration and no link to a statutory review or objective valuation?

The new decision should be read with Article L. 145-15, which gives the public-order consequence. The verified provision states: Sont réputés non écrits, quelle qu’en soit la forme, les clauses, stipulations et arrangements qui ont pour effet de faire échec au droit de renouvellement institué par le présent chapitre ou aux dispositions des articles L. 145-4, L. 145-32-1, L. 145-37 à L. 145-41, du premier alinéa de l’article L. 145-42 et des articles L. 145-47 à L. 145-54. The wording covers a clause regardless of its form. Calling the provision a “commercial incentive”, a “minimum rent guarantee” or a “corporate group discount reversal” will not settle the analysis if its effect is to defeat the protected rent-review rules.

Contract certainty still has a role. Article 1103 of the Civil Code says: Les contrats légalement formés tiennent lieu de loi à ceux qui les ont faits. That rule explains why a foreign founder should not approach every rent increase as invalid. If the parties genuinely fixed the initial rent in steps, a court may enforce the bargain. But the contract must be legally formed and the specific term must respect mandatory provisions. Article 1104 adds: Les contrats doivent être négociés, formés et exécutés de bonne foi. Cette disposition est d’ordre public. Good faith supports a clear exchange of information, accurate invoicing and a serious attempt to reconcile the accounts; it does not cure a prohibited term.

Read the clause alongside renewal provisions, rent-free periods, fit-out contributions, turnover rent, service charges and tax language. A low first-year rent followed by two clearly stated steps may be part of the original price. A “minimum 1.5% increase every 1 January for the duration of the lease and any renewal” is materially different. A clause that starts as a valid step may also contain a second sentence that creates an unlawful perpetual review. The tenant must isolate the offending mechanism rather than ask a generic question such as “is my commercial lease legal?”

Finally, check amendments and side letters. An overseas parent may have negotiated a lease in English, while the signed French version, rent schedule and landlord invoices are the documents a French court will inspect. A renewal memorandum, rent concession or settlement can alter the analysis. Do not rely on an unsigned translation or on a property manager’s email that paraphrases the clause. Obtain the executed version, every annex, the index definition, the notice provisions and the proof of delivery.

II. How can a foreign company challenge the increase and recover overpaid rent?

A. What evidence, calculation and notice should the tenant prepare?

The first step is an evidence bundle, not an angry email. Collect the signed lease and every amendment; the rent schedule; the premises description and permitted use; invoices and bank statements; rent receipts; annual service-charge statements; index notices; letters from the landlord or property manager; and any rent review request. Add the company’s registration documents and proof of signing authority. A Kbis is the official extract showing a French company’s registration information. The RCS is the Trade and Companies Register, while the RNE is the National Register of Enterprises. The French National Institute of Industrial Property, or INPI, operates the one-stop filing process connected with the RNE. These documents help prove who the tenant was at each stage, especially after a branch-to-subsidiary restructuring or a transfer of the business.

For a foreign parent or branch, preserve the corporate chain as well. Identify the overseas company, its French establishment if any, the legal entity named in the lease, the bank account from which rent was paid and the person who accepted the rent review. If the lease was signed under a power of attorney, retain the authority and the date. If documents are in English, keep the original and obtain a reliable French translation when counsel or the court requires it. The purpose is not to create paperwork for its own sake. It is to prevent a landlord from responding that the wrong company is asking for repayment or that the request lacks evidence of payment.

Then build a month-by-month ledger. For every period, show the contractual base rent, the amount invoiced, the amount paid, service charges and taxes separately, the reason given for the change, and the amount that remains disputed. Do not mix rent with a security deposit, insurance recovery or building charge. Mark the first date on which the fixed annual increase was applied and the date on which the company first objected. A board paper should state whether the calculation is provisional, because a tenant may later discover that an index review or a negotiated step is valid even though another part of the invoice is not.

A simple example demonstrates why the clause must be reconstructed rather than challenged by slogan. Assume that rent is €10,000 per month during the initial period, and a clause then guarantees a 1.5% annual uplift. The monthly figure becomes €10,150 after one uplift, €10,302.25 after the next, €10,456.78 after the third, and €10,613.63 after the fourth. On a compounded basis, the monthly rent reaches about €10,772.85 after five annual uplifts. That does not mean the tenant is entitled to every difference between those numbers and €10,000. It means the ledger identifies the amounts that need to be compared with the legally permitted review, any valid initial step and the rental value of the premises.

The official decision is a warning against treating the five-year figure in that case as an automatic recovery period for every tenant. Article L. 145-60 of the Commercial Code states: Toutes les actions exercées en vertu du présent chapitre se prescrivent par deux ans. Article 2224 of the Civil Code states: Les actions personnelles ou mobilières se prescrivent par cinq ans à compter du jour où le titulaire d’un droit a connu ou aurait dû connaître les faits lui permettant de l’exercer. Those texts cannot be applied mechanically without classifying the claim. A claim asking that a lease clause be deemed unwritten, a claim for rent fixation and a claim for restitution may raise different questions about the legal basis, starting point and interruption of time. Obtain a limitation analysis before sending a broad demand that may omit older periods or misstate the legal claim.

Record any admission or partial concession by the landlord, but do not assume that a friendly exchange extends every deadline. Article 2240 of the Civil Code provides: La reconnaissance par le débiteur du droit de celui contre lequel il prescrivait interrompt le délai de prescription. Whether a particular email is a legal recognition is fact-sensitive. A property manager’s proposal to “review the account” may be a commercial gesture rather than an admission. Keep original emails, attachments, metadata where available and proof of delivery.

The notice to the landlord should be focused. Identify the tenant, the premises, the lease date, the clause, the invoices concerned and the amount provisionally calculated. State that the tenant disputes the automatic fixed increase and reserves all rights concerning a clause that may be deemed unwritten under Article L. 145-15. Ask for the landlord’s legal and accounting basis, the index data, the calculation and a corrected statement. Propose a meeting without waiving the objection. A foreign company can send an English business summary to its parent, but the operative legal notice should be prepared in French or accompanied by a French version so that the landlord and, if necessary, the court have no ambiguity.

Do not overstate the demand. Separate three possible requests: removal of future application of the disputed uplift; recalculation of rent under the valid contractual and statutory mechanism; and repayment or credit of sums already paid. If the lease has a valid initial stepped schedule, accept the amounts that genuinely form part of that schedule while challenging the later perpetual increase. Precision makes settlement more realistic and makes the pleadings easier to prove. It also prevents the landlord from portraying the tenant as trying to rewrite the entire commercial bargain.

Prepare a second calculation using the landlord’s best case. For example, if the landlord says that the rent must be reviewed under a sliding-scale index clause, calculate the result using the index identified in the lease and show which invoices differ. If the landlord relies on a triennial review, record the date of the request and the date it took effect. Article L. 145-38 says that the review takes effect from the date of the request, so an invoice that backdates an increase may need separate examination. The point is to give the decision-maker a choice between a legally supported rent and a clearly quantified excess, rather than a dispute with no agreed baseline.

The remedies available under contract law should also be framed carefully. Article 1217 of the Civil Code lists possible consequences of non-performance, including refusal or suspension of performance, forced performance, price reduction, termination and compensation, with limits on incompatible combinations. The exact text states: La partie envers laquelle l’engagement n’a pas été exécuté, ou l’a été imparfaitement, peut : – refuser d’exécuter ou suspendre l’exécution de sa propre obligation ; – poursuivre l’exécution forcée en nature de l’obligation ; – obtenir une réduction du prix ; – provoquer la résolution du contrat ; – demander réparation des conséquences de l’inexécution. A company should not treat that list as permission to stop paying rent without advice. Commercial lease termination, late-payment clauses and possession risk can be far more damaging than the disputed increase.

B. Which procedure, deadline and business-risk safeguards matter in France?

Article R. 145-23 of the Commercial Code identifies the special route for disputes concerning the price of a reviewed or renewed commercial lease. It provides: Les contestations relatives à la fixation du prix du bail révisé ou renouvelé sont portées, quel que soit le montant du loyer, devant le président du tribunal judiciaire ou le juge qui le remplace. Il est statué sur mémoire. Les autres contestations sont portées devant le tribunal judiciaire qui peut, accessoirement, se prononcer sur les demandes mentionnées à l’alinéa précédent. La juridiction territorialement compétente est celle du lieu de la situation de l’immeuble. In English, “tribunal judiciaire” is the civil court of first instance, “sur mémoire” means that the parties proceed through written legal memoranda, and the relevant territorial court is tied to where the property is located.

This rule makes the property address more important than the foreign parent’s headquarters. If the premises are in Paris, the tenant should identify the competent Paris court and the correct procedure for the specific claim. If they are elsewhere in Île-de-France, such as Hauts-de-Seine, Seine-Saint-Denis, Val-de-Marne, Yvelines, Essonne, Val-d’Oise or Seine-et-Marne, counsel should verify the local court and any procedural requirement before issuing proceedings. The Paris and Île-de-France section of a business plan should therefore include the rent dispute as an operational risk: court location, hearing travel, French-language documents, cash-flow exposure and the person authorised to settle.

Do not confuse a challenge to the legal effect of the clause with a request to set the new rental value. The first asks whether the automatic uplift can operate at all. The second may require valuation evidence about the premises and the local market. The court may need to consider the permitted use, the physical characteristics, the parties’ obligations and neighbouring rents. An international company that occupies a prime office, warehouse or retail site should commission a coherent valuation file and should not copy a generic index calculation from another city.

Before litigation, check the lease’s notice, mediation, jurisdiction and service provisions. A clause may require an address for notices, a formal bailiff service or a contractual meeting before proceedings. A French commissaire de justice is a regulated judicial officer who can serve a formal notice and establish proof of delivery. The company should verify the exact role needed in its case rather than sending a message to a property manager and assuming that the statutory clock has been protected. The parent company should also approve the litigation budget and designate one person to answer requests for the original documents.

Protect ongoing possession. If the landlord is still demanding the disputed amount, the tenant should obtain advice on whether to pay under express reservation, place part of the amount in an appropriate escrow arrangement, or pursue an interim measure. The correct option depends on the lease, the landlord’s notices, the company’s solvency and the risk of a default claim. A unilateral deduction from rent can create arrears, trigger a termination clause or weaken an otherwise strong legal challenge. Cash-flow control and legal strategy must be coordinated.

For a branch, the risk may reach the foreign head office directly because the branch is not a separate legal person. For an SAS or SARL, the tenant is usually the French company, although a parent guarantee or security package may bring the parent into the dispute. Confirm whether the landlord may call a guarantee, whether the lease was assigned, whether the premises were sublet and whether a corporate restructuring changed the tenant. The company’s Kbis, RCS/RNE data and lease assignment should tell the same story. If they do not, correct the corporate record and the landlord’s file before a procedural dispute exposes the inconsistency.

Foreign founders should also examine authority and language. Was the lease signed by the legal representative, a director, an agent or a group employee? Was the agent authorised to agree an unlimited rent increase? Is there a bilingual version with a priority-language clause? Does a side letter signed by the parent conflict with the French lease? These points do not decide the statutory rent question by themselves, but they affect proof and settlement leverage. Keep certified corporate approvals and the signed power of attorney with the core bundle.

A disciplined pre-action checklist is:

• identify the legal tenant, the premises and the governing lease version;
• highlight every rent, index, step, cap, duration and renewal provision;
• separate base rent, service charges, taxes, deposits and insurance recoveries;
• build a dated invoice-and-payment ledger with the landlord’s calculation;
• test the clause under the original-price, triennial-review and sliding-index categories;
• calculate a conservative and an alternative recovery scenario;
• check the limitation analysis before selecting the first recoverable invoice;
• preserve notices, admissions, translations, delivery evidence and board approvals;
• send a targeted reservation and request for correction without stopping payment casually;
• confirm the court, written procedure and valuation evidence for the property’s location.

That process also supports a commercial settlement. A landlord may accept that a perpetual 1.5% clause cannot operate while still arguing that the starting rent, a defined step or an index review remains payable. The tenant can offer a corrected future rent, a credit against future invoices or a staged repayment, provided the written agreement identifies the clause being removed, the periods settled, the tax and service-charge treatment and the reservation of any matters not resolved. A settlement signed by the correct legal representatives is safer than an informal promise by a managing agent.

Article 1231-1 of the Civil Code addresses damages for contractual non-performance. Its verified text says: Le débiteur est condamné, s’il y a lieu, au paiement de dommages et intérêts soit à raison de l’inexécution de l’obligation, soit à raison du retard dans l’exécution, s’il ne justifie pas que l’exécution a été empêchée par la force majeure. A repayment claim and a damages claim are not interchangeable. The tenant must show the legal basis, the loss, causation and the effect of any limitation or settlement. Avoid adding speculative losses such as lost expansion opportunities unless they can be proved and are legally recoverable.

For an overseas board, report the dispute in three numbers: the amount paid under the disputed mechanism, the amount that may remain payable under the valid lease and statutory review, and the maximum cash exposure if the landlord treats the invoices as unpaid. Add a confidence rating for the clause classification, the limitation analysis and the evidence. This lets the parent decide whether to settle, litigate or renegotiate the premises without confusing a legal issue with a general real-estate forecast.

The 2026 decision should also change future drafting. If the parties want a stepped rent, list each amount, date and end point in the initial schedule. If they want indexation, identify the index, the reference quarter, the calculation method, the review trigger and any mandatory limits. If they want a triennial review, do not disguise it as a guaranteed annual uplift. State how notices are served and which version controls. A foreign company can ask for an English explanation for its board, but the French lease should express the economic bargain with enough precision that a court can distinguish original price from later review.

Conclusion

A foreign shareholder does not lose the protection of French commercial-lease rent rules, and a foreign-owned company should not accept an automatic fixed increase merely because it appeared in the landlord’s standard template. The decisive distinction is between an original rent fixed in valid steps and a continuing, one-way review with no meaningful ceiling or duration. Decision no. 25-14.904 of the Third Civil Chamber, issued on 3 September 2026, confirms that a clause can be deemed unwritten when it defeats the mandatory rent-review regime.

The practical response is to identify the legal tenant, preserve the signed French documents, reconstruct every invoice, classify the clause, test limitation and send a precise notice. The company should keep paying or reserving funds only after advice on the risk of arrears and termination. For premises in Paris or Île-de-France, the location controls the procedural forum and the valuation evidence. A well-supported ledger can lead to a corrected rent and settlement; if it cannot, the tenant has a coherent record for the competent French court.

The wider company-formation context matters as well. A foreign founder who is still choosing between an SAS, SARL, branch or subsidiary should decide which entity will sign the lease, who will guarantee it, how authority will be recorded in the Kbis, and how a future restructuring will affect the premises. The company’s formation, tax, banking and lease decisions should be coordinated, but a rent clause that violates mandatory law cannot be made valid by a group structure or by a business plan.

For the legal background on setting up the French entity, see the firm’s French business formation and foreign-founder hub. The primary legal sources cited above should be read in their current versions and compared with the complete lease and the facts of the company’s premises.

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