Price revision and indexation clauses in France

Price revision, indexation and renegotiation clauses distinguished

In a French sales contract the price must be determined or at least determinable at the moment the sale is formed (Article 1591 of the Civil Code). That rule does not stop the parties from agreeing, in advance, how the price will move over the life of a supply relationship. A price revision clause france is the general label for any mechanism that adjusts an agreed price after signature, and it is essential in long-term or repeat-order arrangements where raw-material, energy or transport costs cannot be locked in for years.

Three techniques are often confused. An indexation clause (clause d'indexation or clause d'échelle mobile) makes the price vary automatically by reference to a published index, with no further discussion: when the index moves, the price moves. A revision or price-review clause (clause de révision de prix) instead obliges the parties to meet and renegotiate the price when a defined trigger occurs, without guaranteeing any particular outcome. A hardship clause addresses the narrower case where performance becomes excessively onerous because of an unforeseen change of circumstances.

The distinction matters because the law treats each differently. Automatic indexation is policed by the Monetary and Financial Code, which restricts the indices you may choose. Renegotiation and hardship clauses are governed by ordinary contract law and by the parties' own drafting. Choosing the wrong instrument, or an unlawful index, can leave the clause void and the price frozen at its original figure.

When is an indexation clause valid under French law?

The starting point for any indexation clause france is Article L112-1 of the Monetary and Financial Code, which prohibits indexing a price automatically to certain measures unless a statutory exception applies. The general principle is not that indexation is forbidden, but that the chosen index must have a real connection to the transaction. A clause built on an arbitrary or foreign benchmark, chosen only because it rises quickly, will not survive scrutiny.

Article L112-2 of the Monetary and Financial Code sets the key test for a lawful clause de révision de prix based on an index. The index used must be in direct relation with the object of the contract or with the activity of one of the parties, or else it must reflect the general level of prices or wages measured on a national basis. In a sale of goods, this usually means selecting an index that tracks the cost of the very inputs that drive the seller's price — a metals index for a metalwork supplier, an energy index for an energy-intensive producer, a freight or fuel index for a distributor bearing transport cost.

The public statistics office publishes a wide range of sectoral cost indices that are designed for exactly this purpose, and using an official, regularly updated index reduces the risk of a later challenge. The parties should identify the index precisely — its name, its publisher, its base period — and state what happens if it ceases to be published, so the clause does not collapse the day the benchmark is discontinued. A price revision clause france that names a vague or obsolete index invites a dispute the seller may lose.

A second dimension of validity is the direction and frequency of the adjustment. A clause that allows the price to move only upwards, never downwards, can be attacked as unbalanced, so it is prudent to let the index operate symmetrically or to cap movement in both directions. Likewise, the revision period should be defined — quarterly, annually, or on each order — because an index applied at unpredictable intervals is hard to enforce. These mechanical choices are as important to the survival of an indexation clause france as the identity of the index itself.

The ban on indexing to the general wage level or minimum wage

French law singles out certain indices as off-limits for automatic indexation, and the most important prohibition for commercial contracts concerns wages. A price may not be indexed automatically to the general level of wages or to the statutory minimum wage (the SMIC). The policy behind this rule is macro-economic: automatic wage indexation across the economy fuels an inflationary spiral, so the legislator removed it from the menu of permissible benchmarks.

This is a frequent trap in a price revision clause france, because indexing to the minimum wage or to a broad wage index looks intuitive for a labour-intensive supplier. It is nonetheless unlawful, and a clause that does so is void. The correct approach is to select a sectoral labour-cost or production-cost index that relates specifically to the activity in question, rather than the economy-wide wage benchmark, so that the connection required by Article L112-2 is satisfied without touching the prohibited measure.

The consequence of choosing a prohibited index is severe. Where the indexation clause is struck down, the automatic adjustment disappears and the seller is left with the original contract price, unless it can invoke a separate revision or hardship mechanism. The Cour de cassation has consistently held that an unlawful index cannot simply be replaced by the judge with a lawful one of the court's choosing; the parties bear the risk of their drafting. Getting the index right at the outset is therefore far cheaper than litigating it later.

Price-review clauses and contractual hardship clauses

Where automatic indexation is unavailable or undesirable, parties often prefer a price-review clause that obliges them to renegotiate the price when a defined event occurs — for example, when a named cost index moves by more than an agreed percentage, or at fixed annual intervals. Unlike an indexation clause, a review clause does not change the price by itself; it creates a duty to negotiate in good faith towards a new price. This is a clause de révision de prix in the renegotiation sense, and it sits outside the Monetary and Financial Code restrictions because it triggers a discussion rather than an automatic adjustment.

A workable review clause must anticipate deadlock. If it only says the parties shall renegotiate and one side refuses to move, the clause is toothless. Careful drafting therefore adds a consequence for failure to agree: a right to terminate on notice, referral to an expert or third party to fix the new price, or suspension of deliveries. Without such a fallback, a review clause can leave the seller performing at a loss while negotiations stall.

A dedicated hardship clause goes further, defining in advance what counts as an unforeseen upheaval — a surge in raw-material or energy prices, a currency shock, a change in duties — and what the parties must then do. Because the statutory hardship regime can be excluded or adapted by contract, a bespoke clause lets the parties set their own threshold, their own timetable and their own remedy, rather than relying on the default rules. For related mechanisms see our note on force majeure and hardship and on key clauses in a French sales contract.

Unilateral price-setting in framework contracts (Article 1164)

Long-term supply is often organised as a framework contract under which individual orders are placed over time, with the price for each order set later. Article 1164 of the Civil Code expressly permits this: in a framework contract, the parties may agree that the price will be fixed unilaterally by one of them, provided that party is able to justify the amount if challenged. This is an important alternative to indexation, because it lets a seller publish an evolving price list rather than tie the price to a formula.

The freedom is not unlimited. Article 1164 subjects unilateral price-setting to an abuse control: if the price is fixed abusively, the aggrieved party can go to court, which may award damages and, where appropriate, terminate the contract. The party setting the price must therefore be ready to explain how it was calculated — by reference to cost movements, published tariffs or a transparent methodology — rather than imposing an arbitrary figure. A price revision clause france built on Article 1164 works best when the pricing method is documented from the start.

This mechanism dovetails with indexation and review clauses rather than replacing them. A framework agreement may combine a unilateral list price with an indexation formula that caps or floors annual movements, giving the seller flexibility while giving the buyer predictability. The essential discipline is the same throughout: transparency and a demonstrable link to real costs, which is what protects the clause against a later challenge for abuse.

For a foreign supplier used to open price-adjustment discretion, Article 1164 is more generous than it may first appear, but it comes with an evidential burden. Keeping a documented pricing methodology — the cost components, the source data, the timing of each revision — is what converts a bare contractual right into a defensible position. Where the buyer disputes a figure, the seller who can show a consistent, cost-based method is far better placed than one relying on commercial judgement alone.

Hardship under Article 1195 as a statutory fallback

Even where a contract contains no price clause at all, French law now offers a statutory safety net. Article 1195 of the Civil Code, introduced in the 2016 contract-law reform, allows a party to ask the other to renegotiate where an unforeseeable change of circumstances makes performance excessively onerous, provided that party had not agreed to bear that risk. This imprévision regime is the general-law counterpart to a bespoke hardship clause and can rescue a seller trapped by a cost surge that the fixed price cannot absorb.

The procedure has clear stages. First, the disadvantaged party requests renegotiation and must continue to perform in the meantime. If renegotiation fails, the parties may agree to terminate the contract or jointly ask the court to adapt it. Failing agreement, either party may ask the judge to revise the contract or bring it to an end, on a date and on terms the court sets. Article 1195 thus gives the courts a power to rewrite the price that has no equivalent in the older law.

Because Article 1195 is not mandatory, sophisticated parties usually address it head-on in the contract. They may exclude it entirely, so that each side keeps the risk of cost movements, or expand and channel it through a tailored hardship clause with defined triggers and remedies. A price revision clause france should therefore state expressly whether Article 1195 applies, is excluded, or is replaced by the parties' own mechanism, to avoid an argument about the default rule when costs spike.

Drafting a valid and workable price revision clause

A durable clause combines the right legal foundation with practical machinery. The drafter must first decide which instrument fits the deal — automatic indexation, periodic review, unilateral list pricing under Article 1164, or a hardship mechanism — and then make each element precise enough to apply without further argument. The steps below set out the sequence we use when we build a price revision clause france for a supply contract.

The single most common drafting failure is an index with no real link to the contract, followed closely by clauses that mandate renegotiation but say nothing about what happens if it fails. Both defects can neutralise the whole mechanism. A clause that survives challenge is specific about the index, the formula, the timing and the consequences, and it never reaches for the prohibited wage benchmarks.

Consequences of an invalid clause and a practical checklist

When a price revision clause france is invalid — most often because the index is unlawful — the automatic adjustment is void and the price reverts to its original level. That outcome can be commercially painful for a seller whose costs have moved sharply, and it cannot usually be cured by asking a judge to substitute a lawful index. The buyer, conversely, may find itself locked into a price that no longer reflects the market. Neither party benefits from a clause drafted without regard to the Monetary and Financial Code.

Invalidity is normally partial: a void indexation clause does not, by itself, bring down the whole contract, which continues on the un-indexed price. That is precisely why a well-built agreement layers its protections, so that if the indexation formula fails, a review clause or the Article 1195 hardship route remains available. The aim is to ensure that a single drafting error does not leave one side exposed for the entire term.

The practical lesson is that a price revision clause france should be tested against three questions before signature: is the index lawful and connected to the contract, does the formula produce a calculable figure, and what happens if the mechanism fails. A clause that answers all three leaves little room for a later dispute. The checklist below distils the points we verify on every supply contract we review, whether we act for the seller or the buyer.

• Confirm the index relates to the object of the contract or a party's activity (Article L112-2).
• Verify the index is not the prohibited general wage level or minimum wage.
• Fix the base price, base index and revision periodicity in figures.
• Include a replacement index if the benchmark is discontinued.
• State the consequence of a failed renegotiation in a review clause.
• Decide expressly whether Article 1195 applies, is excluded, or is replaced.
• On cross-border sales, align the price clause with the applicable law and any CISG choice.

Frequently asked questions about price revision and indexation clauses in France

Can I include a price revision clause in a French sales contract?

Yes. French law allows a price revision clause france through automatic indexation, a renegotiation clause, unilateral pricing in a framework contract under Article 1164, or a hardship mechanism. The controls differ by type: automatic indexation is policed by the Monetary and Financial Code, while renegotiation clauses depend mainly on your drafting.

What index can I use in an indexation clause?

Under Article L112-2 of the Monetary and Financial Code, the index must be in direct relation with the object of the contract or with the activity of one of the parties, or must reflect the general level of prices. In practice this means choosing a published sectoral cost index that tracks your real inputs, such as a metals, energy or freight index.

Can I index the price to the minimum wage?

No. Indexing a price automatically to the minimum wage (SMIC) or to the general level of wages is prohibited, and a clause that does so is void. Use a sectoral cost index tied to your activity instead, so the connection required by Article L112-2 is met without touching the banned benchmark.

What happens if my indexation clause is invalid?

The automatic adjustment falls away and the price reverts to its original figure. A judge will not usually substitute a lawful index of the court's choosing, so the seller bears the drafting risk. A layered contract that also contains a review or hardship route reduces this exposure.

What can I do if my costs rise unexpectedly and there is no price clause?

Article 1195 of the Civil Code allows a party to request renegotiation where an unforeseeable change of circumstances makes performance excessively onerous, provided it did not agree to bear that risk. If renegotiation fails, the parties or ultimately the court can adapt or terminate the contract. This statutory hardship remedy can be excluded or shaped by the contract.

Can one party set the price unilaterally?

In a framework contract, Article 1164 of the Civil Code lets the parties agree that one of them will fix the price for later orders, subject to justifying the amount. If the price is set abusively, the other party can claim damages and, where appropriate, termination. A transparent pricing method is the best protection against a challenge.

Do these rules apply to international sales into France?

The applicable law decides which price-adjustment and hardship rules govern your contract. If French law applies, the Monetary and Financial Code index rules and Article 1195 are relevant; if the CISG applies, hardship and adjustment are handled differently. Align your price revision clause with your choice-of-law clause to avoid inconsistency.

How our French lawyers help with price revision and indexation clauses

Petroff Avocats advises both suppliers and buyers on price mechanisms in French and cross-border sales contracts. For sellers, we design indexation and review clauses that track real cost drivers, choose lawful indices under the Monetary and Financial Code, and structure unilateral pricing under Article 1164 so it withstands an abuse challenge. For buyers, we scrutinise proposed clauses for hidden or unlawful indices, negotiate caps and floors, and clarify whether Article 1195 hardship is in play. Whichever side you are on, we align the price clause with your choice-of-law and dispute-resolution clauses so the whole contract holds together.

This article is for general information only. It does not constitute legal advice and cannot replace advice tailored to your contract and circumstances. French price-clause and indexation rules turn on precise drafting and the facts of each deal. Contact our French lawyers for advice on your situation.