Price adjustment clauses are permissible, but only if they meet the transparency and specificity requirements of the German Civil Code (BGB) and the Price Clause Act (PreisKlG). The clause must make the trigger and the method of adjustment transparent and must not only allow increases, it must also provide for reductions. Where no clause exists at all, the only emergency exit is section 313 BGB; in continuing obligations, termination is often the more realistic option.
In short:
For index clauses you must set out the specific reference value, the base year and how to deal with later index revisions, so that calculations remain traceable.
A price escalation clause should calculate the percentage change rather than fixed amounts, state clear notification periods, and grant the counterparty a special right of termination for unilateral changes.
Without an agreed clause, an adjustment under section 313 BGB is only possible under high hurdles; for continuing obligations, termination is more likely to be an option.
For international contracts you should settle choice of law and jurisdiction early, choose the right index source and binding language version, and address currency risk separately from cost changes.
Which laws and principles apply to a price adjustment clause?
Anyone looking to regulate price adjustments by contract moves within a narrow corridor of standard-terms law, equitable review and price-clause law. The main pillars:
- Content review and transparency: price adjustment clauses in standard terms are subject to strict review under section 307 BGB. Unclear or one-sided wording quickly fails.
- Clause prohibitions: whether short-term price increases after conclusion of the contract are permissible depends on the statutory rules and the contract type. Check the relevant rules under section 309 no. 1 BGB.
- Equity under section 315 BGB: where one party determines the price unilaterally, the court may review whether that corresponds to equitable discretion. In B2B continuing obligations this is, in the view of practitioners, the customer's sharpest tool, as a piece on the bbh blog describes.
- Price Clause Act: the PrKG prohibits tying a monetary debt to non-comparable goods. It has exceptions (sections 2 to 7) and special requirements for long-term contracts.
- Official indices: the consumer price index and producer price indices are common reference values. The Federal Statistical Office provides notes on price indices in contracts.
That sounds like a lot of theory. In practice it means: anyone drafting a clause must be able to answer three questions at once. Is it understandable? Is it balanced? Does the chosen reference value fit the subject matter of the performance?
What types of price adjustment clause are there?
Not every clause fits every contract. The common variants differ above all in how much leeway they leave to the party making the adjustment.
- Index clauses: the price follows an index automatically, for example the consumer price index or a producer price index. That creates predictability but requires a clear base year and a rule for rebasing.
- Performance reservation and spread clauses: here there is room for discretion, which must be hedged in by offsetting and a duty to give reasons. How automatic escalation clauses and performance reservations differ is set out in a piece in ChannelPartner. The chamber of industry and commerce (IHK) points out that certain types of clause are regulated as exceptions to the ban on price clauses.
- Turnover and earnings clauses: these only work if the linked values are in fact comparable.
- Price escalation clauses in construction: material and wage escalation clauses are a special case with their own practice.
When is a price adjustment clause invalid?
Clauses rarely fail because of the idea, almost always because of the wording. The Federal Court of Justice (BGH) requires transparency in the sense that the trigger and method of a price change must be foreseeable to the counterparty on the basis of clear criteria; a full breakdown of costs is not required, according to the BGH. Back in 2015 the BGH confirmed in a press release on an electricity supply contract that a clause can suffice if the trigger and the cost categories are named in an understandable way. A full weighting of all costs is not necessary.
What follows from this for you:
- Room for discretion with limits: decisions from 2022 and 2023 allow the user of the clause objective, traceable parameters. In the district heating case, the issue was different reference years for the base price and for the market and cost element. Cost and market elements must be appropriately taken into account.
- Unilateral changes in a running contract: these are possible where the amended clause meets the statutory requirements and has been notified, as the headnotes of the BGH on energy suppliers show.
- Ban on linkage: anyone tying the price to non-comparable goods risks a breach of the PreisKlG.
- Practical consequence: documentation, information and reasonable deadlines are part of clean implementation.
The examples come from the energy supply sector. As guidelines on equity and transparency they are also instructive for other industries.
How do you draft a price escalation clause? A checklist
A clause is more likely to pass judicial review if it works through these steps:
- Name the reference value: which index, which cost category, which point in time? The more precise, the better.
- Set out the calculation formula: the percentage change is usually the cleaner solution than absolute amounts.
- Provide for offsetting: price reductions must work in the same way as increases.
- Set notification periods: who informs whom, when and how, belongs in the text.
- Grant a special right of termination: it balances the unilateral power to change.
- Regulate base year and index revisions: the Federal Statistical Office notes that rebasing does not apply retroactively to adjustments already made. Contracts should therefore record the procedure for revisions.
Internally, this includes documenting the cost calculation. Vis-à-vis the counterparty, what counts is transparent, traceable notifications. Keep retroactivity and equal treatment in view.
Pro tip: draft the clause so that it expressly works in both directions. A rule that only allows for increases is the most frequent point of attack.
How such clauses fit into general standard-terms review is explained in our piece on inclusion and content review of standard terms.
What to do if no price adjustment clause has been agreed
Without a clause you are reliant on statute, and that is thin. Under section 313 BGB (loss of the basis of the contract) an adjustment is possible, but the hurdle is high. For continuing obligations, a right of termination is more likely to come to the fore.
A pragmatic approach:
- React promptly: anyone who stays silent for too long weakens their position.
- Document everything: secure cost developments, correspondence and negotiation offers.
- Offer renegotiation: a concrete proposal with a traceable calculation is usually more promising than a unilateral declaration.
- Consider termination: clarify time limits and formalities early.
- Bring in legal advice: a quick review often saves more than it costs.
Which sample wordings help as a starting point?
The following building blocks are sketches, not finished texts. Each sample needs to be adapted to your contract and reviewed by a lawyer.
- Index-based escalation clause: "If the consumer price index changes by more than [threshold] per cent compared with the base month, the price is adjusted by the same percentage. Increases and reductions are taken into account equally. The adjustment is notified to the counterparty in writing with [period] of advance notice."
- Performance reservation with duty to give reasons: "If the cost factors referred to in paragraph [X] change on evidence, the adjusting party is entitled to adjust the price in equitable discretion. It notifies the trigger, the calculation path and the time of the change in advance. The counterparty may terminate within [period]."
Even a good template does not replace a legal review. Particularly where terms run for several years, a second look is worthwhile.
What to watch out for with price adjustment clauses in international contracts
As soon as a contract crosses borders, the first question is which law applies at all. A German clause that would be clean under German law may be assessed differently under another legal system, and vice versa. Choice of law and jurisdiction therefore belong among the first points to be clarified, before even the formula for the adjustment is drafted.
A second issue is different standards of review. Some legal systems allow price adjustment mechanisms between companies generously; others have comparable transparency and equity requirements, or mandatory rules that cannot be contracted out of. Courts also often review, under the law of the state in which they sit, whether a clause is compatible with public policy. A blanket assumption that the chosen legal system alone decides is therefore risky.
Practical questions follow: which index source applies when the parties sit in different countries? A German consumer price index is hardly a fit for a supplier whose costs arise in a different economy. And in which language are notifications effective? Especially in multilingual contracts, it should be clear which version prevails in case of divergence. Our team works multilingually, so that such divergences do not arise through translation in the first place. For the Ukraine angle we have put together notes for Swiss SMEs.
How do you negotiate price adjustment clauses in international commercial law?
Negotiating here means above all: disclose interests early and move dispute potential into the text, before it ends up in a dispute. A tried and tested starting point is the question of what each side actually wants to protect itself against. The supplier is usually concerned about raw material, energy and labour costs; the customer about predictability and ceilings. Both can be reflected in a clause if they are openly addressed.
In practice, three levers help. First: thresholds instead of permanent automatic adjustment. An adjustment only takes effect above a clearly defined deviation; that reassures both sides and avoids trivial corrections. Second: cap and floor. A ceiling on annual increases creates planning certainty, a floor protects the supplier. Third: a procedure for the event of conflict, for example a duty to renegotiate within a time limit, followed by mediation or arbitration. Especially across borders, an arbitral award is often easier to enforce than a state court judgment.
How additional adjustment mechanics with thresholds are structured in negotiations is shown in a piece on basket and de-minimis clauses, which comes from company acquisitions and can be transferred to price adjustments. Record the state of negotiations and reasoning in writing. That helps later with interpretation. For complex situations, we support you.
How do exchange rate fluctuations affect price adjustment clauses?
As soon as billing is in different currencies, two risks mix: cost risk and currency risk. An index clause that only reflects domestic price developments does not catch currency movements. Conversely, a currency clause can leave cost increases unaddressed. You should therefore address both levels separately and clearly keep them apart in the text.
Typical drafting options are a fixed contract currency with a clear conversion rate, a reference rate from a named source at a defined cut-off date, or a split of the risk above a threshold. What matters is to state the source of the rate, the time, and how weekends and holidays are handled. If this is missing, dispute arises over calculation paths rather than over substance.
The familiar principles apply here too: the clause must be transparent and must not benefit only one side. For contracts with a German choice of law, the PreisKlG may also become relevant if monetary debts are tied to values that have no connection to the performance. Check therefore whether the chosen linkage still falls within the exceptions. Questions on the detail of currency risk are addressed by our team in an initial consultation.
What is changing in Swiss price law for price adjustment clauses?
For contracts with a Swiss element it is worth looking across the border, because Switzerland takes its own path on many points. The Swiss Code of Obligations has neither a standard-terms review regime between companies that fully corresponds to section 307 BGB nor a general ban on certain price clauses comparable to the PreisKlG. Instead, principles such as freedom of contract, good faith, the rule against unusual terms and unfair competition law play a greater role. How this works in detail is explained in our piece on standard terms in Switzerland.
For current developments: price law is in motion, and you should check the current version of the relevant rules and case law instead of relying on older rules of thumb. We therefore only make concrete statements about new developments after reviewing the sources in each individual case. In an initial consultation we clarify which current rules apply to your contract.
In practical terms this means for clauses with a Swiss element: choose the legal system deliberately, set out the trigger and calculation as transparently as under German law, and make sure the clause still holds up when a court in another country reviews it against its own standard. In contractual relationships between Germany and Switzerland in particular, this dual perspective can be decisive.
What role do price adjustment clauses play in supply and service contracts?
Depending on the contract type, the focus lies elsewhere. In supply contracts, raw material, energy and freight costs take centre stage. Here index clauses with a reference to a producer price index or to a specific material price fit, supplemented by thresholds and deadlines. What matters is that the index actually fits the goods delivered. A general consumer price index often only captures raw material costs roughly.
In service contracts, personnel costs dominate. Wage escalation clauses or linkage to a collective bargaining index are usual. For IT and maintenance contracts, practitioners recommend a clear distinction between an automatic escalation clause and a performance reservation with offsetting, as the ChannelPartner piece explains. To classify the contract type itself, it is worth looking at the question whether a works contract or a service mandate is present, because termination rights and remuneration logic depend on that.
In construction, material and wage escalation clauses are a discipline of their own with set conventions. For energy and heating supplies, BGH case law sets the standard, as the decisions already mentioned show. Everywhere it holds: the longer the term, the more important offsetting, notification periods and an exit right become. We therefore always review your clauses in interaction with contract type, term and industry practice.
Why should companies review their contract clauses now?
Volatile markets quickly turn a dormant clause into a point of dispute. Anyone pulling an older contract out of the drawer today often finds: the clause is imprecise, the base year outdated, the notification period unclear. Our recommendation: review your contracts regularly, not only in the event of a dispute, and set up a documented process for price notifications. That costs little and protects against expensive disputes.
— Bitblade
How we support you with clause review and contract drafting
A clause that holds up in court is not drafted on the side. We review existing price adjustment clauses, adapt them and draft new contracts, on request multilingually in German, English, French, Ukrainian and Russian. In this way legal precision is preserved even in international contracts. Our initial consultation and assessment are billed from CHF 150 per hour; the current fees are set out on our page on packages and fees. Tell us about your contract and book an initial consultation so that we can go through your clause together.
FAQ
Can an existing contract become more expensive?
Yes, but only on a contractual or statutory basis. Without a price adjustment clause, at most section 313 BGB remains, with its high hurdle, or termination in continuing obligations. Unilateral increases without a basis are open to challenge.
How do you draft a price escalation clause?
A sustainable clause names a clear reference value, a traceable calculation formula and notification periods. It provides for offsetting on increase and decrease and a special right of termination. The base year and the handling of index revisions also belong in it.
When are price adjustment clauses invalid?
They are mostly invalid where the trigger and method of adjustment are not traceable or the clause only allows for increases. Breaches of clause prohibitions such as the four-month lock-up under section 309 no. 1 BGB or of the Price Clause Act also lead to invalidity.
When does the Price Clause Act apply?
The PreisKlG applies where a monetary debt is to be determined by the price or value of other, non-comparable goods. It contains exceptions and special rules for long-term contracts in section 3 PrKG.