Price Adjustment Clauses in Practice: Model Variants and Digital Implementation

Why Price Adjustment Clauses?

Price adjustment clauses are a key instrument for managing price risks in volatile markets and for securing long-term contractual relationships. They enable the establishment of stable supply agreements that remain aligned with market developments over time. At the same time, they foster collaborative partnerships with suppliers, for example in projects involving material harmonization or value analysis.

Legal Framework: The Price Clause Act (Preisklauselgesetz – PrKG)

The Price Clause Act (PrKG) governs the admissibility of price adjustment clauses in contracts involving monetary obligations in Germany. According to Section 1 PrKG, automatic price linkage is generally prohibited if the referenced goods or services are not comparable to the contractual performance.

However, two types of clauses are permitted, particularly relevant in procurement:

  • Linkage Clauses (Spannungsklauseln) – Section 1 (2) No. 2 PrKG: Price linkage to comparable or similar goods or market indices.
  • Cost Element Clauses (Kostenelementeklauseln) – Section 1 (2) No. 3 PrKG: Price recalculation based on cost components that directly affect the creditor’s production costs.
  • Such clauses are only permissible if they are sufficiently specific (Section 2 (2) PrKG), meaning they must clearly indicate which price notations or indices are applied and how the calculation is performed. Furthermore, they must not result in an unfair disadvantage to one party (Section 2 (3) PrKG). Transparency, traceability, and a documented model description are therefore essential.

    Model Variants and Design Options

    The outcome of a price adjustment model depends significantly on the parameters chosen. Influencing factors include:

  • Market level: Supplier market notations (linkage clause) vs. upstream market notations (cost element clause)
  • Reference notations: Absolute prices or indices
  • Share calculation: Quantity-based or price-based share
  • Reference period: Point-to-point or average-to-average
  • New price determination: Flat-rate surcharges/discounts or individual calculation
  • Fixed price periods: e.g., monthly, quarterly, annually
  • Total duration: e.g., 1, 2, or 3 years
  • Corridor regulation: e.g., adjustment only if index changes by ±X%
  • Limitation: e.g., adjustment only up to ±Y%
  • Time lag: Delay between reference notation and price adjustment
  • Practical Tips: How to Maintain Control Over Your Pricing Model

  • Select reference notations: At least five years of price history, structured data, complete metadata
  • Simulate scenarios: Test parameter effects in advance
  • Include procurement market research: Realistically assess market movements
  • Automate calculations: Use and test formulas
  • Use recognized indices: Only neutral, publicly available sources
  • Document the model description: Create a comprehensible contractual basis
  • Set up automatic updates: Ensure error-free data maintenance and automated notation imports
  • Typical Risks and How to Avoid Them

    Sources of error such as vague contract wording, unsuitable indices, or manual processing mistakes can lead to significant effort and disputes. Avoid these by:

  • Carefully selecting model parameters
  • Providing a clear, documented model description
  • Using testable, automated calculation models
  • Ensuring secure data update processes
  • Always Observe the Licensing Terms of Data Sources

    When using market notations in your pricing models, always observe the licensing terms of the sources from which the notations are obtained.

    If the data is only licensed for internal use, you may not share it with your contractual partners. In such cases, your contractual partner must obtain the data themselves based on the information specified in the contract and calculate the new prices using the agreed method.

    You then compare the results without exchanging the actual notations. The results must match if the calculation method and referenced notations are clearly defined in the contract.

    Conclusion: Competitive Advantage Through Well-Designed Price Adjustment Models

    Combine the appropriate clause type with suitable reference notations, a clear model description, and automated updates. This ensures transparency, secures competitive advantages, and maintains your ability to act even in volatile markets.

    Market Notations for Your Price Adjustment Models

    Our platform HGS Research offers a wide range of market notations for use in your pricing models. Filter relevant supplier or upstream market prices and save favorites for recurring updates. A personalized live demo will show you all the benefits.

    Contact HGS for more information: info@hgs-info.net

    Responsible for this article:

    Katja Stratmann, Handelsgesellschaft Sparrenberg mbH, Brokstraße 77, 33605 Bielefeld

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