Bavaria Commercial Rent Increases: Index, Graduated, Turnover

Commercial rents in Germany, including Bavaria, are primarily governed by the German Civil Code (BGB), which entered into force on 1 January 1900. Unlike residential properties, commercial leases are not subject to statutory caps like the Mietpreisbremse or Kappungsgrenze. Commercial rent increases are governed primarily by the principle of freedom of contract under the BGB — the parties agree on rent adjustment mechanisms at the time of signing. Since most commercial leases are fixed-term (5-10 years), rent increases must be pre-agreed in the lease; there is no statutory mechanism for mid-lease unilateral adjustment. Disputes are handled by the competent civil courts—the Amtsgericht (Local Court) or Landgericht (District Court)—depending on the amount in dispute.

1. Index-Linked Rent (Indexmiete)

The most common rent adjustment mechanism in Bavarian commercial leases ties the rent to the Consumer Price Index for Germany (VPI) published by the Federal Statistical Office.

Requirements for Valid Index Clauses (Preisklauselgesetz)

While commercial rent increases are primarily governed by the principle of freedom of contract under the German Civil Code (BGB), the Preisklauselgesetz (PrKG) serves as a restrictive framework. The PrKG generally prohibits automatic price-indexation clauses to prevent inflation spirals (§ 1 PrKG).

Requirements for Valid Index Clauses (§ 3 PrKG): For a true automatic sliding clause (echte Wertsicherungsklausel) to be valid under § 3 Abs. 1 Nr. 1 lit. e PrKG, the following conditions must be met:

• The landlord must waive the right to ordinary termination for at least 10 years, OR
• The tenant must have the right to extend the contract duration to at least 10 years (e.g., a 5-year term with a 5-year option).
• The clause must reference the development of prices or values for goods or services determined and published by an official body, such as the official German CPI (VPI) published by the Federal Statistical Office.

Legal Consequences of Invalidity (§ 8 PrKG): An automatic index clause that does not meet the PrKG conditions is ineffective. However, under § 8 PrKG, the invalidity of such a clause only takes effect from the time the illegality is established by a final court decision (ex nunc), unless the parties have specifically agreed on retroactive invalidity.

Best Practice

• Use percentage changes rather than absolute index point values, as the CPI's base year changes periodically (e.g., 2015=100 to 2020=100)
• Clearly specify whether adjustments are automatic or require written notice from the landlord

2. Graduated Rent (Staffelmiete)

In commercial leases, graduated rent is governed by freedom of contract. Unlike residential leases (§ 557a BGB), there are no statutory restrictions on the frequency or amount of increases. The residential requirement that rent must remain unchanged for at least one year between steps does not apply to commercial properties.

• Example: "Rent is €2,000/month from 2025, €2,100 from 2026, €2,200 from 2027"
• Provides certainty for both parties
• Disadvantage for landlords: If inflation significantly exceeds the agreed steps, the landlord cannot adjust further

3. Turnover-Based Rent (Umsatzmiete)

Common for retail and gastronomy in Bavarian cities (especially Munich's shopping centers):

• Typically combines a base rent (minimum guarantee) plus a percentage of net turnover above a threshold
• Example: €1,000 base rent + 6% of monthly net turnover exceeding €16,000
• Requires detailed contractual provisions for:
• How and when turnover is reported (monthly/quarterly/annually)
• Independent audit rights for the landlord
• Definition of "net turnover" and excluded items

4. Modernization-Based Increases

Commercial landlords have no statutory right to increase rent after modernization. Any modernization-related increase must be explicitly pre-agreed in the lease or negotiated as an amendment.

Contrast with Residential Law: In residential tenancies, § 559 BGB allows landlords to increase the annual rent by 8% of the costs incurred for specific modernization measures. However, this is not automatic; it requires a formal written declaration to the tenant pursuant to § 559b BGB, and the increase only takes effect after a notice period (usually three months).

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