Check Rent Increase for Tenants in Austria

Rent & increases (reference rent, categories, form) 2 min read · published September 10, 2025
As a tenant in Austria, you can have a rent increase checked to determine whether it is legally permissible. Many increases contain formal errors or rely on incorrect calculations such as rent index or category rent. This guide explains step by step which documents you should collect, which deadlines apply and how to use a template letter to contest the increase. You will receive practical tips for preserving evidence, interacting with the landlord and possible court actions. The aim is that you understand your rights as a tenant and can decide whether to accept, negotiate or take legal action. In complex cases the district court may decide; many tenants seek legal advice or use template responses for proper form. Read on for concrete steps and templates.

What to do about a rent increase?

If you receive an increase, check the formalities and calculation systematically. Note the delivery date, collect all receipts and compare the announced adjustment with the lease and statutory rules (e.g. Mietrechtsgesetz).[1]

  • Collect documents: lease, payment receipts, previous letters, meter readings.
  • Check formal requirements: verify whether the increase was justified in writing and properly served.
  • Verify calculation: pay attention to rent index, category rent and operating costs.
  • Meet deadlines: respond within legal time limits and note all dates.
  • Use a template letter: draft a written reply with supporting documents.
  • Consider legal steps: if no agreement is possible, the district court may decide.[2]
Keep all receipts and correspondence well organized.

Send the template letter by registered mail and keep proof of dispatch. Many disputes can be resolved with a clear, documented response before court action is necessary.

Legal basics

For many flats, rent law rules apply (for example, the Mietrechtsgesetz, calculation bases for rent index and category rents). Check the legal basis of the announced increase and note any cited paragraphs for later argumentation.[1]

Formal errors are a common reason to challenge increases.

FAQ

Can my landlord increase the rent at any time?
No. Rent increases must be legally justified and comply with certain form and deadline requirements depending on the tenancy and applicable law.[1]
How do I respond correctly to an increase?
Reply in writing, request supporting documents, use a template letter and send it by registered mail. Keep copies of all documents.
How much does a court procedure cost?
Court and procedure fees may apply; it is often advisable to seek legal advice or contact justice advisory services first.[2]

How-To

  1. Gather all relevant documents such as lease, payment receipts and prior correspondence.
  2. Check formal requirements: written notice, justification and proper service.
  3. Check the calculation and request the detailed breakdown if unclear.
  4. Send a template letter within the deadline by registered post and document the dispatch.
  5. If no agreement is reached, consider initiating proceedings at the competent district court or seek legal counsel.

Help and Support


  1. [1] RIS – Mietrechtsgesetz (MRG)
  2. [2] Justice – District courts and procedures
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Austria

Bob writes and reviews tenant law content for various regions. They’re passionate about housing justice and simplifying legal protections for tenants everywhere.