Rent Increases and Tenant Rights in Finland

Rent & increases (index, fair rent) 2 min read · published September 11, 2025

How rent increases work in Finland

Rent increases can be based on agreement, indexation or a separate arrangement for rent adjustment; statutory principles are set out in the Act on Residential Leases [1]. The landlord must notify the tenant of an increase in writing and provide reasons, such as an index calculation or a justification based on market rent. The tenant may request clarification and, if necessary, dispute the increase if it appears unreasonable.

Always check the lease's rent adjustment clause before accepting any increase.

Notice periods and grounds

The law contains provisions on notification and reasonableness; check the lease for notice periods and act promptly if the increase is unclear. If the matter concerns consumer protection or contract unfairness, you can get advice from the KKV or seek resolution in dispute procedures [2] [3].

  • Check the rent amount and any indexation clause in your lease.
  • Note notification dates and deadlines before taking action.
  • Gather evidence such as rent calculations, messages and photos of changes.
Keep all communications in writing, as they are important evidence in a dispute.

Reasonable rent and negotiation

Reasonableness is often assessed by comparing local market rents and the lease terms. The tenant can propose alternatives, such as phased increases or adjustments tied to market conditions. Negotiate in writing and keep all correspondence.

Defects, repairs and habitability

If the dwelling has defects or habitability issues, the tenant may demand repairs and, if necessary, seek a rent reduction provided actions follow the law and are documented. Contact the landlord in writing first and describe the defect clearly.

Avoid unilateral measures without legal advice, as they may have legal consequences.

When there is a dispute

If negotiation fails, you may seek mediation, bring the case to the Consumer Disputes Board or take it to district court. Try to resolve the matter by negotiation and document each step before legal action. If fees or collection lead to dispute, court resolution or enforcement may be required.

Frequently Asked Questions

Can a landlord increase rent at any time?
No, not without grounds; increases must be agreed in the contract or be lawful and properly notified [1].
What should I do if rent is clearly above market levels?
Compare local rents, gather evidence and negotiate with the landlord; seek valuations if needed and escalate the dispute.
Which authorities can I contact for help?
You can contact the KKV for advice, use mediation services or bring the case to district court [2] [3].

How-To

  1. First contact the landlord in writing and explain your concerns clearly.
  2. Collect evidence: the lease, the increase notice, messages and photos of the property's condition.
  3. Send a written response or reminder if necessary and request clarification of the reasons for the increase.
  4. If negotiation fails, seek mediation or refer the matter to the Consumer Disputes Board or the district court.

Help and Support


  1. [1] Finlex: Act on Residential Leases (481/1995)
  2. [2] KKV: National consumer advice services
  3. [3] Oikeus.fi: Legal services and guidance
Bob Jones
Bob Jones

Editor & Researcher, Tenant Rights Finland

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