Rent Increase Rate Calculator
Quickly calculate your new rent amount by entering your current rent and the period of the increase. (This tool is for informational purposes only.)
Rent Increase Rate Law and 2026 Application
The rent increase rate refers to the legal limit on the increase that can be made to the rent amount when a lease is renewed. In Turkey, for residential and roofed commercial leases, the basic benchmark for the increase is generally the twelve-month average of the CPI. Even if the parties have written a higher rate into the contract, exceeding the legal upper limit in practice can lead to a dispute.
How Is the Rent Increase Calculated?
The calculation logic is simple: New rent = Current rent × (1 + increase rate). For example, if the rent is 10,000 TL and the increase rate is 50%, the new rent becomes 15,000 TL. The tool on this page conveniently calculates the new rent amount based on the rate you enter.
Points to Consider in Residential and Commercial Leases
- The increase period must align with the month/year the contract is renewed.
- The rate must be chosen in compliance with legislation (generally the 12-month average CPI).
- A retroactive increase is not applied automatically as a rule; evidence becomes important in disputes.
- In actions such as adaptation/rent determination, court assessment may vary.
Frequently Asked Questions
Can the rent be increased every month?
No. In practice, rent increases are generally made at annual renewal periods. Contract terms and special circumstances should be evaluated separately.
What happens if an increase above the legal limit is made?
A demand for an increase above the legal limit can lead to a dispute. In such cases, payment, warning notice, mediation, and litigation processes may come into play.
This content is for informational purposes. It is recommended that you seek professional support for an assessment specific to your situation.

