Rent increase calculator
The highest rent a landlord may ask at renewal: the current rent plus the 12-month average change in consumer prices.
Draft: this page is awaiting review by a lawyer and is not yet published.
Information only: this calculator gives general information. It is not legal advice and does not create a lawyer–client relationship. The result is an estimate based on the figures you enter and on the statutory values shown on this page with their source and effective date. The facts of a particular case, later changes in the law and court practice may produce a different result. No assurance is given that the result is accurate or that any particular outcome will be achieved. Your entries are processed only in your browser; they are not sent to us or stored.
How it is calculated
- At renewal, an agreed rent increase may not exceed the change in the 12-month average consumer price index (TÜFE) over the previous lease year (TBK art. 344/1). The same cap applies when a judge sets the rent (art. 344/2).
- The rule covers residential leases and leases of roofed business premises (art. 339), including leases longer than one year.
- The temporary 25% cap on residential renewals ended with renewals up to and including 1 July 2024.
- New rent = current rent × (1 + rate ÷ 100). The rate field is pre-filled with the latest published figure; use the figure for your own renewal month if it differs.
What it leaves out
- Leases longer than five years, and leases renewed after five years, where a judge sets the new rent on equitable grounds, taking the CPI change into account (art. 344/3).
- Rents agreed in a foreign currency (art. 344/4).
- A lower increase agreed in the contract, which binds the landlord.
Parameters and sources
| Period | Value | Source |
|---|---|---|
| map[en:September 2026 CPI tr:Eylül 2026 TÜFE] | 31.49% | TCMB consumer price statistics (TÜİK data) |
Parameters checked:
Official sources
Statutes are linked to the official legislation database. Accessed on the review date.