Rent Increase Calculator (Turkey)
Legal maximum rent increase for Turkey, by renewal month, from official CPI.
For a June 2026 renewal the legal cap is 32.24% (May 2026 CPI 12-month avg.): the new rent can be at most TRY 26,448.
Calculation breakdown
| Applied rate | %32,24 |
|---|---|
| Increase amount | ₺6.448 |
| New rent (max) | ₺26.448 |
Annual rent increases for housing and roofed workplaces in Turkey are capped by Article 344 of the Code of Obligations: the increase cannot exceed the 12-month average change in CPI for the previous rental year. The temporary 25% cap on housing rents ended on 1 July 2024; the CPI average is now the only legal limit. This tool automatically picks the correct official figure for your renewal month.
How is it calculated?
The applicable rate is the "change according to 12-month averages" published in the CPI bulletin of the month before your renewal month, released by TurkStat (TÜİK) around the 3rd of each month. For a contract renewing in June, the May figure applies.
Formula: new rent = current rent × (1 + rate / 100)
This is a maximum — parties may agree on less. Do not confuse it with annual (year-over-year) CPI; the law refers to the 12-month average series, which usually differs.
| Parameter | Value | Source |
|---|---|---|
| CPI 12-month average (2026-05) | 32.24% | TÜİK (2026-06-03) |
Example
Consider a tenant whose contract renews in June. The May 12-month-average CPI figure applies; the current rent is multiplied by that rate and the result added to the rent. Select your renewal month and enter your rent in the tool above to see the legal maximum. Any increase beyond the cap is invalid for the excess portion.
Frequently asked questions
How is the legal rent increase calculated in Turkey?
Multiply the current rent by the 12-month average CPI change of the month before renewal. That amount added to the current rent is the legal maximum new rent.
Which month's CPI figure applies?
The month before your renewal month, because the renewal month's bulletin is not yet published at renewal time. A July renewal uses the June figure.
Is the 25% rent increase cap still in force?
No. The temporary 25% cap for housing ended on 1 July 2024. The 12-month average CPI is the only current limit.
Can a landlord demand more than the CPI cap?
Not at renewal — agreements above the legal cap are invalid for the excess. After five years of tenancy, a landlord may ask a court to reset the rent to market level, which is a separate legal process.
Does the same rule apply to workplace rents?
Yes, roofed workplace leases fall under the same Article 344 cap.