December 2025 Rent Increase Rate Has Been Determined! How Much is the Increase? The eagerly awaited announcement has arrived for millions of people who own rental homes or workplaces.
The December 2025 rent increase rate has been determined! With TÜİK’s (Turkish Statistical Institute) announcement of October’s inflation figures, the legal increase rate that can be applied to rents this month has also become clear.
How Much is the December 2025 Rent Increase Rate?
According to data from the Turkish Statistical Institute (TÜİK):
November 2025 annual inflation rate: % 31.07
12-month average CPI (rate used as basis for rent increases): % 35.91
The December 2025 rent increase rate was announced with TÜİK data. The legal increase rate to be applied to homes and workplaces became % 35.91. Accordingly, in rent contracts to be renewed in December 2025, landlords will be able to apply an increase of at most % 35.91. This rate is valid for both residential rents and workplace rents.
Important Note: Landlords can apply an increase below this rate, but an increase above it is not legally valid.
How is the Rent Increase Determined?
The rent increase rate is calculated based on the 12-month average of CPI (Consumer Price Index) announced monthly by TURKSTAT, in accordance with the Turkish Code of Obligations and current regulations.
The 25% upper limit applied during the 2022–2024 period has now ended; therefore, rent increases in 2025 are once again tied to the CPI average.
Landlords can only increase rent on the condition that they do not exceed the 12-month average of CPI.
Even if the contract contains provisions such as “CPI + X%”, the total rate cannot exceed this limit.
Most Frequently Asked Questions About November 2025 Rent Increase
What is the December 2025 rent increase rate?
35.91% (CPI 12-month average)
Is this rate only for residences, or does it also apply to workplaces?
Yes, it applies to both.
What happens if the landlord demands a 40% increase?
The legal limit is 35.91%; anything beyond that is not valid, and the tenant can object.
My rental agreement states ‘CPI + 5%’, what will happen?
The total increase cannot exceed 35.91%; this rate is the upper limit.
Does the rent increase change every month?
Yes, the 12-month average is updated every month according to the inflation data announced by TURKSTAT.
Is this rate valid in a rent determination lawsuit?
The court takes into account the CPI 12-month average; this rate is the upper limit.
Is there a problem if the landlord does not increase the rent?
No, increasing the rent is not mandatory; parties can agree and determine a fixed rent.
What happens if the tenant does not accept the rent increase?
The landlord can send a written warning; however, an increase exceeding the legal limit can be litigated.
Result: December 2025 Rent Increase Upper Limit % 35,91
With the latest data announced by TURKSTAT, the highest increase rate that can be applied to home and workplace rents in December 2025 has been % 35,91 . Landlords cannot exceed this limit, and tenants can demand an increase based on this rate. Before renewing your lease agreement in the new period, you must check your contract clauses and TURKSTAT data. Rent increase rate calculation.
