For residential and roofed commercial leases renewing in October 2026, the maximum increase is 31.49%, the 12-month average CPI. A higher contractual rate cannot exceed this cap.
This page is updated monthly after TÜİK's inflation release.
1. October 2026. The 12-month average CPI announced on 5 October 2026 is 31.49%; the previous month's figure was 31.79%.
2. Example. A monthly rent of TRY 20,000 may rise to at most TRY 26,298.
• Under Code of Obligations art. 344, the increase cannot exceed the 12-month average CPI of the previous lease year; a lower agreed rate applies.
• The temporary 25% cap on residential rents ended on 1 July 2024.
• After five years, the court may set a new rent on equitable grounds.
• Mediation is mandatory before rent determination cases.
This article is for general information as of 20 October 2026 and does not constitute legal advice.
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