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The legal rent increase cap, month by month

Turkish lease renewals are capped by the CPI twelve-month average of the month before renewal, a number that changes every month. Pick your renewal month, and get the exact cap and the highest rent your landlord can lawfully ask.

Inputs

TRY / month

The cap comes from the CPI twelve-month average of the month before renewal.

Verified 6 Oct 2026TUIK CPI bulletins · Code of Obligations art. 344

Result

31.49%legal maximum increase for October 2026 renewals
₺39,447
highest lawful new rent
₺9,447
maximum increase amount
September 2026
CPI data month applied
Aug 25: 41.13%41.13%Aug 25Sep 25: 39.62%Sep 25Oct 25: 38.36%Oct 25Nov 25: 37.15%Nov 25Dec 25: 35.91%Dec 25Jan 26: 34.88%Jan 26Feb 26: 33.98%Feb 26Mar 26: 33.39%Mar 26Apr 26: 32.82%Apr 26May 26: 32.43%May 26Jun 26: 32.24%Jun 26Jul 26: 32.03%Jul 26Aug 26: 31.90%Aug 26Sep 26: 31.79%Sep 26Oct 26: 31.49%31.49%Oct 26

The cap has fallen every month for over a year as inflation cools. 3 Nov 2026, 10:00: the TUIK October 2026 bulletin sets the cap for November 2026 renewals.

The same rule for homes and workplaces. The temporary 25% residential cap expired on 1 July 2024. The parties may always agree on a smaller increase; the cap binds increases during the first five years of the lease.

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Methodology and sources

Code of Obligations art. 344 caps renewal increases at the change in the consumer price index by twelve-month averages for the last month of the expiring lease year. TUIK announces that value around the 3rd of each month, so a renewal signed in any given month is governed by the index published for the month before it. The temporary 25% residential cap expired on 1 July 2024, leaving homes and roofed workplaces under the same rule. Parties may agree on less; within the first five years of the lease the cap binds, after which a court rent determination is possible.

  • CPI twelve-month averages, monthly series · TUIK Consumer Price Index bulletins
  • The cap rule for renewals · Code of Obligations (Law 6098), art. 344
  • Expiry of the temporary 25% residential cap on 1 July 2024 · Law 7409 temporary art. 1, not extended