Rent Increase Rate Calculator 2026

What Is Rent Increase in Turkey?

A rent increase in Turkey is the adjustment of the rent for residential and roofed commercial premises at the start of each renewed lease year, capped at the twelve-month average change in the Consumer Price Index (CPI) for the previous lease year. Rent increases in Turkey are regulated by Article 344 of the Turkish Code of Obligations No. 6098 (TCO), and the reference rate is the Consumer Price Index (CPI) announced every month by the Turkish Statistical Institute (TÜİK). The calculation of the rent increase rate in Turkey therefore changes every month in line with economic conditions and inflation.

Determining rent increase rates in Turkey within a legal framework is essential to balance the rights and obligations of tenants and property owners. To prevent potential disputes regarding rent increases, consulting a rental law attorney in Turkey is advisable. The table below summarises the key rules on rent increases in Turkey:

What Are the Monthly Rent Increase Rates for 2026 in Turkey?

The maximum rent increase rates in Turkey for 2026 are the twelve-month average CPI change rates announced by TÜİK each month. According to the data announced by the Turkish Statistical Institute (TÜİK), the rent increase rates applicable to residential and commercial leases in Turkey for 2026 are as follows:

How Much Is the Rent Increase Rate for October 2026 in Turkey?

The maximum rent increase that may be applied to residential and roofed commercial leases renewed in October 2026 in Turkey is 31.49%. This rate is based on the twelve-month average Consumer Price Index (CPI) data for September 2026, announced by the Turkish Statistical Institute (TURKSTAT) on 5 October 2026.

🔔 The rent increase rate for the October 2026 period in Turkey has been announced as 31.49%.

Pursuant to the Turkish Code of Obligations, rent increases in residential and roofed workplace lease agreements in Turkey may not exceed the twelve-month average CPI rate announced for the previous rental year. In this context, the rate of 31.49% represents the maximum legally permissible rent increase in Turkey that may be applied to lease agreements as of October 2026. Even if a higher increase has been agreed between the parties, this rate is applied as the legal upper limit.

When Will the November 2026 Rent Increase Rate in Turkey Be Announced?

The rent increase rate for leases renewed in November 2026 in Turkey will be known when TÜİK publishes its October 2026 Consumer Price Index bulletin, which is expected on Tuesday, 3 November 2026 at 10:00. For example, the September 2026 bulletin on which the October 2026 rate is based was published on 5 October 2026 at 10:00. Until the November rate is announced, the rate field in the calculator above stays empty; the calculator is updated once the rate is published.

What Will the 2027 Rent Increase Rate Be in Turkey?

The rent increase rates for 2027 in Turkey are not yet known; each month’s rate becomes final only when TÜİK announces the twelve-month average CPI change for the preceding month. For example, the rate for leases renewed in January 2027 will be announced in the first days of January 2027 together with the December 2026 inflation data. Any 2027 figures published today are therefore estimates, not official rates.

Which Month’s Rate Applies to a Rent Increase in Turkey?

A rent increase in Turkey is based on the twelve-month average CPI change for the month preceding the lease renewal month, as announced by TÜİK. Because TÜİK publishes each month’s data at the beginning of the following month, a lease renewed in October 2026 uses the September 2026 figure (31.49%) announced on 5 October 2026. The “Contract Renewal Month” field of the calculator follows this rule, so you only need to select the month in which your lease renews.

How Is the Rent Increase Rate Calculated in Turkey?

The rent increase in Turkey is calculated by multiplying the current rent by the twelve-month average CPI rate for the renewal month and adding the resulting amount to the current rent. The CPI, published by the Turkish Statistical Institute (TÜİK), measures the price increase over a year and serves as the basis for rent adjustments in Turkey. The increase is applied on the contract renewal date, following the CPI rate and legal limitations.

A tenant who fails to pay the increased rent set within the legal cap may fall into default, and this can lead as far as the tenant’s eviction: in residential and roofed commercial leases the landlord may give the tenant at least thirty days in writing to pay and, if payment is not made, terminate the lease (TCO Art. 315). The landlord may also claim the unpaid difference through debt enforcement proceedings, so calculating the rent increase rate correctly is important for both parties.

• Example Rent Increase Calculation for October 2026

For a lease renewed in October 2026 with a current rent of 20,000 TL, the maximum increase is 31.49%. The calculation is made in the following steps:

• How Much Can Rent Be Increased in Turkey? (October 2026 Examples)

For a lease renewed in October 2026 in Turkey, rent can be increased by at most 31.49%; multiplying the current rent by this rate gives the maximum increase. For leases that have passed five years, the rent set by the court by reference to comparable rents is not bound by this cap (TCO Art. 344/3). The table below shows the highest possible increase and the new rent for commonly searched rent amounts. For another amount or month, you can use the rent increase calculator above.

What Is the Rent Increase in Turkey Based On?

Rent increases in Turkey are based on the twelve-month average change in the Consumer Price Index (CPI) announced by the Turkish Statistical Institute (TÜİK). The CPI is the primary reference for determining the highest rent increase rate in Turkey, and in both residential and commercial leases in Turkey the parties cannot freely set a rate above it. This means that property owners in Turkey can raise the rent each year based on the CPI rate announced by TÜİK, but the increase cannot exceed the maximum rate set by law.

Any contractual provisions imposing an unfair rent increase to the detriment of the tenant in Turkey above the legal cap, whether in standard terms or separately agreed, are invalid for the part exceeding the CPI cap under TCO Art. 344. Additionally, if a rented property is sold in Turkey, the new owner becomes a party to the existing lease agreement. This means that the rent increase terms agreed upon in the original lease remain valid, and the new owner is bound by them.

Is the Rent Increase in Turkey Based on Tefe or TÜFE?

Under TCO Art. 344, rent increases for residential and roofed commercial leases in Turkey are based solely on the twelve-month average change in the consumer price index (TÜFE/CPI); TEFE and the producer price index (Yİ-ÜFE) are not used. Even if the lease refers to another measure such as the so-called “TEFE-TÜFE average”, the increase cannot exceed the CPI cap.

In its decision Court of Cassation (Yargıtay), 3rd Civil Chamber, E. 2024/1143, K. 2024/2911, 09.10.2024, the Chamber treated a clause increasing the rent “according to the TEFE–TÜFE average” as definite and valid, but stressed that following the amendment made by Law No. 7161, increases in all roofed property leases from 01.01.2019 cannot be higher than the twelve-month average CPI change for the previous lease year. A TEFE-TÜFE clause in the lease is therefore applied only within the CPI cap.

When Is Rent Increased in Turkey?

For residential and roofed commercial leases in Turkey, the rent increase takes place on the contract renewal date, at the start of the new lease year. Rent increase in Turkey occurs when the rental amount paid by the tenant is raised at the end of the period specified in the lease agreement, and is influenced by economic conditions and inflation.

In fixed-term leases, unless the tenant gives notice at least fifteen days before the end of the term, the lease is considered automatically extended for another year in Turkey on the same terms under Turkish Contract Law. The landlord cannot terminate the lease merely because the term has expired. When the lease is extended, a new rental period begins and the rent increase is applied accordingly.

How Many Times a Year Can Rent Be Increased in Turkey?

Rent in Turkey is increased at the start of each renewed lease period; the landlord cannot unilaterally demand a second increase within the same lease period. If a lease agreement is made for one year, the rent increase is calculated each year upon contract renewal based on the Consumer Price Index (CPI) and in accordance with legal criteria. Under TCO Art. 344 this rule also applies to leases longer than one year, and when shorter leases are extended, increases in the renewed periods are subject to the same CPI cap.

What Is the Maximum Rent Increase Rate for Residential Properties in Turkey?

The maximum rent increase rate for residential properties in Turkey is the twelve-month average CPI change for the renewal month, as announced by the Turkish Statistical Institute (TÜİK). As of 2026, rent increases in Turkey can be up to the CPI rate; for a lease renewed in October 2026 this cap is 31.49%. Any contractual provisions to the contrary are invalid to the extent they exceed the cap.

If a different increase rate is specified in the lease agreement and it is lower than the CPI rate, the agreed rate remains valid. However, if the agreed rate exceeds the CPI rate, it is invalid for the part above the CPI rate. Even if the lease agreement is registered with the title deed, any rent increase in Turkey exceeding the CPI rate remains legally unenforceable. Therefore, the highest rent increase rate in Turkey for residential properties is strictly limited to the CPI rate, which is announced every month by TÜİK.

In its decision Court of Cassation (Yargıtay), 12th Civil Chamber, E. 2024/5987, K. 2024/7709, 25.09.2024, the Chamber stated that in residential and roofed commercial leases the rent increase rate for renewed lease periods cannot exceed the CPI. Where the lease provided for an increase of “+ PPI (ÜFE)”, the Chamber found the PPI-based calculation wrong and held that the monthly rent had to be recalculated using the CPI rate. The increase clause was therefore not set aside entirely, but applied reduced to the legal CPI cap.

What Is the Maximum Rent Increase Rate for Commercial Properties in Turkey?

The maximum rent increase rate for commercial properties and shops in Turkey is also the twelve-month average CPI change, as for residential leases. In commercial leases where the tenant is a merchant or a legal entity, TCO Art. 344 did not apply for eight years from 1 July 2012 under Provisional Article 2 of Law No. 6217, and during that period the parties could freely determine the rent increase rate in Turkey. However, a paragraph added to that article by Law No. 7161 made the CPI rule apply to the renewal of these leases as well, and since 1 July 2020 commercial rent increases have been fully subject to the CPI cap in TCO Art. 344. Any contractual provisions contrary to this rule are legally invalid for the part exceeding the cap.

This rule protects tenants and ensures a fairer rent adjustment system in commercial leases. The 25% cap applied to residential leases never covered commercial leases; the CPI cap has always applied to commercial premises.

What Happens If the Lease Agreement Does Not Specify a Rent Increase Rate?

If the lease agreement does not specify a rent increase rate in Turkey, the landlord cannot raise the rent unilaterally; if the parties cannot agree, the new rent is set by the judge. In this case the landlord may file a rent determination lawsuit in Turkey. The judge sets the rent on equitable grounds, taking into account the condition of the property and without exceeding the twelve-month average CPI rate for the previous lease year. If the lawsuit is filed at least thirty days before the new lease period begins, or the landlord notifies the tenant in writing of the increase within that time, the rent set by the court binds the tenant from the start of the new period (TCO Art. 345).

How Is Rent Increased in Leases Longer than Five Years in Turkey?

In leases in Turkey lasting longer than five years or renewed after five years, the rent for the new lease year at the end of every five-year period may be set by the judge without being bound by the CPI cap. The judge considers the change in the CPI, the condition of the property and comparable market rents together to determine an equitable rent. Even in such leases, increases in the intermediate years remain subject to the CPI cap.

Before filing a lawsuit concerning the determination of rent in Turkey, applying to mediation is mandatory (Law No. 6325, Art. 18/B). If no agreement is reached in mediation, the parties may then file a rent determination lawsuit.

When Was the 25% Legal Limit on Rent Increases Removed in Turkey?

The legal 25% cap on residential rent increases in Turkey applied to lease periods renewed up to and including 1 July 2024, and then ended. It was a temporary rule introduced by Provisional Articles 1 and 2 of the TCO; for residential leases renewed on or after 2 July 2024, increases are calculated on the basis of the 12-month average CPI rate, or the parties may agree on another rate provided that it does not exceed the CPI rate.

To protect tenants’ rights in Turkey and prevent potential disputes, it is essential to stay informed about legal regulations. The 25% cap applied only to residential leases and did not cover commercial leases.

Is VAT or Withholding Tax Included in the Rent?

Whether VAT or withholding tax is included in the rent in Turkey depends less on whether the property is residential or commercial than on the tax status of the landlord and the tenant and the terms of the lease agreement. It is advisable to seek assistance from a tax lawyer in Turkey to ensure that tax obligations are clearly defined in lease agreements.

• Is VAT Added to Rent in Turkey?

Leasing a property that does not belong to a business enterprise, such as a residence or shop privately owned by an individual, is exempt from VAT in Turkey (VAT Law Art. 17/4-d). If the property is recorded in the assets of a company or business, VAT in Turkey is charged on the rent regardless of whether it is residential or commercial; the general rate applied to commercial rents is 20%. In such cases, whether VAT is included in the rent must be specified in the lease agreement.

• Is Withholding Tax Deducted from Rent in Turkey?

Withholding tax is an income tax deduction on rent payments, and a tenant listed in Article 94 of the Income Tax Law as a withholding agent deducts it from the rent and pays it to the tax office on behalf of the property owner. For building rents the rate is 20%. Companies, public bodies, associations and foundations, and merchants and self-employed professionals required to declare their actual income fall within this scope, so withholding tax depends on the tenant’s status, not on whether the property is residential or commercial. If the tenant is not one of these, for example an employee renting a home to live in, no withholding tax is deducted.

• Who Pays Property Tax and Environmental Cleaning Tax in Turkey?

Property tax is owed by the owner (or the usufruct holder, if any) and is paid by the landlord; the tenant has no obligation regarding this tax (Property Tax Law Art. 3). Under Turkish real estate law, the taxpayer for the environmental cleaning tax is the user of the building; for residences it is calculated on the basis of water consumption, so in a rented home it is paid by the tenant (Municipal Revenue Law, Additional Art. 44).

Can Rent Increase Rates Be Objected to in Turkey?

A tenant in Turkey is not obliged to accept a rent increase exceeding the legal cap and has the right to object to it. Because rent increases for residential and roofed commercial properties are tied to the Consumer Price Index (CPI) cap, if a landlord demands an increase exceeding the legal limit, the tenant is not obligated to accept it.

Tenants can use the calculator above to review whether the requested increase complies with legal limits and, if necessary, object to it, requesting an adjustment within the legal framework. In such cases, the tenant has the right to challenge excessive rent increases and refuse any unlawful adjustments.