B2B Default, Interest, and Lump-Sum Penalty 'Acceleration' (Turkey)
Legal interest that can be applied to delayed rents in Turkey commercial leasing and the prohibition of exorbitant penalties (acceleration) placed in the contract.
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This content is for general informational and educational purposes only. It does not constitute legal advice and should not be relied upon as such. Laws change frequently — always verify current regulations and consult a licensed attorney in your jurisdiction for advice specific to your situation. Landager is a property management platform, not a law firm.Information last verified: May 2026.
Under the Turkish Code of Obligations (Law No. 6098), penalty clauses (such as flat lump-sum late fees) and acceleration clauses (where a single delayed payment makes the entire remaining lease term's rent immediately due) are strictly prohibited and legally void in residential lease agreements. These mandatory protections under Article 346 apply to residential tenants to prevent excessive financial burdens.
1. The Prohibition of Acceleration and Penalty Clauses (Article 346)
Article 346 of the Turkish Code of Obligations (TCO) strictly limits the financial penalties a landlord can impose on a residential tenant. Specifically, it prohibits agreements that impose a penalty condition (such as a fixed monetary fine) in the event of late payment.
Furthermore, acceleration clauses are completely invalid. A residential lease contract cannot state that if a tenant is late on one month's rent, all future rent for the remainder of the lease term becomes immediately due and payable. These mandatory provisions of Law No. 6098 apply to residential contracts and override any conflicting terms written into the lease agreement. Disputes are typically adjudicated in the Civil Peace Courts (Sulh Hukuk Mahkemeleri).
2. Residential Default Interest and Grace Periods
While punitive late fees and acceleration clauses are prohibited, landlords are entitled to charge default interest on delayed payments.
- Statutory Grace Period: Under Article 315 of the TCO, landlords must provide a formal written notice giving residential tenants at least a 30-day grace period to pay overdue rent. The lease cannot be terminated for non-payment until this 30-day period expires without payment. This mandatory statutory grace period overrides any lease agreement claiming the right to immediate termination.
- Default Interest: Instead of flat penalty fees, landlords can apply default interest to late payments. The general provisions of the Law on Legal Interest and Default Interest (Law No. 3095) and the TCO govern these rates. Unlike commercial transactions, residential leases do not use the specific "Commercial Default Interest" (Avans Faizi) rates. Default interest rates are subject to statutory limits to prevent the imposition of exorbitant charges on residential tenants.
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Frequently Asked Questions
▶What are the key landlord-tenant laws in Turkey?
Tenancy relations in Turkey are regulated by the Turkish Code of Obligations (TCO). The law is notoriously protective of tenants, treating them as the economically weaker party. This guide covers the essential compliance requirements for property owners and landlords.
Read the complete guide▶What is the legal eviction process for landlords in Turkey?
The eviction process in Turkey requires landlords to follow formal legal procedures. Valid grounds typically include non-payment of rent, lease violations, or the landlord's personal use of the property. Landlords must provide proper written notice, allow any required cure periods, and may need to obtain a court or tribunal order. Self-help evictions are generally prohibited.
Read the complete guide▶What are the rent increase limits and caps in Turkey?
Turkey has specific rules governing when and how landlords can increase rent. These rules may include caps on the percentage of increase, minimum notice periods, and restrictions on frequency. Landlords must comply with all applicable regulations when raising rent on existing tenancies.
Read the complete guide▶What are the security deposit rules and return deadlines in Turkey?
Turkey has rules governing how much landlords can charge as a security deposit, how deposits must be held or protected, and the timeline for returning deposits after a tenancy ends. Landlords must provide itemized statements of any deductions and comply with all statutory deadlines to avoid penalties.
Read the complete guide▶What are the mandatory lease requirements in Turkey?
Lease agreements in Turkey must comply with applicable national and local laws. Required elements typically include the names of both parties, property description, rent amount and payment terms, deposit details, lease duration, and maintenance responsibility allocation. Written leases may be required for certain tenancy types or durations.
Read the complete guide▶What are the landlord maintenance and repair obligations in Turkey?
Landlords in Turkey are generally required to maintain rental properties in a habitable condition, keeping the structure, plumbing, electrical systems, and essential services in proper working order. The specific allocation of maintenance responsibilities between landlord and tenant should be clearly documented in the lease agreement.
Read the complete guide▶What are the late fee and penalty rules for rental properties in Turkey?
Turkey has specific rules regarding late fees and penalties for overdue rent. These may include mandatory grace periods, caps on late fee amounts, and restrictions on interest charges. Late fee provisions should be clearly stated in the lease agreement and must comply with local regulations to be enforceable.
Read the complete guide▶What property disclosures are landlords required to make in Turkey?
Landlords in Turkey must disclose relevant information about the property to prospective tenants before the lease is signed. Required disclosures typically include known material defects, environmental hazards, previous damage history, and any conditions that could affect the tenant's use and enjoyment of the property.
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