Tool · rates updated 17 October 2026
Turkish interest calculator
Calculate statutory or commercial default interest on a claim against a Turkish debtor, period by period, using the official Turkish rates.
Which rate applies to a claim in Türkiye?
- Statutory interest applies where no rate was agreed in a non-commercial matter (Law No. 3095, Art. 1). From 31 July 2026 it equals 80% of the Central Bank's rediscount rate on 31 December of the previous year (31% for 2026).
- Commercial default interest: in commercial matters with no agreed default rate, the creditor may claim the Central Bank's short-term advance rate (Art. 2/2). By law the rate on 31 December applies for the following year; if the rate on 30 June differs by 5 points or more, that rate applies for the second half of the year.
If your contract sets a default rate, use the fixed rate option.
Rates used in this tool
| Type | Period | Annual rate |
|---|---|---|
| Statutory interest | 1 January 2006 – 31 May 2024 | 9% |
| 1 June 2024 – 30 July 2026 | 24% | |
| 31 July 2026 – … | 31% | |
| Commercial default interest (CBRT advance rate) | 21 December 2019 – 12 June 2020 | 13.75% |
| 13 June 2020 – 18 December 2020 | 10.0% | |
| 19 December 2020 – 30 December 2021 | 16.75% | |
| 31 December 2021 – 30 December 2022 | 15.75% | |
| 31 December 2022 – 23 June 2023 | 10.75% | |
| 24 June 2023 – 31 August 2023 | 16.75% | |
| 1 September 2023 – 27 September 2023 | 26.75% | |
| 28 September 2023 – 31 October 2023 | 31.75% | |
| 1 November 2023 – 30 November 2023 | 36.75% | |
| 1 December 2023 – 22 December 2023 | 41.75% | |
| 23 December 2023 – 31 March 2024 | 44.25% | |
| 1 April 2024 – 27 December 2024 | 51.75% | |
| 28 December 2024 – 7 March 2025 | 49.25% | |
| 8 March 2025 – 16 September 2025 | 44.25% | |
| 17 September 2025 – 19 December 2025 | 42.25% | |
| 20 December 2025 – … | 39.75% |
Estimate only, not legal advice. The start date and the applicable rate depend on the facts of each claim.
See also: Debt collection in Turkey