Enter the principal and the dates; the calculator applies the Turkish statutory (legal) interest rates under Law No. 3095 period by period. The current rate is 31% per year since 31 July 2026.
| Period | Days | Rate | Interest |
|---|
Which rates are applied?
| Period | Annual rate | Legal basis |
|---|---|---|
| 01.01.2006 – 31.05.2024 | 9% | Council of Ministers Decision No. 2005/9831 |
| 01.06.2024 – 30.07.2026 | 24% | Presidential Decision No. 8485 (Official Gazette 21.05.2024, No. 32552) |
| From 31.07.2026 | 31% | Art. 1 of Law No. 3095 as amended by Art. 10 of Law No. 7589 (Official Gazette 31.07.2026, No. 33326): 80% of the Central Bank’s rediscount rate on 31 December of the previous year (31.12.2025: 38.75%) |
Under the new system the rate is set each year by reference to the rediscount rate of 31 December of the previous year. If the rate on 30 June differs from it by five points or more, 80% of the 30 June rate applies in the second half of the year. Published commentary reports that this did not occur in 2026.
How is it calculated?
- Simple interest: principal × annual rate × days / 365.
- Where the rate changes, the term is split into periods and each period uses its own rate.
- The start date is excluded; the calculation date is included.
What it does not cover
- Contractual interest, the commercial default (advance) rate used in commercial matters, late-payment surcharges on public receivables, and partial payments.
- Which interest type and start date apply depends on the facts of each case; the result is an estimate.
More: Debt collection in Turkey · Enforcing foreign judgments in Turkey
General information only, not legal advice. Rates compiled as of 19.10.2026 from published reports of the Official Gazette; for a definitive figure, check the Official Gazette text and the facts of your file.