Tools / Faiz & Alacak

Interest Calculator

Calculate accrued interest and the total amount based on principal, interest rate and number of days.

Total (Principal + Interest)
124.000 ₺
Principal (₺) 100.000
Annual Interest Rate (%) 24
Number of Days 365

What is interest?

Interest is the amount paid to a creditor in return for the use of a sum of money over a period or for its late payment. The most common types in law are statutory interest, default (late-payment) interest, and advance interest applied in commercial matters. Rates are linked to legislation and to rates set by the Central Bank.

Where the debtor is in default (once conditions such as maturity and notice are met), the creditor may claim default interest without needing to prove any loss.

How is interest calculated?

This tool uses simple interest: Interest = Principal × (Annual Rate / 100) × (Days / 365). The total is the principal plus accrued interest. Compound interest is, as a rule, applied only where the law permits.

Types of interest

  • Statutory interest: the legal rate applied where no rate is agreed.
  • Default interest: interest accruing when a debt is not paid on time.
  • Advance interest: the (usually higher) rate applied in commercial matters.

Example calculation

Principal 100,000 ₺, annual rate 24%, 365 days: 100,000 × 0.24 × (365/365) = 24,000 ₺ accrued interest. Total: 100,000 + 24,000 = 124,000 ₺.

Points to watch

  • The start date (default date) must be set correctly; usually the notice or filing date is taken.
  • The applicable rate varies by the nature of the claim (civil/commercial) and the period.
  • This tool assumes a fixed rate and simple interest; periods with variable rates must be computed separately.

Frequently Asked Questions

What is the statutory interest rate?

Statutory and default rates change periodically with legislation and Central Bank rates; enter the current rate after checking it.

Is compound interest applied?

As a rule interest on interest is not charged; it is possible only where the law allows, such as commercial and current accounts.

From when does interest run?

Usually from the date the debtor falls into default (notice, maturity or filing date).

The result is for information only; the rate varies by interest type and period.