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Türkiye Deposit Interest Calculator: TL and FX

Rules and data: TürkiyeBy Hesaplayıcı

The deposit interest calculator finds the gross interest, the withholding tax, the net interest and the final amount of a Turkish time deposit in lira, foreign currency or gold. Enter the currency, the principal, the annual gross rate, the term in days, months or years and the opening date. The calculator picks the withholding rate in force that day.

The yearly gross rate the bank offers for the time deposit.

For example 32 days, 3 months or 1 year. Months and years count on the calendar from the opening date.

More optionsOpening date, Withholding rate

The day the deposit is opened or renewed. Empty means today. The withholding rate follows this day.

Leave empty for the legal rate on the opening date (today, TL: 17.5% up to 6 months, 15% up to 1 year, 10% beyond; foreign currency: 25%). For a gold account, enter your bank’s rate.

Worked example: 100,000 TRY at 40% a year for 32 days

Net interest

2,893.15 TRY

Gross interest
3,506.85 TRY
Withholding tax
613.70 TRY
Final amount
102,893.15 TRY
Withholding rate
17.50%
Term
32 days

Data period: the values in force from July 9, 2025.

Step by step

  1. Term

    days = maturity − opening

    days = 2026-12-04 − 2026-11-02 = 32

  2. Gross interest

    gross interest = principal × annual rate × days / 365

    gross interest = 100,000.00 × 40% × 32 / 365 = 3,506.85 TRY

  3. Withholding rate

    withholding rate = the rate in force on the opening day, by term and currency type

    withholding rate (TL, 2026-11-02 → 2026-12-04) = 17.5% = 17.50%

  4. Withholding tax

    withholding = gross interest × withholding rate

    withholding = 3,506.85 × 17.5% = 613.70 TRY

  5. Net interest

    net interest = gross interest − withholding

    net interest = 3,506.85 − 613.70 = 2,893.15 TRY

  6. Final amount

    final amount = principal + net interest

    final amount = 100,000.00 + 2,893.15 = 102,893.15 TRY

finance.deposit-interest.tr

How to use

  1. Select the Currency: Turkish lira, US dollar, euro, British pound, Swiss franc or gold.
  2. Enter the Principal in that currency. For gold, enter grams.
  3. Enter the Annual gross interest rate the bank offers for the time deposit.
  4. Enter the Term as a number and select its unit: days, months or years.
  5. Under More options, leave the Opening date empty for today, or enter the day the deposit was opened or renewed.
  6. Leave the Withholding rate empty to use the legal rate. For a gold account, enter your bank’s rate.
  7. Press Calculate.

Formula

  • Days = maturity − opening date
  • Gross interest = principal × annual rate × days / 365
  • Withholding = gross interest × withholding rate
  • Net interest = gross interest − withholding
  • Final amount = principal + net interest

The annual rate is the bank’s gross rate, written as a decimal: 0.40 for 40%. Months and years count on the calendar: a 3-month deposit opened on 22 September matures on 22 December, 91 days later.

How the withholding rate is chosen

The withholding rate is the one in force on the day the deposit is opened or renewed, not on the day the interest is paid. It depends on the currency and the term. Since 9 July 2025, TL time deposits pay 17.5% up to 6 months (6 months included), 15% up to 1 year (1 year included) and 10% over 1 year (Presidential Decision 10041). Foreign currency deposits pay 25% on every term since 28 June 2023 (Presidential Decision 7332).

The calculator keeps the rates of every period since 2005. For an older deposit, enter its opening date and the rate of that day applies; a 3-month TL deposit opened in 2022, for example, paid 5%. The term counts in months from the opening day: a deposit that matures no later than the day 6 months after opening takes the “up to 6 months” rate.

Worked example

The worked example on this page shows 100,000 TRY deposited for 32 days at a gross 40% a year. The term is shorter than 6 months, so the withholding rate is the opening day’s rate for terms up to 6 months. The steps give the days, the gross interest, the withholding rate, the withholding, the net interest and the final amount.

Limits

The calculator covers one term; it does not compound interest across renewals. For a gold account you enter the withholding rate, because banks apply different rates. Participation accounts take the same withholding rates, but their profit share is not known in advance, so the calculator does not cover them. FX-protected deposits (KKM), TL accounts converted from foreign currency or gold, and inflation-linked accounts are out of scope. Amounts are rounded to the kuruş, the cent or 0.01 gram of gold.

Frequently Asked Questions

How is deposit interest calculated in Türkiye?

Gross interest is principal × annual rate × days / 365. The net interest is the gross interest minus the withholding tax.

What is the withholding tax on Turkish lira deposits?

For TL time deposits opened or renewed since 9 July 2025, withholding is 17.5% on demand deposits and terms up to 6 months, 15% up to 1 year and 10% over 1 year (Presidential Decision 10041).

Which date sets the withholding rate?

The rate in force on the day the deposit is opened or renewed applies, not the rate on the day the interest is paid.

What is the withholding on a 32-day deposit?

32 days is shorter than 6 months. Deposits opened or renewed since 9 July 2025 pay 17.5% withholding.

What is the withholding tax on foreign currency deposits in Türkiye?

Foreign currency deposits opened or renewed since 28 June 2023 pay 25% withholding on every term (Presidential Decision 7332).

Are the withholding rates temporary?

No. Decision 10041 changed the rates with no end date; they stay until a new decision.

How many days a year do Turkish banks count?

Turkish banks count a year as 365 days for TL and foreign currency deposit interest.

Calculation rules

  • Gross interest = principal × annual rate × days / 365. Turkish banks count a year as 365 days for TL and foreign currency deposits. The days are calendar days from the opening date to maturity: 3 months end on the same day three months later.
  • The withholding rate is the one in force on the day the deposit is opened or renewed (Income Tax Law provisional article 67 and Decision 2006/10731). Since 9 July 2025, TL time deposits pay 17.5% up to 6 months (6 months included), 15% up to 1 year (1 year included) and 10% over 1 year (Presidential Decision 10041, Official Gazette 9 July 2025, no. 32951); the decision has no end date. Foreign currency deposits pay 25% on every term since 28 June 2023 (Presidential Decision 7332).
  • The calculator keeps the rates of every period since 2005 and counts the term in months from the opening day: a deposit whose maturity is not later than the day 6 months after opening takes the "up to 6 months" rate.
  • On a gold account the interest and the withholding are in grams. Banks apply their own rate to gold accounts; you enter the withholding rate.
  • Amounts are rounded to the kuruş (the cent, or 0.01 gram of gold), half up: first the gross interest, then the withholding tax.
  • Interest is paid once at maturity; rolling the deposit over and earning interest on interest is not calculated. Participation accounts take the same withholding rates, but their profit share is not known in advance. FX-protected deposits (KKM), TL accounts converted from foreign currency or gold, and inflation-linked accounts are left out.
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