Term deposit calculations

At maturity a depositor is paid the gross interest less withholding tax.

Updated: 2 November 2026

Term deposit calculations screen in the Bankacı app

From gross to net

Interest runs on the principal over the days of the term. Withholding tax comes off the gross interest and the net yield is what remains. Bankacı shows all three, because the figure quoted to a customer is usually the gross rate.

The tax rate follows the term

On Turkish lira term deposits the withholding rate varies with the length of the term and is lower on longer terms. Bankacı leaves the rate editable, because these rates are changed by regulation.

Withholding tax in force (TL time deposits)

Term	Withholding rate
Demand, notice and up to 6 months	17.5%
Up to 1 year	15%
Over 1 year	10%

For accounts opened or renewed from 9 July 2025. Banks cut the brackets by days: up to 180 days 17.5%, 181 to 365 days 15%, 366 days and over 10%, and Bankacı suggests the same. Basis: Presidential Decision 10041 (Official Gazette 9 July 2025, no. 32951); the 10% from Decision 9487 (Official Gazette 1 February 2025, no. 32800).

How the net return is worked out

Gross interest = principal × annual gross rate × days / 365. Net = gross − withholding.

Open to everyone

The deposit calculator is not for bankers only: in the app it is free for anyone, with no account and no Premium. A customer weighing up a term deposit can run the same numbers themselves.

Frequently asked

Do I need an account or Premium to calculate a deposit?

No. The deposit calculator in the app is open to everyone and free; it works without signing in.

Can I change the withholding rate?

Yes. The default is the prevailing rate, but the field is open, so you do not have to wait for an app update when regulation moves.

Is compounding included?

The calculation gives the yield at maturity. For the compound effect of rollovers, repeat the calculation with the new principal.

How is the net return on a term deposit worked out?

Gross interest is principal × annual rate × days / 365, and the withholding comes off it. On terms up to 180 days the withholding is 17.5% today.

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Details

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