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Treasury Bill Calculator

Enter the bill’s face value, days to maturity and the rate or purchase price. The price or yield, the simple and compound yearly yield and the net gain after withholding are worked out.

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Enter it to get the yield; leave empty to price from the rate below.

 

Bought

For individuals, withholding depends on the purchase date.

Bill price84,070.39₺182 days to maturity, at 38%
  • Yearly simple yield38%
  • Yearly compound yield41.62%
  • Gross gain15,929.61 ₺
  • Withholding (0%)0.00 ₺
  • Net gain15,929.61 ₺

Withholding rates: GİB / Cumhurbaşkanı Kararı

How it is calculated

A Treasury bill is government debt under a year, issued at a discount without coupons: you pay less than face value today and receive face value at maturity, the difference being the interest. Longer ones are government bonds; use the bond calculator for those with coupons.

FormulaFiyat = Nominal ÷ (1 + r × g ÷ 365); Basit getiri = (Nominal ÷ Fiyat − 1) × 365 ÷ gr: yearly simple rate · g: days to maturity. For individuals, government securities bought between 1 Jul 2026 and 31 Dec 2026 carry 0% withholding, others 10%.

Example

A ₺100,000 bill with 182 days to go costs ₺84,070.39 at a 38% simple rate; its compound yearly yield is 41.62%.

Frequently asked questions

Is withholding tax due on Treasury bills?

For individuals it depends on the purchase date: government bonds, bills and Treasury lease certificates bought between 1 Jul 2026 and 31 Dec 2026 carry 0%, others 10%.

Source

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