Treasury bill yield calculator

Discount price to annualised yield.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18

Face value

Purchase price

Days to maturity

Annualised yield

5.142%

Profit at maturity

$25

With these inputs, annualised yield comes to 5.142%. Profit at maturity works out to $25.

What moves the number · Annualised yield

Input	−10%	Now	+10%
Face value	-15.427%	5.142%	25.711%
Purchase price	27.997%	5.142%	-13.557%
Days to maturity	5.714%	5.142%	4.675%

Whatmakesequal

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Discount price to annualised yield.

With the defaults above, annualised yield works out at 5.142%.