TBillLab

T-Bill Yield to Maturity Calculator

The yield you earn by holding a T-bill to maturity.

Your T-bill numbers never leave your browser — all math runs locally.
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Try: Face value=1000, Purchase price=980, Days to maturity=182 → $1,000, $980, $20, 0.0396%, 0.0409%, 0.0409%

How to use

Held to maturity, the BEY is your realized annual return — there is no market-risk swing.

FAQ

Is yield to maturity guaranteed?

Yes, for a held-to-maturity T-bill bought at a known price.

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