TBillLab

8 Week T-Bill Calculator

Yield and profit on an 8-week (56-day) T-bill.

Your T-bill numbers never leave your browser — all math runs locally.
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Try: Face value=1000, Purchase price=992, Days to maturity=56 → $1,000, $992, $8, 0.0514%, 0.0526%, 0.0526%

How to use

8-week bills fill the gap between the 4- and 13-week tenors and also auction weekly.

FAQ

Who uses 8-week bills?

Treasury added them in 2024 to give investors more short-term ladder rungs.

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