US Treasury Securities
US Treasury Bill Calculator 2026
Treasury bills are short-term government securities sold at a discount to face value. This calculator converts a quoted bank-discount rate into an estimated purchase price and discount amount.
Official Standards & Rule Matrix
TermsCommon 4, 8, 13, 17, 26 and 52-week bills
MethodBank-discount basis, not APY
OutputsPurchase price and discount amount
ScopeEstimate only; auction results control the actual price
How to use this tool
- Enter the face value and the bill term.
- Enter the quoted discount rate.
- Review the estimated purchase price and discount.
- Compare with the actual auction result and your broker’s quote.
Computed completely in your browser. No personal data or numbers are transmitted over the network.
Frequently Asked Questions
- Is the discount rate the same as the yield?
- No. The bank-discount rate is quoted on a 360-day basis and is not the same as the investment yield or APY. Compare both carefully.
- Are Treasury bills state-tax free?
- Interest on US Treasury obligations is generally exempt from state and local income tax, but federal tax still applies. Confirm with a tax professional.
- Can I lose principal?
- If you hold a Treasury bill to maturity, the US government pays face value. Selling before maturity can produce a gain or loss based on market prices.
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