T-Bill Calculator
Estimate how much a live U.S. Treasury bill could earn by maturity based on current bill data and your investment amount.
This calculator is designed for short-term cash planning. It helps you estimate purchase price, expected interest, and maturity value using currently available Treasury bill data.
Want to compare a Treasury bill against a savings account? Use the Compare Tool →
Want to structure multiple bills over time? Build a Treasury Ladder →
Selected Treasury Bill
- Security
- —
- Issue Date
- —
- Maturity Date
- —
- Days
- —
- Annual Yield
- —
Estimated Return
- Investment Amount
- $0.00
- Estimated Interest
- $0.00
- Maturity Value
- $0.00
- Purchase Price
- $0.00
- Annualized Return
- 0.00%
How this calculator works
This tool uses currently available Treasury bill data to estimate how much you could earn by maturity based on the amount you enter and the bill you select.
Treasury bills are generally sold at a discount and mature at full face value. This calculator estimates the difference between your purchase price and maturity value using current bill information.
Actual auction pricing, settlement timing, and brokerage mechanics may differ slightly. This calculator is for educational and planning purposes only and does not constitute financial advice.
Email these results to yourself
Save this Treasury bill estimate and get occasional Treasury and cash-yield updates.
When this calculator is useful
- Estimating what a specific T-bill could earn by maturity
- Planning short-term cash for a known future date
- Comparing Treasury bills with savings accounts
- Choosing amounts for a Treasury ladder
- Understanding how short-term government yields translate into dollars
What affects your estimate
- The live Treasury bill you select
- The annual yield associated with that bill
- The number of days until maturity
- Your investment amount
- How actual auction or purchase pricing differs from a simplified estimate
Treasury bill calculator FAQ
Does this calculator use live data?
Yes. The bill selector is populated from live Treasury bill data sourced from the U.S. Treasury.
Is this the exact amount I will earn?
It is an estimate for planning purposes. Actual purchase price, settlement timing, and execution details may vary slightly.
Is this better than a savings account?
It depends on your timeline. Treasury bills are often better for cash you can leave untouched until maturity, while savings accounts are usually better for immediate access.
Can I use this for ladder planning?
Yes. This calculator is useful for estimating individual ladder rungs before using the full ladder builder.
Learn more before you invest
If you are using this calculator as part of a broader cash strategy, these guides can help: