Calculate Interest On 3 Month Zero Coupon Treasury Bill

Calculate Interest on 3-Month Zero Coupon Treasury Bill




Zero coupon treasury bills are short-term debt obligations issued by the U.S. Department of the Treasury. They are sold at a discount to their face value and mature at their full face value. Understanding how to calculate the interest on these bills is crucial for investors and financial institutions.

  1. Enter the face value of the treasury bill.
  2. Enter the discount rate.
  3. Enter the number of days until maturity.
  4. Click ‘Calculate’.

The formula to calculate the interest on a zero coupon treasury bill is:

Interest = Face Value * (1 – (1 + Discount Rate)^(-Maturity Days / 360))

Comparison of Zero Coupon Treasury Bills
Face Value Discount Rate Maturity Days Interest
$1,000 2% 90 $18.18
$5,000 3% 180 $454.55
Historical Discount Rates for 3-Month Treasury Bills
Year Average Discount Rate
2015 0.12%
2016 0.54%
2017 1.38%
  • Always check the current discount rate before investing in zero coupon treasury bills.
  • Consider the maturity date and your investment horizon when choosing a bill.
  • Diversify your portfolio to spread risk.
What is the difference between a zero coupon treasury bill and a coupon bond?

A zero coupon treasury bill does not pay interest, while a coupon bond pays interest periodically.

Can I reinvest the interest from a zero coupon treasury bill?

Yes, you can reinvest the interest, but you will need to pay taxes on the interest income.

For more information, see the U.S. Department of the Treasury and the Board of Governors of the Federal Reserve System.

Zero coupon treasury bill calculator Zero coupon treasury bill example

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