If you are buying or selling a US Treasury Bill, you can use this online converter to calculate the discount rate from from a given BEY (Bond Equivalent Yield), also called investment/interest rate or coupon equivalent yield. Other performance measures are also provided, including interest income at maturity.

Discount rate and other information calculated by FYIcenter.com:

Discount rate: 2.2729%.

Security Details:
  Security type: US Treasury Bill
  Unit price: $97.7018 for $100.00 face value
  Accrued interest: $0.00 for $1,000.00 face value.
  Totoal price: $977.0181 for $1,000.00 face value
  Discount rate: 2.2729%
  BEY (Bond Equivalent Yield): 2.3450%
  YTM (Yield To Maturity): 2.3588%.
  Maturity date: 2026-10-14
  Days/months/years/weeks left: 364/11.97/1.00/52.00

Income Information:
  Interest income for 2026: $22.98
  Capital gain income for 2026: $0.00
  Total income: $22.98

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Sensibility Tests: 
        BEY    Chg Val |  Disc Rate    Chg Val
  ---------  --------- |  ---------  ---------
    2.3450%   baseline |    2.2729%   baseline
    2.4450%     0.1000 |    2.3681%     0.0952
    3.3450%     1.0000 |    3.2184%     0.9455

--------------------------------------------
Related Conversion Tools:
  Discount Rate to Price Converter for T-Bills
  Price to Discount Rate Converter for T-Bills
  BEY (Bond Equivalent Yield) to Price Converter for T-Bills
  Price to BEY (Bond Equivalent Yield) Converter for T-Bills
  BEY to Discount Rate Converter for T-Bills
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  YTM (Yield To Maturity) to Price Converter for T-Bills
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  YTM to Discount Rate Converter for T-Bills
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  YTM to BEY (Bond Equivalent Yield) Converter for T-Bills
  BEY (Bond Equivalent Yield) to YTM Converter for T-Bills

The following formula is used in the above calculations:

$F=P\times (1+i\times {\displaystyle \frac{{\displaystyle \frac{\mathrm{Year}}{2}}}{\mathrm{Year}}})\times (1+i\times {\displaystyle \frac{\mathrm{Days}-{\displaystyle \frac{\mathrm{Year}}{2}}}{\mathrm{Year}}})$
$P=\text{Purchase price}$
$F=\text{Face value}$
$i=\text{BEY (Bond Equivalent Yield)}$
$\mathrm{Days}=\text{Days to maturity}$
$\mathrm{Year}=\text{365 or 366}=\text{Actual number of days in the year}$

As you can see from the above formula, the BEY (Bond Equivalent Yield) represents the annualized rate of the compounding interest you earn on your investment (the price you paid for the T-Bill).

Note that if the T-Bill is maturing in less than or equal to one half-year, the compounding interest should be replaced by a simple interest.

For more information, see the following tutorials:

• Discount Rate of US Treasury Bill
• BEY (Bond Equivalent Yield) of Short US Treasury Bill
• BEY (Bond Equivalent Yield) of Long US Treasury Bill

⇒ Discount Rate to BEY Converter for T-Bills

⇐ Price to BEY (Bond Equivalent Yield) Converter for T-Bills

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