1 Month Treasury Bill Calculator





{primary_keyword} – Quick & Accurate 1‑Month Treasury Bill Calculator


{primary_keyword}

Calculate the price, discount yield and annualized return of a 1 month Treasury bill instantly.

Calculator


The amount paid at maturity (usually $1000).

Annual discount rate quoted for the bill.

Number of days until the bill matures (≈30 for 1‑month).


Breakdown of 1‑Month Treasury Bill Calculation
Item Value
Price
Discount Yield
Annualized Yield (Holding‑Period Return)


What is {primary_keyword}?

{primary_keyword} is a tool that helps investors determine the price, discount yield, and annualized return of a 1 month Treasury bill. Treasury bills are short‑term government securities sold at a discount and redeemed at face value. Anyone looking to park cash for a month, manage liquidity, or compare short‑term yields can benefit from using a {primary_keyword}.

Common misconceptions include thinking the quoted rate is the actual return; in reality, the discount rate must be converted to a price and then to an annualized yield.

{primary_keyword} Formula and Mathematical Explanation

The core formulas used by the {primary_keyword} are:

  1. Price = Face × (1 – (Discount Rate × Days / 360))
  2. Discount Yield = (Discount Rate × Days / 360) × 100 %
  3. Annualized Yield = ((Face – Price) / Price) × (360 / Days) × 100 %

These equations convert the annual discount rate into the actual purchase price and then into an annualized return that can be compared with other investments.

Variables

Variables used in the {primary_keyword}
Variable Meaning Unit Typical Range
Face Face value at maturity Currency 500 – 10,000
Discount Rate Annual discount rate quoted % 0 – 10
Days Days until maturity Days 30 – 365

Practical Examples (Real‑World Use Cases)

Example 1

Face Value: 1000
Discount Rate: 4.5 %
Days to Maturity: 30

Price = 1000 × (1 – (0.045 × 30 / 360)) = 1000 × (1 – 0.00375) = 996.25

Discount Yield = 0.045 × 30 / 360 × 100 % = 0.375 %

Annualized Yield = ((1000 – 996.25) / 996.25) × (360 / 30) × 100 % ≈ 4.50 %

Example 2

Face Value: 5000
Discount Rate: 6 %
Days to Maturity: 30

Price = 5000 × (1 – (0.06 × 30 / 360)) = 5000 × (1 – 0.005) = 4975.00

Discount Yield = 0.06 × 30 / 360 × 100 % = 0.50 %

Annualized Yield = ((5000 – 4975) / 4975) × (360 / 30) × 100 % ≈ 6.00 %

How to Use This {primary_keyword} Calculator

  1. Enter the face value of the bill.
  2. Enter the quoted annual discount rate.
  3. Enter the number of days to maturity (default 30 for a 1‑month bill).
  4. Results update instantly showing price, discount yield and annualized yield.
  5. Use the “Copy Results” button to paste the figures into your analysis.
  6. Reset to start a new calculation.

Key Factors That Affect {primary_keyword} Results

  • Discount Rate: Higher rates lower the purchase price and increase the annualized yield.
  • Days to Maturity: Longer periods spread the discount over more days, affecting price and yield.
  • Market Liquidity: In tight markets, yields may compress, altering the effective discount.
  • Inflation Expectations: Anticipated inflation can shift demand for short‑term Treasury bills.
  • Tax Treatment: Interest from Treasury bills is exempt from state and local taxes, influencing net return.
  • Opportunity Cost: Comparing the bill’s yield to alternative short‑term instruments (e.g., money market funds) is essential.

Frequently Asked Questions (FAQ)

What is the difference between discount yield and annualized yield?
Discount yield reflects the quoted rate applied to the face value, while annualized yield converts the actual return on the purchase price to an annual basis.
Can I use the calculator for bills longer than one month?
Yes, simply change the “Days to Maturity” field; the formulas remain valid for any Treasury bill.
Why is a 360‑day year used?
U.S. Treasury bills conventionally use a 360‑day year for discount calculations.
Do I need to consider taxes?
Federal tax applies, but state and local taxes are exempt. Adjust your net return accordingly.
What happens if I enter a discount rate above 100%?
The calculator will display an error; discount rates above 100% are not realistic.
Is the price always lower than the face value?
Yes, Treasury bills are sold at a discount; the price is always below the face value.
How accurate is the real‑time chart?
The chart reflects the current inputs and updates instantly; it is as accurate as the data entered.
Can I copy the chart image?
Use your browser’s right‑click “Save image as…” to download the canvas as a PNG.

Related Tools and Internal Resources

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