Treasury Bill Price Formula:
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The Treasury Bill Price is the discounted price paid for a T-bill, which is a short-term U.S. government debt obligation with a maturity of one year or less. The price is calculated based on the face value, yield, and days to maturity.
The calculator uses the Treasury Bill Price formula:
Where:
Explanation: The formula discounts the face value based on the yield and time to maturity, using the bank discount method with a 360-day year.
Details: Accurate T-bill pricing is essential for investors to determine the appropriate purchase price and to compare returns with other short-term investment options.
Tips: Enter face value in dollars, yield as a decimal (e.g., 0.05 for 5%), and days to maturity (1-360). All values must be valid (face value > 0, yield ≥ 0, days 1-360).
Q1: Why use a 360-day year instead of 365?
A: The 360-day year is a banking convention that simplifies interest calculations for short-term instruments.
Q2: How does this differ from bond pricing?
A: T-bills are zero-coupon instruments priced at a discount, while bonds typically pay periodic interest and return principal at maturity.
Q3: What's the relationship between price and yield?
A: They have an inverse relationship - as yield increases, price decreases, and vice versa.
Q4: Are there limitations to this calculation?
A: This uses the bank discount method which slightly differs from the more precise money market yield calculation.
Q5: How often do T-bill yields change?
A: Yields fluctuate daily based on market conditions and Federal Reserve monetary policy.