T bills or Treasury bills are short-term government debt securities issued by the U.S. Treasury with maturities less than 1 year. Investing in T bills is considered risk-free given they are backed by the U.S. government. There are a few key factors that determine the return on T bill investments like purchase price, interest rates and holding period. This article provides details on calculating T bill investment returns using online calculators or Excel formulas.

Factors impacting T bill investment returns
详细阐述影响T bill投资回报的关键因素,如购买价格、利率、持有期限等。可以举例说明或提供计算公式。
Using online T bill investment calculators
Introduce some popular online T bill investment return calculators, explain the input parameters and demonstrate with examples on how to use them to estimate returns.
Calculating returns using Excel formulas
Provide step-by-step instructions on calculating T bill investment returns in Excel using formulas like RATE, YIELD etc. Show examples of setting up the formulas and interpreting the results.
In summary, T bill returns depend on factors like purchase price, interest rates and holding period. Investors can conveniently estimate returns using online calculators or Excel formulas.