A treasury bill is an instrument of short term borrowing by the Government of India Maturing in less than one year. They are also known as Zero Coupon Bonds issued by the RBI on behalf of the Central Government to meet its short term requirement of funds. ‘Treasury bills are issued in the form of a promissory note. They are highly liquid and have assured yield and negligible risk of default. They are issued at a price which is lower than their face value and repaid at par treasury bills are available for a minimum amount of Rs. 25,000.
For example: Suppose an investor purchases a 91 days Treasury bill with a face value of Rs. 1,00,000 for Rs. 96,000. By holding the bill until the maturity date, the investor receives Rs. 1,00,000. The difference of Rs. 4,000 between the proceeds received at maturity and the amount paid to purchase the bill represents the interest received by him.