Commercial paper is an unsecured short-term promissory note issued at a discount by creditworthy corporations and financial institutions. It was introduced in India in 1990 on the suggestion of a working group and became popular globally in the 1980s. Key features include maturities between 7 days to 1 year, a minimum denomination of Rs. 5 lakhs, and being issued through private placements. Eligible investors include Indian residents, NRIs, and other financial entities. An issuing and paying agent facilitates issuance and payments to commercial paper holders on behalf of the issuer.