The Indian money market refers to the market for short-term highly liquid debt instruments with maturities of less than one year. Key instruments traded in the money market include treasury bills (issued by the RBI), commercial paper, certificates of deposit, and call money. The Reserve Bank of India plays an important role in regulating liquidity and interest rates in the money market through tools like open market operations, cash reserve ratio requirements and repo rates. Treasury bills are the most important money market instrument issued in maturities of 91 days, 182 days and 364 days through regular auctions.