The Reserve Bank of India (RBI) performs several key functions: 1. As the country's central bank and monetary authority, the RBI formulates, implements, and monitors monetary policy to maintain price stability and ensure adequate credit flows. It uses various tools like interest rates, cash reserve ratios, and open market operations to target interest rates and influence the money supply. 2. The RBI issues and destroys currency notes unfit for circulation to effectively act as the sole issuer of India's paper currency. 3. As a banker to banks, the RBI serves as a bank for commercial banks by letting them deposit funds and handle their accounts.