The Reserve Bank of India (RBI) is the central bank of India established in 1935. It regulates banking, manages currency and monetary policy in India. Key functions of RBI include issuing currency, acting as banker and lender of last resort to commercial banks, managing foreign exchange reserves, and regulating banking sectors through various policy tools like repo rate, cash reserve ratio, and statutory liquidity ratio. RBI aims to maintain price stability and adequate credit flow in the economy.