The Reserve Bank of India (RBI) was established in 1935 and nationalized in 1949. It serves as the central bank, monetary authority, and regulator of the banking system in India. The RBI's key functions include monetary policy, regulating banks, managing foreign exchange, issuing currency, acting as a banker to the government and banks, and facilitating development initiatives. Dr. Urjit Patel currently serves as the Governor of RBI.