The Reserve Bank of India (RBI) was established in 1935 and nationalized in 1949. It regulates the country's banking system, currency, and credit. The RBI maintains monetary stability, a stable exchange rate, and balanced economic growth through its various departments that oversee currency, banking operations, supervision, policy, and more. Key roles of the RBI include issuing currency, acting as a bank to banks and the government, managing foreign exchange rates and credit, supervising banks, and promoting development of the financial system.