The Reserve Bank of India (RBI) was established in 1935 according to the Reserve Bank of India Act of 1934. It is India's central bank located in Mumbai, originally founded in Kolkata. RBI controls currency supply and regulates banking in India, and plays an important role in the government's development strategies. As central bank, RBI's key functions include being the currency issuer, banker to the government and commercial banks, foreign exchange manager, credit controller, and performing non-monetary roles like data collection, regulation, and promotion of development.