Bank of Bengal
- June 2, 1806: The Bank of Calcutta established.
- January 2, 1809: redesigned as Bank of Bengal
- April 15, 1840: Bank of Bombay established.
- July 1, 1843: Bank of Madras established.
- 1861: Paper Currency Act passed
- January 27, 1921: all 3 banks amalgamated to form Imperial Bank of India
- July 1, 1955: State Bank of India formed