UBI was the result of the merger in 1950 of four Bengali banks: Comilla Banking Corporation (founded by Narendra Chandra Dutta in 1914 in what is now Bangladesh), Bengal Central Bank (founded by Sri J.C. Das in 1918), Comilla Union Bank (founded by Shri Indu Bhusan Dutta (IAS), in 1922) and Hooghly Bank (founded by Sri D.N. Mukherjeee 1932). All four had suffered runs in December 1983 after the failure of the Nath Bank. The Reserve Bank of India assisted the banks in amalgamating to form United Bank of India.