Established in 1904, City Union Bank is one of the largest old private sector banks in Tamil Nadu, focusing on lending to traders and small enterprises. With a strong network of 496 computerized branches and 1292+ ATMs across India, the bank operates through four segments: Corporate banking, Treasury, Retail Banking, and Other Banking Operations. Retail Banking is the bank's largest revenue contributor, offering services such as savings and current accounts, deposits, credit, loans, and insurance. In 2006, Larsen & Toubro acquired a 10% stake in the bank.