It serves over 100 million customers with 40,187 employees, 5,856 branches with 4,937 ATMs and Cash deposit machines.

In the last quarter of 1906, Madras (now Chennai) was hit by the worst financial crisis the city was ever to suffer.

[2] Of the three best-known British commercial names in 19th-century Madras, one crashed; a second had to be resurrected by a distress sale; and the third had to be bailed out by a benevolent benefactor.

Sri V. Krishnaswamy Iyer and Mr. Ramasamy Chettiar were one of the first directors of Indian Bank.

Then in late 1941 IB opened branches in Singapore, Kuala Lumpur, Ipoh, and Penang.

The exigencies of war forced IB to close its Singapore and Malayan branches with months.

In 1973, the three established United Asian Bank Berhad to amalgamate and take over their Malaysian operations.

[5] In 1983, ethnic sectarian violence in the form of anti-Tamil riots resulted in the burning of Indian Overseas Bank's branch in Colombo.

[8] A multi-crore scam was exposed in 1992, when then chairman M. Gopalakrishnan lent ₹13 billion to small corporates and exporters from the south, which the borrowers never repaid.

[9] Bank of Baroda bought out its partners in IUB International Finance in Hong Kong in 1998.

In June 2015, business of the bank crossed the milestone target of ₹3 lakh crore (US$35 billion).

The proposed merger would create the seventh largest public sector bank in the country with assets of ₹8.08 lakh crore (US$93 billion).

It was appointed as the lead bank for nine districts in the States of Tamil Nadu, Andhra Pradesh and Kerala and the Union Territory of Pondicherry.