Indian Bank is an Indian nationalised financial services and banking company under the ownership of the Ministry of Finance of the government of India of the government of India. Established in 1907 and headquartered in Chennai, India, the bank serves over 100 million customers with 41,620 employees, 6,004 branches with 5,428 ATMs and cash deposit machines and is one of the top performing public sector banks in India. As of 31 March 2021, the total business of the Indian Bank was ₹9.3 lakh crore (US$120 billion). The bank's information systems and security processes are certified with ISO27001:2013 standard and is among the very few banks with the certification worldwide.[citation needed] It has overseas branches in Colombo and Singapore including a Foreign Currency Banking Unit at Colombo and Jaffna. It has 227 overseas correspondent banks in 75 countries. Since 1978, the government of India is the majority shareholder of the bank. Post merger with Allahabad Bank in April 2020, Indian Bank became the seventh largest bank in the country.