Union Bank of India, commonly referred to as Union Bank or UBI, is an Indian government-owned bank with 120+ million customers and a total business of US$106 billion. After the amalgamation with Corporation Bank and Andhra Bank, which came into effect on 1 April 2020, the amalgamated entity became the fifth largest PSU bank in terms of branch network with around 9500 branches. Four of these are located overseas in Hong Kong, Dubai, Antwerp, and Sydney. UBI also has representative offices at Shanghai, Beijing and Abu Dhabi.

HDFC Bank Limited is an Indian banking and financial services company headquartered in the city of Mumbai, India. It is India's largest private sector bank by assets and world's 10th largest bank by market capitalisation as of April 2021. It is the third largest company by market capitalisation of $122.50 billion on the Indian stock exchanges.[13] It is also the fifteenth largest employer in India with nearly 120,000 employees.

State Bank of India (SBI) is an Indian multinational public sector bank and financial services statutory body headquartered in Mumbai, Maharashtra. SBI is the 43rd largest bank in the world and ranked 221st in the Fortune Global 500 list of the world's biggest corporations of 2020, being the only Indian bank on the list.[6] It is a public sector bank and the largest bank in India with a 23% market share by assets and a 25% share of the total loan and deposits market.[7] It is also the fifth largest employer in India with nearly 250,000 employees.

Punjab National Bank, abbreviated as PNB, is an Indian nationalised bank. Headquartered at New Delhi, Delhi, India, it is under the ownership of the Ministry of Finance, government of India. The bank was founded in May 1894 and is the second largest government-owned bank in India, both in terms of its business volumes and its network. The bank has over 180 million customers, 12,248 branches, and 13,000+ ATMs.

Indian Bank is a major nationalised bank. It is under the ownership of the Ministry of Finance, Government of India. It was established in 1907 and is headquartered in Chennai, India. It 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 per the announcement made by the Indian Finance Minister Nirmala Sitharaman on 30 August 2019, Allahabad Bank merged from 1 April 2020, making it the seventh largest bank in the country.

Central Bank of India (CBI) is an Indian nationalised bank. It is under the ownership of Ministry of Finance , Government of India and is one of the oldest and largest nationalised commercial banks in India. It is based in Mumbai, the financial capital of India and capital city of state of Maharashtra. Despite its name it is not the central bank of India; the Indian central bank is the Reserve Bank of India.

Bank of Baroda (BOB or BoB) is an Indian nationalized banking and financial services company headquartered in the city of Vadodara, India. It is the fourth largest nationalised bank in India, with 132 million customers, a total business of US$218 billion, and a global presence of 100 overseas offices. Based on 2019 data, it is ranked 1145 on Forbes Global 2000 list. Bank of Baroda announced in May 2019 that it would either close or rationalise 800–900 branches to increase operational efficiency and reduce duplication post-merger.