Commonwealth Bank of Australia (CBA or CommBank) is a multinational universal bank and the largest financial institution in Australia. As one of the "Big Four" Australian banks alongside NAB, ANZ, and Westpac, CommBank serves over 17 million retail, business, and institutional customers across Australia. The bank is the largest company listed on the Australian Securities Exchange and operates with a market capitalization exceeding $300 billion as of 2025.
CommBank offers comprehensive financial services including retail banking, business banking, institutional banking, wealth management, insurance, and investment services. The bank has grown from its government origins to become a technology leader in digital banking innovation.
