History of banks
The first bank to be established in Australia was the Bank of New South Wales, which was established in Sydney in 1817, with Edward Smith Hall as its cashier and secretary. During the 19th and early 20th century, the Bank opened branches throughout Australia and Oceania: at Moreton Bay (Brisbane) in 1850, then in Victoria (1851), New Zealand (1861), South Australia (1877), Western Australia (1883), Fiji (1901), Papua New Guinea (1910) and Tasmania (1910).
The top four banking groups in Australia by market capitalisation are Commonwealth Bank, Westpac Banking Corporation, Australia and New Zealand Banking Group and National Australia Bank.
For more information see Wikipedia.