Banking in Australia

Banking in Australia is a central component of the country’s financial system and one of the most concentrated banking sectors in the world. As of 2025 the sector contributes 7.5% of GDP and employs 450,000 people.

The industry is dominated by the “Big Four” banks; Commonwealth Bank, Westpac, Australia & New Zealand Bank, and National Australia Bank, which together hold the majority of deposits and lending. The sector is regulated by the Reserve Bank of Australia (RBA), which manages monetary policy and financial stability, and the Australian Prudential Regulation Authority (APRA), which oversees prudential standards. Australian banks are noted for their profitability, systemic importance, and resilience, particularly during the global financial crisis of 2007–2008.

Banking in Australia has its origins in the early nineteenth century, when colonial banks were established to support trade, settlement, and pastoral expansion. The sector experienced rapid growth but also instability, culminating in the banking crisis of 1893, which led to widespread bank failures and restructuring. Through the twentieth century, the system was shaped by government intervention, wartime controls, and the establishment of the Commonwealth Bank as both a commercial and central bank. Post-war reforms and the creation of the RBA in 1959 marked the beginning of a modern regulatory framework.

From the 1980s, financial deregulation transformed the industry. The removal of interest rate controls, floating of the Australian dollar, and entry of foreign banks increased competition and innovation. At the same time, prudential regulation was strengthened to safeguard stability, with APRA created in 1998 to supervise banks, insurers, and superannuation funds. The sector has since embraced digital banking, electronic payments, and online services, making Australia one of the more technologically advanced banking markets.

Despite its strength, the industry has faced scrutiny over misconduct, consumer protection, and market concentration. The Royal Commission into Misconduct in the Banking, Superannuation and Financial Services Industry (2017–2019) exposed widespread failings and led to significant reforms. Australian banks continue to play a pivotal role in the Asia–Pacific region, balancing domestic stability with international expansion. The sector remains a subject of debate over competition, regulation, and its role in supporting sustainable economic growth.