This report provides an in-depth analysis of the Australian banking industry, focusing on its economic aspects and market dynamics. It begins with an introduction to the major players and the oligopolistic nature of the market, highlighting the dominance of four major banks. The report then delves into the industry's background, discussing the evolving financial structure and the blurring lines between investment and retail banking. It examines the market structure, characterized by high concentration and entry barriers, leading to issues such as deadweight loss and the formation of cartels. The report further explores the industry's associated issues, including the impact of market concentration on economic efficiency, stability, and profitability, and the consequences of scandals revealed by the Royal Commission into Misconduct in the Banking, Superannuation and Financial Services Industry. It details the impact of these issues on the industry and the Australian economy, such as the decline in consumer confidence and aggregate demand. Finally, the report discusses government policies, including the Four Pillar policy and the role of the Royal Commission, and concludes with a summary of the key findings, emphasizing the concentration in the Australian banking industry, the impact of illegal activities, and the government's efforts to secure consumer interests. The report references various sources to support its analysis.