This economics report provides a comprehensive analysis of the Australian banking sector, examining its structure, market dynamics, and the influence of the Royal Commission into the misconduct in the Banking, Superannuation and Financial Service industry. The report begins with an introduction to the banking sector, highlighting its importance and the dominance of the "big four" banks (CBA, Westpac, NAB, and ANZ). It delves into the market structure, characterized by an oligopoly, and the high concentration of market share. A significant portion of the report focuses on the Royal Commission, its findings regarding misconduct, and its impact on the banking industry, including regulatory changes, increased costs, and the potential for a credit crunch. The report also explores the impact on the Australian economy, including consumer confidence and economic growth, and discusses government policies in response to the Royal Commission. The conclusion summarizes the key aspects of the banking sector and the implications of the Royal Commission. The report includes references to academic sources, providing a well-researched and detailed overview of the subject.