This report provides an in-depth analysis of ethical issues and codes of conduct within the Australian banking sector. It examines two key case studies: the Commonwealth Bank's involvement in money laundering and terrorism financing allegations, and the National Australia Bank's bribery scandal. The report begins with an overview of the importance of ethical practices and codes of conduct in the banking industry. It then delves into the specifics of each case, outlining the violations and their implications. The cases are evaluated in terms of industry regulations and ethical guidelines. Furthermore, the report proposes strategies to mitigate these issues, including enhanced compliance measures, employee training, and improved risk management. The objective is to understand the nature of ethical violations, suggest positive outcomes, and provide a guideline for the banking industry to prevent future ethical breaches, ultimately safeguarding customer trust and financial integrity. The report compares the two cases to identify common themes and propose comprehensive solutions.