This report investigates the impact of Corporate Social Responsibility (CSR) on the Commonwealth Bank. It begins with an introduction defining CSR and its significance, followed by an aim to understand its influence on the marketplace and specific objectives to evaluate effectiveness and analyze its importance. The literature review explores definitions of CSR and its relationship with globalization, ethical factors, and various challenges faced by organizations. The report examines the effectiveness of CSR initiatives, including stakeholder benefits, marketing, and financial performance. It also discusses the challenges faced by management, such as financial barriers and ethical considerations, and the importance of legal and ethical duties. The report highlights the Triple Line Theory and its relevance to the bank's responsibilities. Finally, the report concludes by emphasizing the role of CSR in enhancing brand image, promoting brand value, and contributing to sustainable development, and the role of financial sector and government policies. This research provides valuable insights into the impact of CSR on the Commonwealth Bank's performance and offers recommendations for improvement.