This report delves into the realm of professional ethics within the accounting and finance sector, using Morgan Stanley as a case study. It explores the fundamental principles of ethical behavior, including integrity, objectivity, professional competence, confidentiality, and professional conduct. The report examines the legal, regulatory, and ethical requirements that govern the financial industry, highlighting the role of professional bodies in upholding these standards. It discusses the importance of adhering to codes of conduct, managing risks of improper practices, and staying updated on industry changes. The report also covers ethical considerations when interacting with clients, suppliers, and colleagues, emphasizing objectivity, professional distance, and adherence to organizational values. It addresses the handling of client monies, situations requiring confidential information disclosure, and the importance of working within one's professional expertise. Furthermore, the report identifies reporting procedures for illegal acts and unethical behavior, strategies for preventing conflicts, and the significance of an ethical approach to sustainability within the finance sector. The conclusion emphasizes the critical role of ethics in maintaining trust, ensuring responsible financial practices, and promoting long-term sustainability within the industry.