There is no doubt that ethics is important to businesses. Managers can enhance their business reputation and increase customer satisfaction by acting ethically. Interestingly, the concern of ethics goes beyond businesses’ practices to customers role in making an ethical purchasing decision. This phenomenon is known as ethical consumerism that show the way consumers view products and organizations based on their ethical concerns. The importance of studying ethics in the financial sector is emphasized in previous studies. The purpose of this chapter is to highlight the importance of implementing ethical practices by businesses that positively influence customers decision to choose their products or/and services. A case study of one of the leading Bahraini banks demonstrates the importance of implementing antimoney laundry (AML) on ethical consumerism. © 2020, IGI Global. All rights reserved.