Firms and representatives in the financial services industry occasionally encounter situations where a client’s vulnerability causes the client to make decisions that are contrary to his or her financial interests, needs or objectives or that leave him or her exposed to potential financial mistreatment. Because of the relationships they develop with their clients and the knowledge they acquire about clients’ financial needs or objectives over time, firms and representatives in the financial sector can play a key role in helping people who are in a vulnerable situation protect their financial well-being. They are instrumental in preventing and detecting financial mistreatment among consumers of financial services. Firms and representatives can also help clients experiencing financial mistreatment get the assistance they need. This guide proposes possible courses of action to protect vulnerable clients. Its purpose is to provide financial sector participants with guidance on the steps they can take to help protect clients’ financial well-being, prevent and detect financial mistreatment, and assist clients who are experiencing this type of mistreatment.