Answer : Interior designers make money by doing contract work for clients, and by consulting with one off clients about their interior needs. To do either type of work they must be registered in most states. At this time, nine states require that an interior designer has a bachelor's degree in Interior Design before beginning the process of licensure, and eight states just need to have passed a state approved exam and show four years' experience in order to become licensed. Fourteen states and the District of Columbia require only two years of study or experience when licensing for these professions, which is why it's often advised to at least get enough education so you can do something else if your interest lies elsewhere.