Some franchisors may tell you how much you can earn if you invest in their franchise system or how current franchisees in their system are performing. Be careful. The FTC requires that franchisors who make such claims provide you with written substantiation. This is explained in more detail in the section "Investigating Franchise Offers." Make sure you ask for and obtain written substantiation for any income projections, or income or profit claims. If the franchisor does not have the required substantiation, or refuses to provide it to you, consider its claims to be suspect.