Visit the California DMV's website and download a bill of sale. Learn about bills of sale in California for animals, vehicles, firearms, and more.You'd need the bill-of-sale and title. You also need to get a smog certificate, insurance and pay sales tax. Complete the new owner information on the back of the certificate and sign it. Bill(s) of sale, if needed to establish a complete chain of ownership. Learn about Florida Bill of Sale requirements. Get forms and templates to document the sale of items such as cars, boats, horses, firearms, and more. Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. In some states, the department of motor vehicles or highway safety will have bill of sale templates for you to download.