South Carolina law requires that you register your newly purchased vehicle within 45 days of the purchase date. A bill of sale form can only be obtained at a local DMV office.A generic bill of sale will NOT be accepted. Use our templates to draft South Carolina bills of sale. A South Carolina bill of sale is a document that proves that ownership of personal property has transferred from seller to buyer. A South Carolina motor vehicle bill of sale is a form used to document the transfer of ownership of a motor vehicle in South Carolina. How do I fill this out? To fill out the South Carolina Bill of Sale Affidavit, you need to gather detailed information about the seller, buyer, and vehicle. Create a South Carolina bill of sale form to complete the sale and ownership transfer of a car, boat, trailer, motorcycle, etc.