South Carolina law requires that you register your newly purchased vehicle within 45 days of the purchase date. Use our templates to draft South Carolina bills of sale.This form offers information regarding the seller, the buyer, the change of ownership, and the property being sold and purchased. It requires notarization. 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. Use an As-Is Bill of Sale to prove a buyer is purchasing something in its current and present condition without warranties from the seller.