A resale certificate (also known as a resale license, reseller’s permit, reseller’s license, and tax exemption certificate) is a tax exempt form that permits a business to purchase goods from a supplier that are intended to be resold without having to pay sales tax on them. It allows suppliers to know that you are legally allowed to purchase the goods without them having to charge you sales tax since you will be reselling the goods and collecting sales tax from the end user.