Speed up the sale process - have the agreements in place early. A sales agreement is used to describe and track the exact details of quantity and cost of purchasing or selling goods, services, or real estate.Identify the parties involved in the transaction. 2. Is the Seller a resident of the Republic of South Africa for. Income Tax purposes? Create, commit to, and manage your agreements all in one platform with Docusign IAM. Electronically sign for free. This business sale agreement template can be used as a binding document to govern the sale of a business to a new owner. A sale of business agreement is a legally binding contract that governs the transfer of ownership of a business from the seller to the buyer.