Use this free customizable owner financing contract template to confirm financing between the owner selling a home and a buyer purchasing it. Set up the payment schedule for your sellerfinanced loan.Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. A seller financing addendum outlines the terms under which the seller of a property agrees to loan money to the buyer to purchase their property. Any other closing date requires the written mutual agreement of Seller and Buyer. Business Purchase-Sale Agreements.