In sales involving seller financing, the purchase agreement will contain the specific financing arrangement between the buyer and seller. Seller financing: Under this contract, the seller consents to get paid in installments, frequently with interest.Sellers may offer to "carry back" financing as part of the sale as an alternate investment to owning real estate outright. A business purchase agreement is a legal contract specifying terms for buying or selling a business, including conditions and obligations. Set up the payment schedule for your sellerfinanced loan. As San Diego attorneys and licensed real estate brokers, we have the knowledge and expertise to help you with all aspects of real estate purchase and ownership. Compare handpicked and vetted Seller Financing Contract lawyers to save your money and time. Seller financing allows business buyers and sellers to remove the middleman (bankers) and work together directly to come up with a funding deal.