An accounts receivable purchase agreement is a legally binding contract that governs the purchase of accounts receivable between parties in a specific location. A receivables financing agreement is a type of financial transaction in which a business sells its accounts receivable (invoices) to a third party.This process includes sending invoices, following up on late payments, and offering payment plans if necessary. Ask about necessary permits or licenses you may need to demonstrate proof of an operational business. Part 3: Accounts receivable. 10. Does the debtor have any accounts receivable? An accounts receivable purchase agreement is a legally binding contract that governs the purchase of accounts receivable between parties in a specific location. Use this form when engaging in seller financing or when a contract for deed is necessary for transferring property. Sample Business Contracts.