Seller shall fully complete and execute, as taxpayer, prior to or immediately upon the execution of this Agreement, a form 8821 (Rev. When should contract AR be entered into the Contract AR system?Contract AR should be entered when the revenue has been earned but not collected. Accounts receivable are cash amounts that clients owe your company. The goods or services have been delivered and the invoice sent. To get started, businesses fill out an application and go through our approval process. An accounts receivable purchase agreement is a legally binding contract that governs the purchase of accounts receivable between parties in a specific location. Ace the art of account receivable collection calls with effective scripts. Perfect debt collection calls with expert script examples. Robert Half works to put you in the best position to succeed.