The City of San José processes requests for payoff demands of existing homebuyer and home repair loans, and affordability restrictions (i.e. A payoff agreement is an informal contract in which a creditor agrees to accept the balance of a debt owed as full payment.Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started. The release is what removes the lien, which in your case isn't there. A letter of explanation is your chance to answer any questions a lender might have about your loan application.