This is an example of a payoff letter used in a syndicated loan transaction. This payoff letter (including the defined terms such as Lenders,.A 10 day payoff is crucial to getting your old loans paid off during a refinance. Learn how it works from start to finish. A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. A payoff agreement is an informal contract in which a creditor agrees to accept the balance of a debt owed as full payment.