Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started.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. Quick Overview: Attached is the Application, Recommended Lender list, along with the Interest Packet which quickly overviews the program. Payoff letters aren't the only way to learn about your current loan balance. You can also talk to your lender and request a verbal payoff quote. A payoff letter provides instructions on how to pay off a loan with a lump sum before the loan term ends. Learn how payoff letters work.