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.We've put together this guide to help first-time homebuyers understand how escrowed property taxes are generally handled at closing in Texas. This is an example of a payoff letter used in a syndicated loan transaction. This payoff letter (including the defined terms such as Lenders,. When your mortgage is paid in full, your lender should return the mortgage promissory note you signed when you first took out the loan. I. Underwriting Topics. A. How to Use This Manual. 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.