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. The payoff demand processing fee is paid in escrow. Please see more information in the Payoff Demand Instructions. After you pay off your mortgage, your lender should also return the original note to you. Create a Loan Payoff Letter online and download it as a PDF or Word document. Customize and print a blank Loan Payoff Letter for free. The payoff demand processing fee is paid in escrow.