Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started.How to fill out the Payoff Request Letter Templates? 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. 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. Include the loan or mortgage number. Customize and Download this "Sample Pay Off Loan Letter". Only one proposed application per grant.