Do you need a loan payoff request form? Creating a payoff letter is essential to any loan or mortgage repayment process.Our free templates and this guide can help you get started. To request a payoff quote, please complete the payoff quote form. This form is intended for 3rd parties acting on behalf of Mr. Cooper customers. What Is a Letter of Explanation? A letter of explanation is a document that the lender may request to learn more about your specific financial situation. I want to pay off my mortgage loan, so I called the servicer to ask how much it would cost. Alternatively, your lender may have a form you must fill out. Mortgage payoff letter request Doc Template pdfFiller.