A payment plan agreement outlines an installment plan to repay an outstanding balance over a specified time frame. This document provides a sample payoff request letter that can be used as a guide.Do you need a loan payoff request form? You will find articles on the internet about alternatives to payoff letters. Payoff of first mortgage loan. 103. It's a statement that breaks down the payoff figure for the loan assuming no intervening payments, on a future (specified) date. Lenders typically use their own forms of payoff letter (see Practice. Privacy Opt Out Form. CONTACT US. Monday–Saturday. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan.