A payoff letter provides instructions on how to pay off a loan with a lump sum before the loan term ends. Learn how payoff letters work.A Loan Payoff Letter Request form is a crucial document for anyone looking to understand the full amount they need to pay to clear their loan balance. It includes a detailed breakdown of the principal balance, accrued interest, fees, and any other outstanding charges. 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. Become a member and become a part of our community. Gain financial confidence for today, tomorrow and the future. Connect with a loan officer in your area for fall-out funds and other Florida Housing down payment and closing cost assistance programs. SDCCU financial representatives are available to help.