Payoff Instructions: The letter provides detailed instructions on how to make the payoff, including where to send payments and any required documentation. 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. We request you furnish our office a written payoff with per diem, please fax the payoff as soon as possible to (352)282-4895. This guide will help you learn mortgage math, allowing you to confidently calculate how much you need to pay off your mortgage. This form is furnished to give you a statement of actual settlement costs. This is a sample Florida mortgage payoff authorization form and should not be used or relied upon for any real estate transaction. A payoff letter or payoff statement can take two major forms in real estate. Call or write to customer service or make the request online. Looking to pay off an auto loan early?