Under the Loan Information section, you will find a payoff request option that will take you to our payoff request form. "Payoff amount" is generally higher than the remaining balance on the home.The mortgage payoff calculator helps you find out. 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. How do I calculate a mortgage payoff? 1. Understand why your mortgage payoff amount does not equal your current balance. Welcome to Fay Servicing, your trusted Financial Services Company. Some lenders may make their tax forms available online, in which case you should check your account to download. (installment) in order to qualify for the Mortgage, payoff must be documented in the Mortgage file.