It lays out each fee and dollar still due before you completely pay off your mortgage. Here's how it works.The payoff demand processing fee is paid in escrow. Please see more information in the Payoff Demand Instructions. Login using your username and password. 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. Once completed, note the SST number and come into our office to finish the process. It is a way of consolidating all of your debts into a single loan with one monthly payment. Student loan debt relief companies might say they will lower your monthly payment or get your loans forgiven, but they can leave you worse off.