Name of Mortgage Servicer. It lays out each fee and dollar still due before you completely pay off your mortgage.Here's how it works. Filling out this form is straightforward. The form must be received at least 21 days before your next scheduled loan payment due date. Complete and return the form to the Harris Central Appraisal District (HCAD). 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. You may qualify for forgiveness of the remaining balance due on your eligible federal student loans based on your employment in a public service job. This form will be included with your December statement.