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 to fill out the Payoff Request Letter Templates? Get access to direct deposit forms, automatic bill payment forms, and loan management from BMO. Use a standard business letter format with your name, contact information, and the date at the top. The FDIC may be able to assist you in obtaining a lien release if the request is for a customer of a failed bank that was placed into FDIC receivership. 1. Enter the lender's name and loan account number. Use a standard business letter format with your name, contact information, and the date at the top. Complete and return the form to the Harris Central Appraisal District (HCAD). Call. 1-888-340-2265. from 7 a.m.