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? Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started. Using the Original Mortgage or a Certified Copy. Of Exhibitors Service Company in Allegheny County. Plaintiffs executed the mortgage and note at issue in 1982. (Compl. ¶ 31) Clarion Mortgage Company, a non-party to this suit, originated the loan. Letter to Oliver Granger, 26 Jan. 1841.