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.Send sample payoff letter for private mortgage via email, link, or fax. You can also download it, export it or print it out. This is an example of a payoff letter used in a syndicated loan transaction. This payoff letter (including the defined terms such as Lenders,. What is a payoff letter? A payoff letter is a written document from a seller's mortgage company stating the amount of money needed to pay the loan in full.