Remember to include the loan account number in the letter to ensure proper identification. A payoff letter provides instructions on how to pay off a loan with a lump sum before the loan term ends.Learn how payoff letters work. Create a Loan Payoff Letter online and download it as a PDF or Word document. Customize and print a blank Loan Payoff Letter for free. Fill out the form below to request a loan payoff letter. If you have any questions, please contact Loan Customer Service at 1-800-677-6272 option 5, option 2. 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. AmeriHome partners with multiple Servicers to service our loans.