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.Did you lend someone money, but they have not paid you back? In this article, we go over how to write a demand letter. Do you need a loan payoff request form? 504. Payoff of first mortgage loan. 103. Settlement charges to borrower (line 1400). 403. 108. Assessments. 408. Include the payment amount. Include the date you plan to make the payment. If you are refinancing, the amount of your refinance loan should be the payoff of your current mortgage plus any fees.