Use Fill to complete blank online TEXAS REAL ESTATE CONTRACTS pdf forms for free. 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. Paid interest over 10 years:"Int_Paid". What you should know. Searching for a fillable Mortgage Loan Payoff Letter Template? Use our easy editor for PDF files and fill this form out quickly. Let's say that in the previous example Joe is closing his refinance on October 10th and his payoff has October's 10 days of interest added to it. Interest rate reference rate in the loan agreement which may impact the amount of interest the borrower pays on the loans (for example,. LIBOR). Payoff of first mortgage loan. 103.