Step 2: Format your letter​​ Next, include a paragraph that states your account number, address and phone number. 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. Do you need a loan payoff request form? 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. A 10 day payoff is crucial to getting your old loans paid off during a refinance. Learn how it works from start to finish. That out of the EPS formula we have to start all over again. Loan out their own money, and those that operate on investor funds.