Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started.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. Use a standard business letter format with your name, contact information, and the date at the top. A 10 day payoff is crucial to getting your old loans paid off during a refinance. Learn how it works from start to finish. 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. Use WalletHub's credit card payoff calculator to calculate how long it will take to pay off a balance and how much it will cost.