This is a sample Florida mortgage payoff authorization form and should not be used or relied upon for any real estate transaction. Edit, sign, and share sample payoff letter for private mortgage online.No need to install software, just go to DocHub, and sign up instantly and for free. A mortgage lender might ask you to write a letter of explanation to better understand your finances when deciding whether to approve you for a loan. Gather your loan or mortgage documents. Why does the mortgage company care? Request proof of payment for your loan and follow up. You may receive a small refund since title companies often overpay to ensure everything is correct. Payoff of first mortgage loan. 103. In addition, the borrower may not be able to sell the property in the future if they cannot provide legal documentation that it was paid in full. FAQs.