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. Please email this information to as soon as possible. (Check one.) ☐ This request is being made prior to the end of the three year Compliance Period. Depending on your lender, you may have to sign in to an online account, call a helpline, or send a formal letter to start the request process. A Satisfaction of Security Instrument is a document that shows an individual has paid a deed of trust or a mortgage in full. A payoff letter shows the remaining balance on your mortgage, including fees, interest, etc. Learn more about what a payoff quote is and how to request one.