In consideration of full payment of the promissory note dated. A Payoff Letter memorializes a debtor and lender's agreement regarding a debt obligation's early payment and termination.A promissory note is a written agreement regarding borrowed money. 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. These templates simplify the process, providing a structured format that covers all necessary details, from repayment terms to interest rates. Note, Security and Guaranties: Release (6-381-2932)). This is an example of a payoff letter used in a syndicated loan transaction. Card issuers often indicate a credit limit in a cover letter sent with an application or solicitation.