Multiply your principal balance by your interest rate. Divide your answer by 365 days (366 days in a leap year) to find your daily interest accrual or your per diem. 3. Multiply this amount by the number of calendar days that have elapsed since the date of your last payment to find your interest due.
How do I request a payoff letter? To get a payoff letter, ask your lender for an official payoff statement. Call or write to customer service or make the request online. While logged into your account, look for options to request or calculate a payoff amount, and provide details such as your desired payoff date.
The payoff function is a function u i : S 1 × S 2 × ⋯ S m → R .