By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. Please accept this as my authorization to issue a payoff statement to.Through an effective date of . Please provide payoff information for the above referenced mortgage. Also, please provide loan number and per diem interest. The mortgage payoff calculator helps you find out. The document provides a payoff quote for a reverse mortgage loan. Section 26227. S26C. The homeowner sets up a homeequity line of credit (HELOC), borrowing against the value of his property.