By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. The release is what removes the lien, which in your case isn't there.It typically details the principal balance, interest due as of that date, per diem, any late fees, etc. What is a Payoff Agreement? A payoff agreement is an informal contract in which a creditor agrees to accept the balance of a debt owed as full payment. Please include a per diem amount in the statement. Please email this information to as soon as possible. The statement includes information and formulas to calculate on a per diem basis the payoff amount after the date it is issued. Please accept this as my authorization to issue a payoff statement to. Through an effective date of .