Statement from us will be required. If loan has quotable per diem interest, then "Funds received after ______ will be.Of interest per day. It typically details the principal balance, interest due as of that date, per diem, any late fees, etc. By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. Searching for a fillable Mortgage Loan Payoff Letter Template? Use our easy editor for PDF files and fill this form out quickly. ContractsCounsel has assisted 37 clients with payoff agreements and maintains a network of 28 financial lawyers available daily. Per Diem Interest; Payoff Amount. So it must be interest being applied per day. Right?