Service Charges are calculated on Past Due Amounts. These are all amounts except for Month to Date and Future Amounts. Service Charges should be calculated before doing Statements and End of Month Roll. The Service Charge is only calculated on the Past Due amount less any past Service Charges. The Past Due amount less Service Charges is known as the Calc Base.

Only customers that do not have an <N> in "Service Charge?" in "Customer Entry" (6.1.1 field 29) will be charged a service charge.

Invoices marked as Disputed in "Enter PO into Posted Invoice/Show Applied Items" (6.3.5),  will appear with an asterisk (*) on reports and statements. The Invoice is aged according to the Invoice Date and will still trigger Dunning Messages. Disputed Invoices are exempt from Service Charges.