Sage 50 ages vendor and customer invoices by the due date or the invoice date.
For this reason, many people choose to age accounts payable by due date and accounts receivable by invoice date. The way you age invoices is established in the Default Information for vendors and customers (accessed through the Maintain menu).
You can establish up to four aging periods. The leftmost column on the report contains balances due for the most recent (or least overdue) invoices, while the rightmost column contains balances due for the oldest (or most overdue).
You set the range of days for each of these columns in the Default Information for vendors and customers. This range is either the number of days beyond the invoice date or the number of days beyond the due date, depending on how you choose to age. For example, if you were aging by Due Date, you might enter 0 for the first aging column, to indicate that you wanted all invoices not yet overdue to appear in the first column. You might then enter 15 on the second line to have all invoices which are up to 15 days overdue (and not in the first column) appear in the second column. You might then enter 30 on the third line, to indicate that all invoices less than 30 days overdue but more than 15 days overdue appear in the third column. You can enter 999 for the # of days in the fourth column, to indicate that all invoices not listed in the first three columns will appear in the fourth.
You can also define a heading for the columns that appear on the aging reports: Current, Over 30, and so on.