The due date of the invoice or statement charge. For invoices, QuickBooks enters the date when you record the invoice. For statement charges, QuickBooks enters the date when you print the statement (until then, the field is blank).
To calculate the date, QuickBooks uses the payment terms you specified on the Additional Info tab of the customer's record and the date of the invoice or the statement. (For statement charges, this is the date you entered into the Statement Date field when you printed the statement.)
If the payment terms are “Net 30” (balance due in 30 days) and the date of the invoice or statement is December 15th, QuickBooks enters January 14th as the due date.
QuickBooks replaces the due date with the word “Paid.” When you scroll the register, you can see at which invoices and statement charges are paid.