Hello Robert,

Have partial payments been posted for these invoices? The Discount base for the invoice is based on the ‘Net amount’ or the ‘Total before tax’ for the Invoice. Your Company Profile settings determine which one is used.

The Invoice value you have shown is probably the ‘Net due’. If partial payments are being recorded, and you wish to show the discount base for the outstanding invoice, the Discount base on the totals page should be edited prior to posting the Invoice.