Markup Different On An Invoice

I am entering an individual Product Code on an Invoice and I have noticed that the Markup is not the same on the line as it is on the bottom details, why is this?

Solution

Is your system set up with the Selling Prices being Inclusive of GST? If it is, then the Line in which the Product Code appears the Mark Up will include GST.  However, the totals at the bottom of the invoice will all show as being GST Exclusive. 

This will also show on the Profit/Margin button if selected for the Saved or Posted Invoice.