I have been using Sage 50 for a year...prior to that it was Simply and before that...Bedford...

I cannot get my GST added to work in my vendor invoices.

I have chosen a tax code of 'G' and a rate of 5% (Alberta vendors only).  In Simply...when I chose this (instead of GST included)...the GST box below the subtotal would populate with the 5%.

This is what I want Sage to do as well but I cannot figure out how to get this box to work? 

What am I doing wrong?