BUT - some orders DO calculate correctly:


Sub-Total: $799.00
Credit Card / PayPal Fee: $11.98
Fast Flat Rate (Overnight Courier Bag / Express Post Bag - Best Way): $19.95
GST 10%: $75.54
Total: $830.93

Here is an order where the GST/Tax is NOT correct:


Sub-Total: $80.00
Credit Card / PayPal Fee: $1.09
Free Shipping: $0.00
GST 10%: $7.27
Total: $81.09

Also the percentages are not calculating correctly in the second example - 1.5% of $80 should be $1.20 not $1.09 - In the first example, the percentage is correct ie. $10.98

Settings in the CC/PayPal are:

Fee
1.3636%
Tax Class - Taxable Goods

Goal is to have 1.5% applied to item and shipping. The 1.5% is taxable.

The only difference I can see is that it's a) a different product b) there is shipping involved.