We've noticed that the orders on our FoxtCart account don't quite calculate how we thought for orders so I'm checking if this is a bug or whether it's just a weird way they're totaled. See this screen cap
for example. The relevant values are
Tax - 12.5%
Shipping - $5 + 5%
Whether it's "(sub-total + $5) + 12.5%" or "(sub-total + 5%) +12.5%" or any other combination, the Tax doesn't seem to match the FoxyCart returned tax.