Tax zones and rules are pretty straight forward in Magento but I am struggling with a final detail.
I have all the tax set up by province in Canada. That's working well. Only one category of product is partially exempt tax in 3 provinces. It's easy to see how to set up a product tax class, but it's not straight forward to figure out how to exempt tax based on a couple regions. I'm sure there is something simple I am missing - I don't want the product category to be tax exempt, I only want part of the tax (pst) to be exempt in 3 provinces, but apply in other provinces.