Well, my products are all set as "Taxable Goods". It is a shopping cart for my small winery and when they place how many of a particular type of wine they want and stick to JUST that wine, taxes are calculated perfectly for my zone which is for Placer County and is 7.5%.
BUT...when they select lower priced wine after they've selected the higher priced wine, the tax is calculated anew for the lesser amount of wine and not added together.
I have posted a screenshot of how my tax rate is configured.
Thank you.