Adding sales tax to order form

How would you make the sales tax a percentage of the order total?  Eg I need to add 9% California sales tax on a multiple product order form?  Further complicating things, 2 of my products should not have tax added at all.  Thanks.

Hi,

Please refer also to this guide

1. -What-is-Special-Pricing

2. -How-To-Add-Options-In-The-Payment-Form

Base on your description on what you wanted to do, I think adding special pricing to the items with already a computed value of addition 9% tax should work.

Please take note that you must set the actual computed price already (orig price + (orig price * 9%)) -- as you cannot use a value in % unit.

Hope this help. Inform us if you need further assistance to this.

Thanks.