I am attempting to calculate tax by the state which the user selects from the shipping address using your PayPal Pro add-on.
The information here http://www.gravityhelp.com/documentation/page/Gravity_Forms_Pricing:_Adding_Tax was a little vague because the merge tags may not work so well when you have multi choices items that are separate options. Or I could just have the formula incorrect.
Is this possible? I only want to charge tax when someone's shipping address is in California.