tax exempt items
I have the same issue, I have an page on my site where people can donate. I have to make the donations tax exempt. I copied the calculation you provided in my cart object, but I am having a problem setting up the trigger and the calculation on the settings page of the Merchandising Rule. Could you tell me exactly how to set the trigger and the calculation. My tax exempt items are category 1 and taxable items are category 2. Any help would be greatly appreciated.