Allows Ubercart tax rates to be assigned to taxonomy terms.
After installing this module, you will be able to select taxonomy terms from the tax rate edit screen to apply product tax to.
Please note that line item tax will show up separately on the order. So you may want to create separate tax rates to provide appropriate titles (e.g. Shipping tax, Discount tax adjustment etc).
Related discussion: http://www.ubercart.org/issue/15097/conditionally_tax_products_based_tax...