Additional options for how products are taxed. To apply taxes to products, go to Product Management > Product Taxes.
Round Tax Per Product -- When enabled, tax rounding calculations are applied per-product. When Disabled (default), tax rounding calculations are applied per-order.
Calculate Tax Using Discounted Price -- When enabled, product discounts also discount the tax. When disabled (default), full tax amount is applied to discounted products. NOTE: Order discounts always charge the full amount of tax.