Sometimes you may be selling products where sales tax is not applicable, or you may want to charge a different tax rate for a particular item. With WP Shop Cart plugin, you can apply Product Specific Tax.
For example, you have five products, and you want to apply five different tax rates. When you create a new product or edit an existing product under the Tax tab, change Apply Tax to “Yes” and enter a value in the “Product Specific Tax” field and save the product.
The “Product Specific Tax” rate that you enter will be applied on that product only.
Once all the products have “Product Specific Tax” in place, go to the Tax menu and make sure “Product/Item Specific Tax” radio button is selected.