When creating an order fee in Magical Product Fees, you can choose to apply the fee to either the order subtotal or the order total.
Order subtotal:
This option is available on all plans. The fee is calculated based on the subtotal before any discounts, taxes, or shipping.
Order total:
This option is only available on the Growth Plan with Shopify Plus. The fee is calculated based on the total after discounts, taxes, and shipping.
To set this up, create a new fee, choose Order as the type, then select either Subtotal or Total under the conditions section. If you do not see the "Order Total" option, your store may not be on Shopify Plus.