By Region

• Enable – Enable/Disable extra fees based on region.

• Based On – Select whether to charge extra fee for region on the shipping address or billing address.

• Countries – Select regions to charge extra fee.

• Payment Extra Fee Type – Select the type of extra fee for region from fixed, percentage, combined, or fixed minimum.

• Payment Cost – Set the extra fee amount depending on the type selected in the above field.

• Region Extra Fee Title – Set custom title for extra fee based on region.

• Apply Group Filter – Set Yes if you want to charge extra fee based on region only from specific customer groups.

• Only for Customer Groups – Select the customer groups for region extra fee.

You can see that the extra fee based on region is applied in the front end as per your backend settings.