You can setup payment surcharges on a specific payment method to charge customers a % amount on top of the grand total of the order.
From the Neto dashboard, navigate to Setup & Tools > Payment Methods and select the payment method you want to edit.
Scroll down to the Configuration section and here you will be able to add your Surcharge.
Click Save & Close.
Last Modified: 23/12/2016
Neto Version: 6.6