As a much requested feature, we're pleased to announce that it's now possible to specify a "credit card fee" for any given invoice as a percentage of the original invoice total.
To add the fee, navigate to the invoice, click the edit/pencil icon as though you were entering a shipping charge. Enter the card fee as a percentage to add to the invoice:
After saving, you will see the additional card fee on the invoice:
If a customer always pays by card and you always charge a card payment fee, you can specify a default card fee percentage for all new invoices for that customer. Just edit the customer details to add the relevant default percentage fee. The fee will be added automatically to new invoices for that customer.
You can read more about card fees in our online guide.