Add card percentage onto invoice

Hi, I would like to charge my customers the 2% or so that gocardless and stripe charge when using their services, but when setup with those payment options my customers don’t get charged anything, and there is no option to charge them. I would disable all payment options and get them to phone through but its then a case of modifying the invoices to add card percentages which then makes it a lot of hard work. Any ideas?

I moved a post to an existing topic: Passing on card handling charges