You can require ACH payments and block CCs both with our invoicing tools and over our API. You can also have the customer pay the service fee, rather than eat i

You can require ACH payments and block CCs both with our invoicing tools and over our API. You can also have the customer pay the service fee, rather than eat it yourself. The only thing you can't do is split the cost depending on the payment method (i.e. I'll eat the 1% ACH fee but if you want to pay by CC you're going to pay the extra 1.9%), though we've had some of our API customers ask for that kind of thing and are considering it.