Hello there, @john156.
Charging the customer's fee isn't possible with QuickBooks Merchant services. The fees are calculated as % of the invoice. However, you can contact the Merchant Services team to check for other options. I'll guide you how:
- Sign in to your QuickBooks Online account.
- Click Help (?) menu at the top right corner.
- Select Contact Us.
- Enter your concern, then select Let's talk.
- Choose a way to connect with us:
- Start a chat with a support expert.
- Get a callback from the next available expert.
To learn more how credit card processing fee works in QuickBooks, please check out these articles:
Please let me know if you have other concerns with QuickBooks. I'm here to help. Have a great day!