Hey there, yarbroughinspect.
Yes, there's a payment fee when the customer sends the payment via QuickBooks Online. All rates and fees are in US dollars and are subject to change under the terms of the Intuit Merchant Agreement.
To view and understand the exact rates and fees that have been applied to your transactions, check the following articles below:
If you require more information about payment fees or anything in QuickBooks, please let me know. I'll be around to help. You have a great rest of your day!