I appreciate you for bringing this to our attention.
Based on the information available on the QuickBooks payment rates, the fee for using the QuickBooks card reader should be 2.5%. If you're being charged 4.25%, I recommend using our Look Up Charge Tool. This will help you see the complete details of what the charges are for.
Something else to consider is to get in touch with our Live Support Team. They can take a closer look and help make sure everything’s on track.