I know how efficient it is for your business to have this feature, Dduss. 

The option to put the credit card fees is not yet available in QuickBooks Online. For now, I recommend sending feedback directly to our engineers so that it'll be included in the upcoming updates.

Here's how:

1. Go to the Gear icon.
2. Select Feedback.
3. Enter a brief description of your product suggestion.
4. Click Next to submit feedback.

In addition, feel free to visit these articles below for more information about funding time for QuickBooks Payments:

• Common questions about payment deposits in QuickBooks Online
• Find out when QuickBooks Payments deposits customer payments

I'll keep an eye out for your reply. If you have other questions about adding credit card fees or any QuickBooks-related concerns, please don't hesitate to include them in the comments. We're here to assist you 24/7.