Thank you for taking the time to express your concerns in the Community, @ddi quinn.
I find this function relevant to your company. I'm here to assist you in sending feedback to enable this feature in QuickBooks Desktop.
Automated charging fee isn't available in QuickBooks.The only way to add them is to enter them manually into their invoice. However, we can submit feedback to our product developers.
To do so, follow these steps:
1. Select Help from the menu.
2. Choose Send Feedback Online.
3. Click the Product Suggestion.
4. Fill up the following details and hit Submit button.
I've included this article to help you manage the growth of your business with QBO: QuickBooks Help Articles. It covers account management, bank transactions, vendors, and inventory. We can view additional options by clicking the + More topics button.
Let us know if you require any additional support. The Community is on your side. Have a wonderful day.