Hi 7708 0013 0,

Currently, creating a product budget in QuickBooks Online is not available. You can only create a budget based on your accounting data and subdivide it by customer, class or location. 

To learn more about the Budget feature in QBO, you can refer to this article: Create budgets in QuickBooks Online.

As a workaround, you can export your budget report to Excel and then add a product/service column from there. 

Let me know if you have any other questions and I'd be glad to help. Have a great day!