Expense Category Tables Overview
You establish billing expense category tables to group or consolidate expense accounts by category name and to apply markups to each category when billing a project or class of projects.
For example, your General Ledger may have several reimbursable accounts for travel (mileage, repairs, rental cars, and so on). However, you may not want this breakout on your invoice. To accomplish this, you can create an expense category called Auto and group all related expenses under this one category.