As a result, orders are considered to always be pending, and invoices are considered to be final billing. You cannot have a final billing until the order is completed and closed. The problem is some accounting departments and companies, organizations and universities may require an invoice before printing a check to be used as a deposit on an order. This typically only occurs when you require a deposit before starting an order. As a result you can print them a Pro-Forma Invoice which typically will satisfy most accounts payable departments invoice requirements. A Final Invoice will be issued to them once the job is completed and closed.

In Terms of Trade, a Pro-Forma Invoice is an invoice which purports to represent what a final invoice with all attendant details will look like.