How to Create an Invoice in QuickBooks Desktop?

In QuickBooks, the most viable method for creating invoices depends on the nature of the service you need to bill to your client. You can create an invoice in QuickBooks Desktop in various ways: using a simple set price, a progress-based fixed price, or the initial cost of the job plus the time or materials.
Once you go for a desirable option, you can modify the invoice to reflect specific details or terms in your project's contract.