Adding logos to QuickBooks invoices is quite simple. In the Create Invoices window, click on the Customize icon to open the Basic Customization window.
Check Use Logo in the Basic Customization window.
Surf to your logo and select it. Click Ok to the messagebox that appears telling you QuickBooks will copy your image to a new location. Back in the QuickBooks Basic Customization window, you can see your logo on the invoice. Use the Layout Designer to resize or reposition your logo.