Hello there, @Gabe848.
In QuickBooks Online, you can add your state license number to your estimates and invoices by turning on the Custom Field feature. Let me guide you on how.
- Go to + New.
- Choose Estimates or Invoice, and click Customize.
- Select New Style.
- Click on the Content menu, then choose which section you want to edit.
- After choosing which section, scroll down and click on the Manage custom fields.
- Click the Add field.
- Add the necessary details, tick the Print on form to view it on your print, and Click Save.
In QBO, you can customize and personalize the layout and appearance of your invoices, estimates, and sales receipts. Check this article for more information: Customize invoices, estimates, and sales receipts in QuickBooks Online.
Please let me know if you have any questions about your invoices and estimates. Don't hesitate to reach out here in the Community. We are just one post away.