Thank you for sharing your feedback, @leesa_c.

I recognize the importance of having an optional field to add a tip to an invoice. I'll take note of your feedback and let our Product Development team know about it. This way, we can improve QuickBooks to suit your needs.

For future reference, check out this article to learn more on how to customize invoices: Create and manage invoices in QuickBooks Self-Employed.

Please let me know if there's anything else I can help you with. I'm always here to back you up. Stay safe!