I can see the benefit of being able to add the tip feature on your invoices for your catering business, @carsonscatering. That's why I'm here to share updates of this feature in QuickBooks Online (QBO).

Our product engineers are constantly looking for ways to enhance the QBO system and provide convenience to its users. Currently, the tip feature isn't still available. Then, we don't have an estimated time frame as to when it'll be implemented. You may integrate a supported third-party application that offers the tip feature to your invoices. Just visit the QuickBooks Apps page to choose the one that best suits your needs.

In the meantime, I'd also recommend visiting our blog. This is to keep you updated with the latest news, features, and product enhancements for QBO: The QuickBooks Blog.

Also, I'm adding this article to further guide you in recording and adding tips or gratuity in QBO: Share tips with your team.

Let me know in the comments below if you have other concerns about tips or inquiries about managing your invoices in QBO. I'm just around to help. Take care always.