Hi there,
Glad to have you reach out to us in the Community. I'll be happy to share more info and help steer you in the right direction so you can continue to get your work done faster using QuickBooks.
In order to link invoices to expenses, you'll have to use billable expenses. Here's an article that shows you how to: Enter billable expenses. The article shows you how to add billable payments to invoices on Step 3 in the article. Let me know how you make out as you browse through the article.
In case you need additional assistance I encourage you to contact our support team so they can assist you further. Here are our contact details:
- Schedule a Callback or start a Chat: click (?) in the upper right in QuickBooks Online > enter "Contact support" > choose Contact Us > provide a brief summary > select Let's Talk > choose Get a callback or Start a Chat.
- Social Media: Facebook, Twitter, and Instagram.
- Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.
Feel free to keep me posted on how you make out. Enjoy the rest of your day.
