Hello, daxd.
Let me share some details for the desktop version.
With the same process for QuickBooks Online, an estimate is a non-posting transaction. This means that you are still planning to bill a customer. If you have not yet created an invoice from this estimate, the inventory quantity will remain the same.
You can search for a third-party application here that can help you track the inventory on estimates.
To learn more about the inventory feature in QuickBooks Desktop, please check out these articles:
In case you need help with other task in QuickBooks Desktop, you can visit our general help topics page. Just type your concern in the search field and this page will route you to the related help articles, Community discussions, video tutorials and more.
If there's anything else you need, please feel free to leave a reply on this thread. I'll be around to help you out again. Take care!
