Currently, QuickBooks Desktop Point of Sale only links to the desktop versions. For QuickBooks Online, you can go to the App Center and look for a third-party application.
Here's how:
On the left panel, click Apps.
Click the Browse Category drop-down list.
Select Point of Sale Solution.
Click the app so you can check more details.
I'd also suggest sending feedback to our Product Development Team about this request. To send feedback, log in to your QuickBooks Online account and go to the Gear icon. Then, choose Feedback under User Profile.
All feedback goes to them and everything we update in QuickBooks Online is based on that information.
Feel free to reach out to us if you have other questions or concerns. Thanks.
Actually there is another program that integrates QBO with your QuickBooks POS program. Is listed on the Intuit market place. It works similarly to the desktop integration.
One of the biggest advantages is that inventory is synced so that you can sell at POS but also sell using the QBO App or create special orders to invoice out of QBO.
This time, QuickBooks Point of Sale (POS) can only integrate with the QuickBooks Desktop version. You'll want to look at another third-party POS application to combine with QuickBooks Online at our Apps Center.
I've also added articles about the details on how to integrate QuickBooks POS with QuickBooks Desktop: