EBay transactions are matched using the app onesaas and the money I receive eBay fees is deducted so revenue is not calculated, is this fine for vat returns?

Let me provide some information on how eBay payouts are recorded for vat returns, emnanbutt.

Since transactions are handled by eBay and are matched using the OneSaas app, this controls what and how QuickBooks receive the information. If you want to know if OneSaas can send data so you can record eBay payouts for vat returns, I recommend contacting their support team. This way, they'll be able to explain the process to you clearly and resolve your issue.

In line with the OneSaas app integration, you can check out this article for more details: Intuit Acquires OneSaas To Accelerate The Integration.

Additionally, QuickBooks tracks your payment due dates in one place to avoid late returns, surcharges, and penalties. To know how to record your tax payments so your VAT payable stays up to date, go through this article for your guide: File Your VAT Return And Record Tax Payments In QuickBooks Online.

Feel free to let me know if you have any questions about vat returns. I'd be here to help.

@emnanbutt-hotmai 

QB Connector (Onesaas) is a free application and offers only limited functionality. Consider getting a paid connector for better features.

I can help you with finding an app that works best with QuickBooks Online (QBO), emnanbutt.

There are lots of apps that work perfectly with QuickBooks Online. You can look for a third-party app from our QuickBooks Apps. Just choose the right application that suits your business.

After looking for that app, you can check with their Customer Support on how to sync or integrate it with QuickBooks Online. 

In the meantime, you can refer to the following article on how to enter a VAT only or 100% VAT transaction in QuickBooks Online by either creating an expense or by adjusting the VAT option. 

I'm always here if you need more help looking for the perfect app that suits your needs. Take care, and have a wonderful day!