Can l undo a filed VAT retrun

Hey there, mildredm-sadiemo.

I'll explain how to undo the VAT return in QuickBooks Online. 

Once your tax return has been submitted, QuickBooks records this as Mark as filed. Undoing it requires contacting our Payroll support team. This way, one of our representatives can check your account and do the process for you. 

Here's how to contact them:

1. Click Help, located in the upper right corner.
2. Select Search.
3. Tap Contact Us.
4. Enter your concern in the What can we help you with? field.
5. Then click Continue.
6. Choose a way to connect our support.
   

The following resources can provide you with further information about reporting VAT and removing its rate from the system:

• Remove a VAT or GST rate
• File and pay Tax/GST

Please don't hesitate to post again here in the Community if you have other concerns. I'm always ready to help.