Hello @kendavis1661,
Thank you for posting here in the Community. I'm here to provide some information about making VAT adjustments in QuickBooks Online.
There are specific conditions to be able to correct errors using the current VAT return. The system should allow you to make changes before you submit it to HMRC.
You can adjust the current account if they're:
- below the reporting threshold
- not deliberate
- for an accounting period that ended less than 4 years ago
If you're still unable to make adjustments, I recommend you proceed with contacting QuickBooks Support Team. They'll be able to further assist you with making changes to the return.
Here's how:
- Go to the Help menu at the upper right.
- Choose Contact Us.
- Enter your specific concern in the What can we help you with? box.
- Click Let's talk.
- Select Get a callback or Start a chat.
For more information, as well as how to adjust specific boxes in a VAT return, I recommend the following article: Adjust your VAT liability.
Drop me a comment below if you have any other questions related to the VAT return. I'll be happy to help you some more.