Problem with the vat QuickBooks /HMRC system? done the 18month update thing for the online vat January and successfully submitted my return Now it’s decided not to work

I appreciate you for reauthorising your QuickBooks Online (QBO) connection with HMRC every 18 months, @tregainlandstour. Let me share further details about this.

Currently, we have an ongoing investigation about submitting VAT returns after reauthorising the connection between QBO and HMRC. Rest assured that our product engineers are actively working to have this resolved as soon as possible. This way, you can get back to business and submit your returns accordingly.

In line with this, I'd recommend contacting our Customer Care team. They can add your account to the list of affected users. This ensures you're in the loop about the investigation's status and its fix. You can provide the INV-55550 to our representative as your reference.

In case you want to talk to one of our representatives to relay this matter, you need to request a callback. Here's how:

1. Sign in to your QBO company.
2. Go to the Help menu.
3. In QB Assistant, enter the topic you need help with (i.e., MTD or Contact Support).
4. Select the Contact a human button to connect with a live support agent.
5. Choose the Call me back option.
6. Follow the on-screen instructions to complete the process.

In the meantime, I'm adding this article to provide all the things you need to know about MTD: Making Tax Digital (MTD) FAQs. It includes topics about submitting VAT in an MTD compliant way and then marking your return as filed in QuickBooks, to name a few.

Let me know how it goes in the comments below. If you have other concerns about submitting VAT returns in QBO, I'm just around to help. Take care always.