When a VAT return is filed you get a confirmation email that its accepted. This email is going to an old email address, where do I update this email address?

QuickBooks Online uses the contact information that's saved in your HRMC account for sending email confirmation, Suzie.

You can go to this link to get more details about making changes to your business details in your HMRC account: Tell HMRC About A Change To Your Business.

I'd also recommend reaching out to them just in case you're unable to find the option to make the changes. Let me share this link with you: https://www.gov.uk/contact-hmrc.

Lastly, you're welcome to review or bookmark these articles for future reference when handling taxes or filing returns in QuickBooks Online:

• Take Action And Fix MTD Issues And Errors In QuickBooks Online
• Set Up And Edit VAT Settings, Codes, And Rates In QuickBooks Online

Please feel free to seek assistance in the Community if you need help when completing VAT returns or other bookkeeping tasks in QBO overall. We'll make sure to answer them for you.