How do I update QuickBooks to show that I have deregistered for VAT?

Hello, becksbrock1.

There isn’t a way to deactivate VAT once it’s turned on in QuickBooks. As a workaround, you can set your code to No VAT to avoid any prompts about entering VAT codes. Here’s how:

1. Select the Gear icon at the top. 
2. Click Accounts and Settings. 
3. Go to Advanced and click the pencil icon on Accounting. 
4. Go to Default tax rate selection and select No VAT.
5. Click Save and Done. 

For additional information, please check this article: https://quickbooks.intuit.com/community/VAT/Common-VAT-Codes/m-p/239529

You’re always welcome to visit us again if you have other questions about QuickBooks.