Thank you for visiting the QuickBooks Comunity, accounts-2upc-co. I'll be sharing details to ensure you can organize your supplier VAT data in QuickBooks Online.

Since your supplier is not registered, you can use the No VAT code. This code is for goods and services that are outside the scope of VAT. I recommend looking for further information on what VAT codes to use for your supplier transactions by checking this article on QBO UK.

Additionally, you can also refer to this UK Government article for extra details on when to use the No VAT code.

On the other hand, if the companies/suppliers are fully VAT-registered, kindly follow this article on how to manage their entries in terms of VAT and rates: Set up and edit VAT settings, codes and rates.

Furthermore, I recommend speaking with HMRC support for further assistance with what codes to use in managing supplier transactions.

Lastly, you may refer to this article to see steps on how you can adjust your VAT due if you use Automated VAT in QuickBooks Online: Create or delete a VAT adjustment.

I'm always here if you still have questions about managing VAT or anything else. I'm always around to help. Have a great rest of the day!