Can you show reverse VAT on invoices in Quickbooks? We currently use Joist but have been told this isn’t supported yet and we can’t show a negative figure.....

I've got a few handy information about VAT reverse charge in QuickBooks Online, @danielle39.

I can see how it would be beneficial to you and your business to have this feature supported. Currently, the option to show the reverse VAT on invoices is unavailable. It will only show the VAT amount and code.

If you wish to have this option, you can look for third-party applications that can help enter the reverse charge CIS in your invoice. To do this, you can go to the App menu in your account or visit our marketplace.

1. Go to this link: https://quickbooks.intuit.com/app/apps/.
2. Select your region 
3. Search for an app that may suit your business needs.

All the applications listed are verified and approved by our product engineers to work best with QuickBooks Online.

For additional info, please see this article: VAT reverse charge CIS.

I'm also adding this link to learn more about the list of common VAT codes available in QuickBooks: Common VAT codes.

 Feel at ease to comment down below if you need clarifications with reverse VAT in QuickBooks. I'll be around to lend a hand. Have a nice day.