Zero Tax rate

Thank you for contacting the Community, @I-Petro.

You can add another VAT code for the Zero Tax rate that you'd want to set up to your customer's bill. Here's how:

1. In the left menu, click Taxes. 
2. Click the Add Tax button in the upper right hand.
3. In the Add Tax screen, navigate to the Tax rate section to enter a new rate.
4. Follow the on-screen instructions on how to set up the tax.
5. Hit Save. 

Here's an article for more details: How do I set up sales GST/VAT rates and use them on forms? (International QBO).

Once done, you can now add the zero tax rate to your customer's bill. 

if there's any other way I can be of assistance, let me know by commenting below. I'm here for you. Have a great day!