How to manage VAT exemption for EU B2B customers with Avalara?

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Hi everyone,

I’m running an online store with Wix and using Avalara to automate tax calculations.

My business is based in an EU country (Belgium), and I want to configure automatic VAT exemption for business customers located in the EU (outside my country) who provide a valid EU VAT number (to be validated via the VIES system).

What I want to achieve:

  • A VAT number field at checkout.
  • That number to be sent to Avalara.
  • If valid, the system should automatically apply 0% VAT on the order.

Avalara is active in my Wix dashboard and tax automation works, but I can’t find any setting to validate VAT numbers or enable intra-EU B2B exemptions.

Has anyone successfully set this up?
Is there a hidden setting or workaround within Wix or Avalara to make this work?

Any help would be greatly appreciated. Thanks in advance!

2

Thanks for sharing your question, that’s an important setup for EU businesses.

From what I’ve seen, Wix’s Avalara integration doesn’t yet support automatic VAT number validation or intra-EU B2B exemptions directly.

Some common ways to handle this include:
Adding a custom VAT number field at checkout with Wix Velo to collect the number.
Using the VIES VAT validation API (or similar) to check VAT numbers in real time.
Applying tax exemptions dynamically via custom backend code based on the validation result.
For full automation, some businesses connect Avalara’s API directly with more advanced custom development.
It takes a bit of extra work beyond Wix’s default features but is definitely possible.

What approach are you considering so far? I’d love to hear more about what you’ve tried!