How to Automate EU VAT Exemption & VIES Validation at Shopify Checkout

An EU VAT number check is one part of a B2B order. The store also needs the right customer journey, an eligible destination and tax settings that match the merchant’s business.

For agencies configuring Wezy, start with the Tax Exempt setup guide. It covers the theme and Shopify Plus paths, the app’s settings and the orders to test. A French version is also available.

Check what Shopify Tax already covers

Shopify Tax supports VAT validation and reverse-charge exemptions in supported journeys. Its availability and behavior depend on the store’s tax service and checkout configuration. Read Shopify’s current EU VAT documentation before choosing an additional app.

Wezy Tax Exempt gives the agency its own collection blocks, validation history, request form and invoice-line setup. Pro B2B adds HT/TTC display and automatic discount settings. Those controls are useful when the client wants to adapt and follow the B2B journey more closely.

Choose the VAT collection path for the store

The app’s field inside the information, shipping or payment checkout steps requires Shopify Plus. Other supported stores use the VAT ID Check theme block before checkout.

On the theme path, test with an authenticated customer and a complete shipping address. Entering an email address alone does not establish the customer’s identity for exemption.

A supported VAT result must also pass the app’s country-context checks. An invalid number, incomplete address or ineligible domestic delivery must not receive Wezy’s EU exemption.

Configure Wezy Tax Exempt

1. Install Wezy Tax Exempt and select Starter or Pro B2B.
2. In Settings, enter the seller’s VAT number, company name, address and country. Choose whether to enable EU reverse charge and select the text language.
3. Add VAT ID Check to a suitable theme section. For the Plus checkout path, add VAT Number Field, enable Allow app to block checkout and save.
4. Submit a suitable test validation. In VAT Validations, check the result and stored VIES consultation proof.
5. Inspect the final Shopify checkout and order totals. Compare an eligible cross-border case with a domestic case and an invalid number.

The full guide explains these steps and includes a test matrix and troubleshooting answers.

Configure HT/TTC separately

Pro B2B includes the HT/TTC Price Toggle theme block. Its visibility can be set for tax-exempt customers or all visitors.

The switch changes displayed prices. The automatic discount has separate settings under Tax Exempt Discount (HT/TTC), including the default VAT rate, collection overrides and shipping treatment. Test the displayed price and final amount paid separately, including any existing promotion and relevant market or currency.

Prepare the invoice line

In Invoice Setup, follow the instructions to add the app’s reverse-charge line to the relevant notification or invoice template. Check a qualifying test order and an ordinary taxed order.

Wezy does not generate a complete PDF invoice. Verify the template and any invoicing tool used by the client. See the B2B invoicing checklist for the distinction between validation records and invoice content.

Evaluate the app at your own pace

Starter is USD 9.99/month. Pro B2B is USD 24.99/month and includes the pricing controls. The first subscription has a 7-day trial; Shopify displays the billing terms before confirmation.

Use the agency guide to configure and test the store. If a result needs checking, email the Shopify plan, theme, tax configuration and test outcome to support@wezy.app.