Can EU/UK B2B customers validate their VAT number at Shopify checkout to get reverse charge automatically?

What VAT validation at Shopify checkout actually does

Shopify released VAT number validation in checkout on February 25, 2026. When a customer types a VAT number into the field, Shopify validates it in real time through the EU's VAT Information Exchange System (VIES), and on an eligible order the reverse charge exemption is applied automatically. Shopify describes that exemption as fully exempting VAT on orders shipped to customers within the European Union or the United Kingdom, provided the destination country is different from the country of the fulfillment location.

Two conditions gate the feature, and both have to hold. Shopify Tax must be what calculates your tax in the European Union or the United Kingdom, and an active fulfillment location in the European Union is required for the EU/UK reverse charge exemption to work properly.

Turning the field on is then yours. In the checkout settings, the Company VAT number field offers Don't include, which is the default, and Optional — there is no Required. Which checkout your buyers actually use decides whether the field changes anything for them.

Guest and Shop Pay checkout only, not the B2B checkout

This is where the feature and the question part company. Shopify states that VAT validation for the reverse charge exemption is available for customers that use guest checkout or Shop Pay checkout, and that VAT validation isn't currently available for B2B-specific checkouts. That sentence stood on both the VAT-validation page and the EU tax-management page on 1 September 2026, and it holds on any plan.

What covers those buyers is set before they order rather than at checkout. Shopify documents that a B2B customer who should always receive a tax exemption can have their tax status set to Don't collect tax from their customer profile, which, without requiring real-time VIES validation, applies to all future orders from that customer and must be configured before the customer places their order. On Basic, Grow and Advanced you manage VAT information through customer profiles; on Shopify Plus the same capabilities live on company locations. The EU and UK tax-management pages also document that a VAT number added to any customer or B2B profile is automatically validated and stored in the profile for future reference.

Whether the B2B-checkout gap closes is not something the documentation answers. No Shopify page we have read — the VAT-validation page, the EU and UK tax-management pages and the changelog post, read on September 1, 2026 — states a plan to bring validation to the B2B checkout. In May 2025, while the feature was still being explored, Shopify's own tax team named an obstacle to bringing validation to checkout — guest and Shop Pay checkout got the field in February 2026, and the B2B checkout did not.

Which EU and UK routes the exemption covers

Eligibility follows the order's fulfillment location, not your store address. Where an order is fulfilled from more than one location, only one of them is used as the origin, and that origin is determined when the order is created. Official pages diverge here, and Shopify has not reconciled them: the VAT-validation page states that changing an order's fulfillment location after the order is created doesn't re-evaluate the reverse charge exemption, while the EU and UK tax-management pages and the changelog post tell merchants with multiple fulfillment locations that they can change that location to another one outside of the customer's shipping country to allow the exemption to work as intended.

Shopify Help Center — VAT validation for the reverse charge (EU/UK) exemption, read September 1, 2026.

If the number fails validation, and what Shopify Tax costs

A failed check is not a blocked order — it is a taxed one. If VIES can't complete validation when a customer submits their VAT number during checkout, the reverse charge exemption isn't applied and VAT is charged by default. There is no option to manually override VIES validation.

Shopify adds that where one customer has made too many attempts, it might enforce a rate limit to protect merchants from possible fraud, and that validation confirms formatting and validity at the time of the check but doesn't guarantee the customer is authorized to use the number.

The reasons usually sit outside Shopify. The European Commission describes VIES as a search engine rather than a database, retrieving data from national VAT databases at the moment of the check, and an invalid result means the number is not registered in the relevant national database — because it does not exist, because it has not been activated for intra-EU transactions, or because the registration is not yet finalised.

The feature also rides on a paid service. For stores under $25,000,000 USD in sales, Shopify Tax is free until the store reaches a threshold Shopify publishes per store location as $100,000 USD, €100,000 EUR, £100,000 GBP or $100,000 CAD — lifetime sales for stores created on or after May 13, 2026, annual sales for older ones.

Past that threshold, the pricing page read on September 1, 2026 puts the European Union, the United Kingdom and Canada at 0.25% on Basic, Grow or Advanced, capped at 0.99 per order in the same currency — and at 0.15% on Shopify Plus. The annual cap and its cohort boundary have their own page.