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

No — Shopify validates VAT numbers on guest and Shop Pay checkout, not on B2B checkout, and only with Shopify Tax and an EU fulfillment location.

Not at the B2B checkout: Shopify validates VAT numbers at guest and Shop Pay checkout only, for stores using Shopify Tax with an active EU fulfillment location.

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