Upper Tribunal allows HMRC appeal: Invisalign aligners are NOT “dental prostheses” and are standard-rated

In The Commissioners for HMRC v Align Technology Switzerland GmbH and Align Technology BV [2026] UKUT 00256 (TCC), the Upper Tribunal (Tax and Chancery Chamber) has reversed the First-tier Tribunal’s 2025 decision and held that Invisalign clear aligners are not “dental prostheses” within Items 2 and 2A of Group 7 of Schedule 9 to VATA 1994. Supplies of the aligners are therefore not exempt from VAT. [assets.pub…ice.gov.uk], [gov.uk]

Item 2 exempts“the supply of any services consisting in the provision of medical care, or the supply of dental prostheses” by a dentist or dental-care professional; Item 2A extends this to dental technicians. Both items implement Article 132(1)(e) of the Principal VAT Directive. The single issue in the appeal was whether the aligners fell within the concept of “dental prostheses”. [assets.pub…ice.gov.uk]

The FTT had ruled that they did: two of three specialist dictionaries included orthodontic appliances in their definition of “dental prostheses”, and both HMRC and the appellants accepted the aligners were “orthodontic appliances”. The UT saw the question differently. First, it rejected Align’s threshold argument (per Sloane KC) that the meaning of “dental prostheses” was a pure question of fact, so that only the Edwards v Bairstow test could support an appeal: statutory construction is a question of law, and the UT was free to disagree with the FTT on construction alone. [claritaxnews.com]

On construction, the UT held that the ordinary meaning of “dental prostheses” requires replacement of missing or broken teeth. Aligners, which move natural teeth without replacing them, do not fall within that meaning. The UT also expressly relied on the EU VAT Committee Guidelines and Working Paper — which the FTT had chosen not to follow — noting they“provide a measure of additional support” for the same conclusion, reached independently on the wording of the Exemption and the case law. [claritaxnews.com]

For dental practices, orthodontists and importers/distributors, the practical implications are:

The judgment is also a helpful reminder that in exemption disputes, EU VAT Committee Guidelines and Working Papers, while not binding, can be persuasive where they align with the ordinary meaning and purpose of the exemption.