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Notification of Uncertain Tax Treatment: consultation on extension 

Last updated: 24/03/2026

  • A new HMRC consultation was published on 12 March 2026 seeking views on the government’s proposal to extend the Notification of Uncertain Tax Treatment (UTT) regime.
  • The proposal is to extend the scope of the regime by applying it to individuals and trusts; bringing additional taxes within the scope of the notification requirement; and introducing a new ‘trigger’ for notification where there is more than one credible legal interpretation and HMRC’s view is not known.
  • Timing: the government intends that any legislation will be introduced in the next available finance bill and apply to returns filed after 1 April the following year. The consultation closes on 4 June 2026.

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Contacts

Beth Slayden
Beth Slayden

Associate Director

+44 (0)20 7303 2686

bslayden@deloitte.co.uk

Sophie Hatton
Sophie Hatton

Consultant

+44 (0)20 7007 5290

sjhatton@deloitte.co.uk