Policy paper

Advance Corporation Tax reform

This tax information and impact note is about the amendment to the treatment of unrelieved surplus Advance Corporation Tax.

• From: HM Revenue & Customs
• Published: 6 March 2026

Documents

Reform of the Advance Corporation Tax regime

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Details

This measure repeals the shadow Advance Corporation Tax (ACT) rules, so that unrelieved surplus ACT balances may be offset against Corporation Tax liabilities without restrictions with effect from 1 April 2026.

Published 6 March 2026