Advance Corporation Tax Reform: Call for Evidence

Why It Matters

Eliminating ACT could reshape corporate cash‑flow management and tax planning for thousands of UK firms, while influencing overall fiscal revenue. The outcome will signal the government’s broader approach to corporate tax simplification.

Key Takeaways

• Government will repeal ''shadow ACT'' rules 1 April 2026
• Consultation seeks timeline for using remaining ACT balances
• Potential full phase‑out of ACT under consideration
• Evidence deadline: 11 June 2026, 10 am
• Changes may alter corporate tax planning strategies

Pulse Analysis

The Advance Corporation Tax (ACT) was originally introduced to tax dividends at the corporate level, but was abolished in 1999. A set of transitional provisions, known as the ‘shadow ACT’ rules, allowed companies with historic ACT credits to continue using them under strict limits. By removing these constraints from 1 April 2026, the Treasury signals a decisive step toward simplifying the corporate tax landscape and eliminating legacy mechanisms that no longer align with modern fiscal policy.

For businesses, the repeal of shadow ACT rules and the prospect of a full ACT phase‑out present both opportunities and challenges. Companies holding residual ACT balances must now assess the optimal timing to claim those credits before any further reforms potentially render them unusable. This could affect cash‑flow forecasts, dividend distribution strategies, and overall tax liability calculations. Moreover, the removal of ACT may modestly boost Treasury receipts by reducing the administrative complexity that previously allowed firms to defer tax payments.

Stakeholders are urged to engage with the consultation by 11 June 2026, providing evidence on realistic usage windows for remaining ACT credits and the broader economic impact of a complete repeal. Respondents should outline how the change would influence their tax planning, investment decisions, and competitive positioning. In the wider context of UK tax reform, this initiative reflects a push toward a more streamlined, transparent corporate tax system, aligning with international best practices and potentially enhancing the UK’s attractiveness to investors.