Question to the HM Treasury:

To ask the Chancellor of the Exchequer, with reference to her Department's policy paper entitled Capital Gains Tax: Rates of tax — carried interest, published on 30 October 2024, what the evidential basis is for the cost of implementing a one year increase to Capital Gains Tax.

The published operational costs represent a high-level cost estimate for the changes required to HMRC IT systems to deliver this policy change which follow a recognised standard methodology. HMRC do not provide detailed costs related to policy changes.

Separately, the revenue impacts of the changes to the rates of Capital Gains Tax (CGT) on carried interest from 6 April 2025 are included in the costings published in the main Autumn Budget 2024 document.

The CGT changes are the first step of a reform package that will put the tax treatment of carried interest on a fairer and sustainable footing, while preserving the competitiveness of the UK as a fund management fund. From 6 April 2026, the carried interest tax regime will move fully across to the Income Tax framework; this will be legislated in a future Finance Bill, which the House will have the opportunity to consider.