Labour Capital Gains Tax – Key Changes Explained

The UK Labour government announced significant changes to Capital Gains Tax in its Autumn Budget on 30 October 2024, marking the most substantial overhaul of CGT rates in years. The increases affect a broad range of asset disposals, from shares to business assets, with new rates taking effect immediately for most transactions.

Finance Minister Rachel Reeves revealed the measures as part of a broader effort to raise tax revenue while maintaining the UK’s competitiveness as an investment destination. The changes were subsequently incorporated into the Finance Bill 2024-25, which passed through Parliament in the weeks following the Budget announcement.

For investors, business owners, and anyone holding significant assets, understanding these changes is essential for effective financial planning. The new rates represent a substantial shift from the previous regime established under the Conservative government.

What are the new capital gains tax rates under Labour?

The Labour government’s first Budget introduced higher Capital Gains Tax rates for most taxpayers. The increases apply to gains on assets other than residential property and carried interest, with the changes taking effect for disposals made on or after 30 October 2024.

The main changes to CGT rates represent a significant departure from the previous government’s approach. The Treasury’s impact assessment suggested these changes would affect hundreds of thousands of investors each year, with the additional revenue expected to contribute substantially to filling the fiscal gap identified in the Budget’s economic forecasts.

• Basic rate CGT increased from 10% to 18% for non-property assets
• Higher and additional rate CGT rose from 20% to 24%
• Residential property rates remained unchanged but now align with non-property rates
• Carried interest for fund managers increases to 32% from April 2025
• Business Asset Disposal Relief and Investors’ Relief face phased increases
• The Investors’ Relief lifetime allowance reduced from £10 million to £1 million
• Annual exempt amount remains frozen at £3,000 for 2024/25

When do Labour’s CGT changes take effect?

The Autumn Budget introduced a staggered timeline for CGT changes, with some taking effect immediately and others phased in over the following two years. Understanding these dates is critical for anyone considering asset disposals in the near future.

Immediate Changes (30 October 2024)

The main rate increases for non-property assets took effect on the day of the Budget announcement. This means any disposal completed on or after 30 October 2024 falls under the new rates, unless specific anti-forestalling provisions apply to earlier contracts.

The reduction in the Investors’ Relief lifetime limit from £10 million to £1 million also took effect immediately. Anyone who had not yet used their full allowance before this date now faces a significantly reduced ceiling for future qualifying disposals.

April 2025 Changes

From 6 April 2025, the rates for Business Asset Disposal Relief and Investors’ Relief increase from 10% to 14%. The carried interest rate also rises to 32% on this date, affecting fund managers and investment professionals who receive performance-based compensation.

April 2026 Changes

The final phase of changes arrives on 6 April 2026, when BADR and Investors’ Relief reach their new permanent rate of 18%. More significantly, carried interest will undergo fundamental reform, being treated as trading profits subject to income tax and Class 4 National Insurance Contributions, potentially reaching rates of 45% or more when combined with NICs.

How does Labour’s capital gains tax affect investors?

The CGT changes have far-reaching implications for different categories of investors. The increases affect everything from individual share portfolios to significant business disposals, fundamentally altering the after-tax returns expected from various investment strategies.

Individual Share Investors

Individual investors holding shares outside of tax-advantaged accounts like ISAs or pensions now face substantially higher tax bills on profits. A basic rate taxpayer with a £100,000 gain would now owe £18,000 in CGT compared to £10,000 previously. Higher rate taxpayers would owe £24,000 on the same gain, up from £20,000.

These increases make tax-efficient investing through ISAs and pensions more valuable than ever. The annual ISA allowance of £20,000 provides a meaningful shelter from future CGT liability for those with substantial portfolios.

Business Owners and Entrepreneurs

Business owners considering the sale of their enterprises face a more complex landscape. The phased increases to Business Asset Disposal Relief reduce the attractiveness of business sales, though the relief remains available at preferential rates compared to standard CGT.

The reduction in the Investors’ Relief lifetime limit to £1 million is particularly significant for those who have invested in growing businesses through schemes designed to encourage patient capital. Investors who had not yet used their full previous £10 million allowance now have far less scope for future relief.

For those with existing plans to sell businesses or investments, accelerating disposals before the April 2025 and April 2026 increases may prove beneficial, though anti-forestalling rules may limit the effectiveness of post-Budget planning in this area. Professional bodies such as the Tax Law Committee recommend seeking early professional advice to understand how these rules apply to specific circumstances.

What is the timeline of CGT changes under Labour?

The implementation of Labour’s CGT reforms follows a carefully sequenced approach, with different changes taking effect at specific points. This chronology helps investors understand when their planning decisions need to account for new rates.

1. 30 October 2024: Autumn Budget announced; main CGT rates increase to 18% (basic) and 24% (higher/additional) for non-property assets. Investors’ Relief lifetime limit reduced to £1 million.
2. 30 October 2024 onwards: New rates apply to all qualifying disposals unless protected by anti-forestalling provisions or excluded contracts.
3. 6 April 2025: Business Asset Disposal Relief and Investors’ Relief increase to 14%. Carried interest rate rises to 32%.
4. 6 April 2026: BADR and Investors’ Relief reach final rate of 18%. Carried interest fundamentally reformed to trading profit treatment, subject to income tax and Class 4 NICs.

What is confirmed versus uncertain about Labour’s CGT changes?

While the broad strokes of Labour’s CGT changes are clearly established, certain details continue to require clarification as the legislation progresses through Parliament and HMRC issues detailed guidance.

The official HMRC guidance provides the definitive reference point for confirmed rates and effective dates, though additional clarifications continue to emerge as the legislation is implemented.

What is the background to Labour’s CGT reforms?

The decision to increase Capital Gains Tax rates reflects the Labour government’s broader fiscal strategy. The Autumn Budget identified a significant gap between existing spending commitments and available revenue, prompting ministers to look beyond the income tax and National Insurance increases announced alongside the CGT changes.

Capital Gains Tax had remained largely stable during the previous government’s tenure, with rates held at 10% and 20% for non-property assets despite periodic calls from various advisory bodies to align CGT more closely with income tax rates. Bodies including the Office for Tax Simplification and the Institute for Fiscal Studies had both suggested that the differential between income tax and CGT created distortion in investment decisions.

The government’s approach stops short of full alignment, which would have seen CGT rates reach 40% or 45% for higher and additional rate taxpayers. Ministers argued that such a move would damage the UK’s competitiveness as a location for investment and risk triggering asset sales that would reduce rather than increase tax revenue.

What do official sources say about the CGT changes?

The government’s official documentation provides the authoritative source of information on the CGT changes. Treasury analysis accompanying the Budget suggested the rate increases would generate approximately £2.5 billion annually once fully implemented.

“The changes to Capital Gains Tax rates ensure that those with significant asset holdings make an appropriate contribution to the fiscal consolidation required to protect public services while maintaining the UK’s position as a competitive location for investment.”

— Autumn Budget 2024 Technical Note

HMRC’s published guidance confirms that the new rates apply to qualifying disposals unless specifically protected by the anti-forestalling provisions, which are designed to prevent last-minute arrangements intended solely to capture more favourable treatment under the previous rules.

“Where a contract became unconditional before 30 October 2024, the previous rates may continue to apply regardless of when the disposal actually takes place, provided the contract is not an ‘excluded contract’ under the anti-forestalling rules.”

— HMRC Capital Gains Tax Guidance

Professional bodies have highlighted the importance of early professional advice for anyone considering significant asset disposals in the current environment. The Tax Law Committee has published detailed analysis of the practical implications for different types of taxpayers.

What are the key takeaways from Labour’s CGT changes?

The increases to Capital Gains Tax announced in the Autumn Budget represent a significant shift in the taxation of investment returns. While the rates remain well below what would apply under full alignment with income tax, the cumulative effect of immediate increases and phased future rises creates a substantially different environment for investors and business owners.

For those with near-term plans to dispose of assets, the window to potentially benefit from lower rates is narrowing rapidly. Anti-forestalling rules limit the effectiveness of contracts entered into after the Budget announcement, making professional advice essential for anyone with pending transactions.

The preservation of reliefs like BADR and Investors’ Relief, albeit at higher rates, provides some comfort for entrepreneurs and investors in growing businesses. However, the reduced lifetime limit for Investors’ Relief means future planning must account for significantly tighter constraints.

For further reading on property-related topics, see our guide on Trade Me Rural Property – Tips for Buying Farms and Land.

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