Taxing Capital Gains Risks Undermining Investment, Not Reforming it

Fixing the £100,000 Tax Trap: A Pro-Growth Imperative

The £100,000 tax cliff edge, where personal allowances phase out, creates an effective marginal tax rate of 60 per cent for many earners. This anomaly, described as “a crazy situation” by Jeremy Hunt, has led people to reduce hours or boost pensions to avoid the threshold. HMRC expects 2.06m individuals to exceed the limit next year, making it a pressing fiscal issue.

Why Taxing Capital Gains Risks Economic Stagnation

Lord O’Neill’s reported suggestion to align capital gains tax (CGT) with income tax rates overlooks key differences between investment and earned income. Unlike salaries, investments carry inherent risks and are often taxed multiple times. Raising CGT could deter long-term capital formation, a critical driver for UK economic growth.

IG recently analysed HMRC’s own published behavioural assumptions and found that aligning Capital Gains Tax with income tax rates could actually leave the Treasury almost £8bn worse off each year. “The Treasury’s own modelling assumes exactly this behaviour,” says Healy. “It’s a lose-lose policy that penalizes risk-takers without achieving fiscal goals.”

Regional Impacts

Expert Voices: A Call for Balanced Reform

A tapered personal allowance and inflation-linked thresholds would address the cliff edge without deterring capital.

Solution Pathways: Bridging Policy and Practice

“The goal should be to create a tax system that rewards ambition,” says Healy. “By fixing the £100,000 trap and maintaining low CGT rates, the UK can attract the capital needed to boost productivity and innovation.”

Looking Ahead: A Fiscal Crossroads

The debate over the £100,000 tax trap and CGT reform highlights a broader challenge: balancing fiscal responsibility with economic growth.