Wealth tax would massively backfire in UK, warns major six-year study
Key Points
- The IFS report warns that an annual UK wealth tax would face severe practical issues like asset valuation difficulties, create economic distortions, and discourage saving, investment, and high earners from staying in the UK.
- Wealth held by the richest 1% has been stable since the 1980s, but household wealth has nearly doubled as a share of GDP; younger generations struggle more with accumulation, especially home ownership.
- An annual wealth tax is less efficient than alternatives like reforming capital income/gains taxes or investing in education, skills, jobs, and regional development to address inequalities.
- The Deaton Review recommends a precise, evidence-based policy toolkit focused on income distribution, market failures, and least-damaging interventions rather than direct annual wealth taxation.
A major new report from the Institute for Fiscal Studies (IFS) warns that an annual wealth tax in the UK would bring serious practical problems, economic distortions and disincentives that could undermine its goals.
Published on Monday (27 April), the report draws on six years of the Deaton Review of Inequalities, sets out a policy toolkit for addressing inequalities while considering trade-offs with economic efficiency.
The Deaton Review finds that the share of wealth held by the richest 1% in the UK fell markedly over the 20th century and has remained fairly stable since the 1980s.
Wealth has, however, become much more important relative to incomes, with household wealth nearly doubling as a share of GDP between the early 1990s and late 2010s. Younger generations face greater challenges accumulating wealth, particularly in home ownership.
The report stresses the need for precision as wealth differences arise from life-cycle stages, lifetime income variations (such as inheritances) and saving behaviours. Concerns about material living standards are better addressed through income policies than wealth taxes per se, the IFS said.
The drawbacks of an annual wealth tax
The IFS analysis highlights major issues with an annual levy on wealth:
- Valuation nightmares: Assets like private businesses are extremely difficult to value accurately. Boundaries between taxable and non-taxable wealth would create complexity, distortions and unfairness.
- Behavioural distortions: It would penalise saving and investment, discouraging wealth creation. Wealthy individuals could face strong disincentives to live in or invest in the UK.
- Inefficiency vs alternatives: Reforms to capital income and capital gains taxes could achieve more redistribution with less damage to saving and investment incentives. Broader policies improving education, jobs and regional opportunities would influence future wealth accumulation more effectively.
A one-off wealth tax might better target existing holdings with fewer ongoing distortions, but it risks creating expectations of future taxes, still faces valuation challenges, and raises questions about retrospectively “correcting” past outcomes, the group said.
The report notes these drawbacks would be “especially severe” at the very top, where wealth often involves complex, non-arm’s length assets.
A broader policy toolkit needed
The Deaton Review emphasises three guiding questions for policymakers concerned about specific inequalities:
- What is the source and does it involve market failure?
- How do inequalities interact?
- What is the least inefficient way to address it, and do benefits outweigh costs?
It also flags risks of government failure due to political, administrative or informational constraints.
The IFS recommends focusing on income distribution policies such as tax/benefit reforms, education, skills and regional development, over direct annual wealth taxation.
The report, part of a vast body of work including 79 papers, covers inequalities in education, health, income, geography and more.
It finds UK income inequality high by European standards (though below the US), significant regional divides, and persistent educational gaps despite a strong equalising state school system.
Public concern is highest for geographical and income/wealth inequalities, but the IFS stresses evidence-based trade-off analysis over simplistic solutions.
