From Institute of Economic Affairs <[email protected]>
Subject Wealth Tax Debates
Date December 7, 2025 10:01 AM
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In today’s newsletter:
Kristian’s debates on wealth taxes
Why spontaneous order can solve complex problems better than Government can
Why are so many young people leaving Britain?
& more!
This week, I spoke at two panel debates on the issue of wealth inequality and policy responses to it. One was organised by King’s College London’s Politics Society, where IEA Economics Fellow Dr Andrew Lilico and I argued against the former Business Secretary Sir Vince Cable and Prof Josh Ryan-Collins from University College London. The other one was organised by the LSE Hayek Society, where I argued [ [link removed] ] against author and YouTuber Gary Stevenson.
It was interesting to see how different proponents of the wealth tax see completely different things in it, and have completely different ideas of what such a tax is supposed to achieve. The wealth tax has become all things to all people, and if we ever get one, most of them will end up disappointed.
Sir Vince Cable argued that high levels of private wealth can be a bad thing, because they allow the super-rich to manipulate political discourse. He singled out Elon Musk, who previously supported Donald Trump’s campaign, and Sir Paul Marshall, the co-owner and financial backer of GB News.
There are major problems with this style of thinking, but let’s ignore those, and just take the argument on its own terms rather than mine. Would a wealth tax really reduce the political engagement of the super-rich?
Suppose you are a politically opinionated multi-millionaire with £100,000 to spare. You are wondering whether you should use that money to acquire more assets, or whether you should use it to support a political project. A wealth tax would surely nudge you towards the latter option, because while your asset wealth is now being taxed, political campaigning is not: it is a form of consumption, and wealth taxes make present consumption more attractive relative to future consumption. So a wealth tax might promote the very thing Sir Vince wants it to prevent.
Prof Ryan-Collins, meanwhile, sees the taxation of wealth as a way to steer economic activity into more desirable directions. More specifically, he believes that we currently invest too much in property, and too little in other things.
I don’t believe in economic ‘steering’, and in the state determining what counts as a ‘desirable’ activity and what does not – but again, let’s ignore that, and judge the argument on his terms, not mine.
Actually existing wealth taxes have often done the precise opposite of what Prof Ryan-Collins wants to see: they have offered exemptions or favourable treatment for primary residences, so they may end up pumping more money into the housing market, not less.
Other than that: by presenting taxes on wealth as a tool to steer economic activity, Prof Ryan-Collins implicitly accepts that people respond to tax incentives. If they did not, there could be no steering.
This is the opposite of what proponents of wealth taxes usually claim. Once you accept that taxes can steer investment, you also have to accept that they can deter it.
The debate with Gary Stevenson, although notionally on a similar topic, was completely different in both style and substance. Sir Vince and Prof Ryan-Collins see wealth inequality as a problem, but not as a catastrophe. For Stevenson, on the other hand, the issue is existential: he sees it as the biggest social and economic problem of our time, and a self-accelerating one at that. In his mental model of the world, the top of the wealth distribution is a vortex which sucks all the wealth out of society, and which will keep doing so until actively stopped.
One small problem with this is that wealth inequality in Britain is not especially high. It is not high by historic standards, it is not high by international standards, and it is not increasing. So Stevenson’s big story breaks down even at the most basic factual level.
But he does have a gripping story to tell, and people want to believe him.
What I tried to do on both occasions, hopefully with some success, is to promote a counternarrative, alongside a mere critique of wealth taxes. Because ultimately, the main problem with the wealth tax is no that it’s a bad idea – it’s that it crowds out far better ones.
Kristian Niemietz
Editorial Director
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IEA Podcast: Head of Media Reem Ibrahim is joined by Managing Editor Daniel Freeman and Editorial Director Kristian Niemietz to review the budget and its fallout — [ [link removed] ]IEA YouTube [ [link removed] ]
Spontaneous Order
Spontaneous orders – from language to markets – emerge without central coordination and handle complexity better than government planning
Empirical studies show that spontaneous order outperforms coercive regulation in economic growth, natural resource management, and public service provision
New report challenges government intervention in climate change, public health, transport, and economic policy, arguing that complex problems require maximum freedom to solve
A new briefing paper from the Institute of Economic Affairs argues that spontaneous order – the emergence of complex systems without central coordination – provides strong grounds for resisting Government action, especially when proposed to correct market failures or promote efficiency.
Elaine Sternberg, author of Spontaneous Order: Analysis and Implications [ [link removed] ], said:
“The possibility of spontaneous order should highlight large arenas where government action is unnecessary and may well be actively counterproductive. Significantly, these are areas - like climate change, public health and welfare, and economic growth - where government is most likely to claim that extreme complexity requires coercive regulation. Recognising the potential and advantages of spontaneous order should encourage scepticism about, and opposition to, such popular public proposals.”
Government Action ‘Seldom Necessary’ In Complex Problems, Says New IEA Paper, [ [link removed] ] Cumbria Times [ [link removed] ]
News and Views
In memory of Edgar Wallner
It is with great sadness that I share the news that our long-standing supporter and friend of the IEA, Edgar Wallner, has passed away. We learned of his death from his daughter, Lucy, who wrote to say that her wonderful father had died the previous morning and that he had taken enormous pleasure from his association with the Institute.
Edgar was a charming and thoughtful presence at many IEA lunches and speaker events over the years. Those who met him will remember his warmth, good humour and genuine interest in ideas. Beyond the IEA, he had a distinguished career in business, notably leading Orthofix through a period of major growth and innovation, and he was widely admired for his integrity, humanity and principled leadership.
We are deeply grateful for Edgar’s loyal support of the IEA, his championing of free markets ideas, and for the encouragement he gave us over so many years. We extend our heartfelt condolences to his wife of 65 years - Judith and his children Penny, Michael, Lucy and Rebecca.
Linda Edwards
Chairman, Board of Trustees, Institute of Economic Affairs
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Last week’s budget was lamentable for many reasons.
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Wealth inequality is not a problem in Britain [ [link removed] ], Editorial Director Kristian Niemietz, CapX [ [link removed] ]
Wealth is not fixed, but political energy very much is, and it is in short supply. At the moment, too much of it is wasted on dead-end projects such as ‘Gary’s Economics’.
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I do not believe economics moves in perfect circles, nor do I think it progresses in a straight and predictable line. Instead, economic knowledge resembles a corkscrew: sometimes moving forward, sometimes looping backward, but gradually rising, inch by inch, as we correct mistakes and refine what we know.
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