Sweden’s warning to California: Don’t tax wealth like we did 23%
By Magnus Henrekson30%
7/23/2026, 1:00:00 PM
BS Summary: This article contains 20 faulty reasoning types, including Appeal to Authority, Negativity Bias, and Overconfidence Bias, with Post Hoc (False Cause) as the most egregious example at 10.8% saturation with 145 hits. Analysis detected 1,000 faulty-reasoning hits from 1,348 analyzed words, generating a BS Score of 35.9% and a BS Rank of 23% (16,484 of 21,176 articles). This article is better (less manipulative) than 77.80% of the article peer group.
California has often looked to Scandinavia — in particular, Sweden — as a model for combining prosperity with ambitious social support.
As a Swede who has spent much of my career studying taxation, entrepreneurship, and business ownership, I understand why.
Sweden has a large welfare state, high taxes, and strong public institutions.
But Sweden also has a warning for California: Not every tax that sounds fair ends up strengthening society.
The wealth tax is the clearest example.
California voters will be asked in November to approve a one-off 5% tax on residents with net worth of more than $1 billion.
The purpose is understandable: fund healthcare, education, and other public priorities.
The appeal is equally obvious.
Why not ask the very richest residents to contribute more?
Sweden asked the same question.
For decades, we imposed an annual tax on net wealth.
The tax had deep historical roots: Introduced just before World War I as a temporary tax on the wealthy, it became permanent and lasted through Sweden’s high-tax postwar era.
Yet after almost a century, Sweden abolished the tax in 2007.
It did so not because Swedes had abandoned the welfare state but because the wealth tax had proved to be a poor instrument for financing it.
The Swedish experience shows three factors California should take seriously.
First, wealth taxes do not tax merely wealth; they tax the ownership of productive assets.
A billionaire’s wealth is rarely a pile of cash; in most cases, it consists of company shares — typically a company the individual founded or helped build.
Taxing that wealth year after year, or imposing a large one-time tax on unrealized value, can force owners to sell shares, borrow against volatile assets, or move themselves and their capital elsewhere.
This distinction matters enormously for entrepreneurship.
A successful founder may look wealthy on paper long before the company generates enough cash to pay a large personal tax bill.
If the founder must sell shares to pay tax, ownership becomes diluted.
If the founder borrows, the company and owner become more financially fragile.
If the founder moves, the state may lose not only tax revenue but also future investment, headquarters functions, philanthropy, networks, and role-model effects for the next generation of entrepreneurs.
Second, wealth taxes create especially strong incentives for avoidance and exiting, because the tax base is mobile.
Sweden learned this the hard way.
Over time, successful entrepreneurs and owners found ways to place assets abroad, change residence, or structure ownership to reduce exposure.
The most damaging effect was not always visible in the annual budget.
It was the activity that did not happen in Sweden: firms not expanded at home, capital not reinvested locally, ownership not retained by founders, and younger entrepreneurs learning that success would result in a requirement to pay the wealth tax.
The revenue, meanwhile, was small.
In research with Gunnar Du Rietz, I found that Sweden’s wealth-tax revenue never exceeded 0.4% of GDP in the postwar period and amounted to only 0.16% of GDP (0.3% of total tax revenue) in 2006, the last year before repeal.
That is a striking result.
A tax that appeared symbolically powerful was fiscally marginal.
It generated political conflict, administrative complexity, and economic distortions while contributing little to the financing of the Swedish welfare state.
Third, wealth taxes become riddled with exemptions, valuation problems, and inequities.
Sweden’s wealth tax looked simple in principle: tax net wealth.
In practice, it was anything but simple.
Assets had to be valued.
Private businesses were difficult to assess.
Housing, listed shares, family firms, and pensions were treated differently at different times.
As taxpayers adapted, lawmakers introduced rules to limit the worst effects.
But each fix created new distortions.
This is the paradox of wealth taxation.
If the tax is strict and comprehensive, it risks harming productive ownership and driving out mobile capital.
If it is softened through exemptions and valuation discounts, it becomes unfair, complex, and less effective.
Sweden tried to manage this balance for decades.
We never solved it.
By the time the tax was repealed, the conclusion had become broadly pragmatic rather than ideological.
Sweden kept high taxes on labor and consumption.
It kept a large welfare state.
But it removed a tax that punished capital formation and entrepreneurship, encouraged avoidance, and produced little revenue.
The repeal of the wealth tax followed the earlier abolition of inheritance and gift taxes.
These reforms were part of a broader recognition that a small, open economy cannot ignore how entrepreneurs, investors, and skilled people respond to incentives.
What happened afterward?
Sweden did not collapse into laissez-faire.
It remained a high-tax country with extensive public services.
But the environment for entrepreneurship improved.
Sweden has since become the European Union’s most dynamic startup economy, with globally known companies and a strong venture-capital ecosystem.
Stockholm is now often mentioned among the world’s leading startup hubs.
No serious economist should claim that repeal of the wealth tax alone caused this success.
Many factors contributed: education, digital infrastructure, openness to trade, pension-fund reforms, cultural attitudes, and earlier product-market reforms.
But removing punitive taxes on ownership helped create a more hospitable environment for founders and investors.
This is the lesson for California.
The issue is not whether the wealthy should pay taxes.
They should.
The question is how to tax in a way that raises durable revenue without undermining the entrepreneurial ecosystem that creates future income, jobs, and taxable wealth.
California is not Sweden.
It is larger, richer, and home to the most important technology cluster in the world.
But that makes the warning even more important.
Silicon Valley’s value lies not only in the net worth of a few billionaires.
It lies in a dense network of founders, engineers, venture capitalists, universities, experienced managers, and ambitious immigrants.
These networks are powerful, but they are not immovable.
Capital moves faster than factories, founders can relocate before their next company is formed, investment committees can shift attention, and young entrepreneurs can decide that the next risky venture is better launched elsewhere.
The California proposal is described as a one-time tax.
Sweden’s lesson is that taxpayers may not believe such assurances.
Once a government establishes the machinery to value and tax wealth, many will expect future governments to use it again.
That expectation alone changes behavior.
People do not wait for the second tax to plan for it.
Even California’s own fiscal analysts have warned that the proposed tax would likely raise a temporary sum while reducing ongoing income-tax revenue if billionaires leave the state.
This mirrors the Swedish problem: A short-term fiscal gain can come at the cost of a weaker long-term tax base.
A state that already depends heavily on high-income taxpayers should be especially careful about narrowing that base.
Supporters of wealth taxation often argue that billionaires owe their fortunes partly to society — to its infrastructure, education, laws, research, and public goods.
Although this is true, it does not follow that every tax on billionaires is wise.
A well-designed tax system should finance public goods while preserving the incentives to build, invest and stay.
The goal should be to tax realized income and consumption efficiently, close genuine loopholes, maintain broad tax bases, and avoid punitive levies on illiquid entrepreneurial wealth.
California does not need to repeat Sweden’s mistake to learn from it.
The state’s prosperity has been built by people who turn ideas into companies.
Tax policy should ask successful citizens to contribute, but it should not teach future founders that the reward for building in California is to become a fiscal target.
Sweden’s message to Californians voting in November is simple: A wealth tax may begin as a symbol of fairness, but it can end as a tax on the very dynamism that makes prosperity and generous public services possible.
Magnus Henrekson is a professor of economics and senior research fellow at Stockholm’s Research Institute of Industrial Economics, where he was president for 15 years.
Until 2009, he held the Jacob Wallenberg research chair in the Department of Economics at the Stockholm School of Economics.
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