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California’s Proposition 40, a ballot measure aimed at slapping a 5% wealth tax on billionaires to raise $100 billion for healthcare, has decisively failed. With 55.2% of voters rejecting it on November 3, 2026, the initiative’s proponents suffered a clear defeat. Focus reported that the measure, supported by economists Gabriel Zucman and Emmanuel Saez, was defeated by a margin of more than ten percentage points, with over 61% of expected votes counted at the time.
The 100 Billion Dollar Mirage and the 540 Billion Dollar Exodus
The core promise was simple: tax the ultra-rich to fund public services. The projection was $100 billion. The reality, as a new study shows, is a potential fiscal catastrophe. The measure was designed to affect roughly 200 individuals whose primary residence was in California as of January 1, 2026. Yet, the threat of the tax, and the years of political hostility towards wealth, had already triggered an exodus. By the time of the vote, seven of the state’s wealthiest residents had already departed or were actively planning to leave, taking a combined fortune of $540 billion with them.
That $540 billion figure is no minor number. It represents nearly 30% of the total wealth base the tax was intended to capture. The architects of the tax failed to account for a fundamental economic principle: capital is mobile. There are only tax codes. For a billionaire, moving from California to Texas or Florida is a logistical matter, not an existential one.
Tax Revenue Falls Short of Promise
A study by economists Benjamin Jaros and Joshua Rauh, published in October 2026, provides a cold, hard reality check. Factoring in the flight of capital and the inevitable legal battles, the actual revenue from the tax would have been a mere $28 to $36 billion—far short of the $100 billion promised.
But the financial hemorrhage doesn’t stop there. The study introduces a more insidious figure: the long-term loss of annual income tax revenue. The seven departing billionaires, along with others who might follow, were contributing between $3.3 and $5.8 billion annually to California’s coffers from income taxes alone. Their departure could trigger a permanent annual revenue loss of between $1 and $3.5 billion. When these future losses are discounted to their present value, the net fiscal impact of the proposed tax becomes a staggering negative $38.9 billion. In 85% of the study’s simulations, the tax created a net loss for the state.
What This Means for California’s Tax Base
California’s current top income tax rate is already a steep 13.3%, one of the highest in the nation, and is levied on top of federal taxes. This creates a powerful incentive for high earners to seek jurisdictions with a more favorable climate. The political narrative, amplified by figures like Senator Bernie Sanders—a multimillionaire himself who has been railing against billionaires for years—further poisoned the well. The message was clear: success is not welcome here.
Taxation Leads to Population Drain
The California experiment is not occurring in a vacuum. It mirrors a pattern seen across the globe where punitive taxation of the wealthy has led directly to population and capital drain. In 2013, France implemented a 75% supertax on high earners. The result was a 46% increase in the number of French citizens with incomes over €300,000 emigrating the following year.
Norway offers another stark example. After increasing its wealth tax to as high as 1.1%, the country saw 515 individuals with fortunes exceeding ten million kroner leave in 2022 and 2023—more than double the number in previous years. And in the UK, after announcing the removal of tax privileges for non-domiciled wealthy foreigners, officials projected a net loss of 16,500 millionaires in 2025, up from 10,800 in the prior year. The data is unequivocal: when the cost of staying becomes too high, the wealthy can and will go.
The 30-Second Verdict on Wealth Taxes
You cannot tax what has already left.
Entrepreneurs Move to Other States
The most prominent entrepreneur who left California was Elon Musk. He moved in 2020 to Texas and succeeded in driving away the SpaceX founder with its regulatory fury. The cases of Google co-founders Larry Page and Sergey Brin, and investor Peter Thiel, have become emblematic of the state’s self-inflicted wound.
It’s a critical distinction to make: the departure of a billionaire does not necessarily mean their companies vanish overnight. However, it guarantees that their future investment income, capital gains, and employment taxes will flow to a different state. The tax, designed to make the rich pay, ends up making everyone else pay more.
“Tax policy doesn’t operate in a vacuum. It signals intent. When a state’s political discourse is openly hostile to wealth creation, it creates a powerful incentive for the creators of that wealth to vote with their feet. The calculus is not about patriotism; it’s about arithmetic,” stated Dr. Rainer Zitelmann, a historian and sociologist, in his analysis of the phenomenon.
Political Posturing Creates Deficit
The failure of Proposition 40 was not a single event but the culmination of years of anti-wealth political campaigning. The constant threat of new taxes, the demonization of success, and the ever-increasing regulatory burden created an environment of uncertainty.
The state’s ambition was to add $100 billion to its treasury. Instead, its years of political posturing may have engineered a permanent structural deficit. The rich, as the evidence from California and the world shows, can leave. The rest of the population, however, must stay and pay the bill. The true cost of Proposition 40’s failure may not be measured in lost revenue, but in the capital that was already gone long before the votes were cast.
