2026-10-26 · contested story
Will the Wealth Tax Fail?
In November 2026, California voters are deciding Proposition 40, a first-in-the-nation one-time 5% tax on the net worth of roughly 200-250 billionaires residing in the state as of January 1, 2026. Backed by healthcare union SEIU-United Healthcare Workers West and economists Emmanuel Saez and Gabriel Zucman, the measure would raise an estimated $100 billion (critics say closer to $40 billion), with 90% earmarked to backfill federal Medicaid cuts from Trump's One Big Beautiful Bill Act. Billionaires led by Sergey Brin poured more than $300 million into opposition through the PAC 'Building a Better California,' while supporters raised roughly $32 million. The debate exploded into national prominence when Mark Zuckerberg negotiated a new class of Meta stock to pay a potential $11+ billion bill while committing to stay in California for eight years, and when Sen. Bernie Sanders and Rep. Ro Khanna introduced a parallel federal 5% billionaire wealth tax.
How each side frames it
left
"If the California billionaire tax passes, it is a historical turnaround showing that democracy can finally fight back against the growing wealth and power of billionaires"
"Are we destined to live in an oligarchic society begging for crumbs while our economic and political lives are controlled by a handful of the wealthiest people on Earth?"
"Decades of economic research show that billionaire 'flight' is rare, exaggerated, and often confused with tax avoidance through accounting maneuvers rather than physical relocation"
"Two myths down: no, billionaires won't all flee, and yes, they can pay their fair share without losing their companies."
"At a time of unprecedented income and wealth inequality, this legislation demands that the billionaire class in America finally pay their fair share of taxes"
center
"it's unclear how much money the ballot initiative would raise, how quickly the funding would become available, and how lawmakers would spend it"
"Among 105 respondents, 69.5 percent opposed the proposal, including 71.0 percent of economists and 85.0 percent of accountants. Lawyers were more supportive, with 60.0 percent favoring the tax."
"whether the tax is desirable also depends on values, including how big government should be, who should pay for it, and how many economic resources we are willing to use up in the process"
"it says changes in billionaire behavior, including leaving California, could reduce state income tax collections by less than $1 billion a year"
"Supporters say the wealth tax could raise up to $100 billion... But skeptics peg the revenue estimate at closer to $40 billion US and say it could also drive some billionaires out of the state"
right
"That's not a tax policy. That's an asset seizure dressed up as fairness."
"Because wealth taxes consistently fail to generate revenue, many of the countries that implement them swiftly abandon the experiment. Twelve European states had wealth taxes in 1990; only three have them today."
"What begins as a narrow, exceptional measure becomes more permanent for more people, justified at each step by the same fiscal desperation that produced a proven failure of a policy in the first place."
"I fled socialism with my family in 1979 and know the devastating, oppressive society it created in the Soviet Union. I don't want California to end up in the same place."
"Our guess is you're going to lose about $1,700 in income growth and about 230,000 jobs that won't be created over the next five years."
What each side left out
The left left out — covered by the City Journal & Finshots & TaxProf Blog & View from the Wing
- Historical record of European wealth-tax repeals (12 countries in 1990 down to 3-4)
- Valuation and administrability difficulties (e.g. Michael Jackson estate dispute)
- Expert surveys showing economists/accountants oppose the tax
- Constitutional apportionment challenge under Article I
The left left out — covered by the The Washington Post & Los Angeles Times
- Center-left/economist case that paper wealth cannot be directly converted to services
- LA Times economist Moretti's argument that future founders will locate elsewhere
The right left out — covered by the Finshots & Common Dreams & NPR
- Norway's wealth-tax collections grew ~25% from 2022-2025 despite departures
- Zuckerberg's SEC filing showing he is preparing to pay rather than flee
- Research (Piketty, Marquis/Romeo) that flight is often overstated
The right left out — covered by the Democracy Now! & Truthout & Common Dreams
- The underlying Medicaid funding shortfall and specific hospital/clinic closures driving the measure
- Polling showing majority of Americans across parties support taxing billionaires
The center left out — covered by the Common Dreams & HuffPost & KTVU
- Strong moral/democracy framing of inequality as existential threat
- Detailed critique of billionaires' low effective tax rates (0.2-0.26% of wealth)
What's actually true?
[verified] Proposition 40 would impose a one-time 5% tax on the net worth of Californians with assets exceeding $1 billion who were residents as of January 1, 2026, with ~90% of revenue going to healthcare.
[verified] The opposition PAC 'Building a Better California,' funded largely by billionaires led by Sergey Brin ($102M), raised roughly $300 million, far outspending supporters who raised about $32 million.
[verified] Mark Zuckerberg negotiated a new class of Meta non-voting stock allowing him to pay a potential ~$11 billion Prop 40 bill while committing to stay in California for eight years.
[verified] Twelve European countries had net wealth taxes in 1990; only three or four remain today, with many repealed over revenue, administration, and flight concerns.
[verified] California's nonpartisan Legislative Analyst's Office estimated the tax would raise 'tens of billions' and that billionaire departures could reduce income tax revenue by less than $1 billion a year.
[verified] Late polling (Citrin-POLITICO, Oct. 9-14) showed Prop 40 at 46% support vs 43% opposed among likely voters, short of the majority needed to pass.
[verified] Gov. Gavin Newsom opposes Prop 40 (a state-level wealth tax) but supports a federal 'minimum tax on billionaires,' arguing capital moves and the fight belongs at the federal level.
[verified] A survey of tax experts found 69.5% opposed Prop 40, including 71% of economists and 85% of accountants, while 60% of tax lawyers favored it — in contrast to six Nobel economists' endorsement.
The narrative clash
Whether billionaire capital flight is real or overstated
Left: Decades of economic research show that billionaire 'flight' is rare, exaggerated, and often confused with tax avoidance through accounting maneuvers rather than physical relocation
Right: With just these three relocations, 38 percent of California's billionaire wealth walked out the door... California stands to lose nearly as much as $4.5 billion per year from billionaire flight
Whether Norway's wealth-tax experience proves flight destroys revenue
Left: After the country raised its top wealth-tax rate from 0.85% to 1.1% in 2022, several billionaires and multimillionaires left... Yet Norway's wealth-tax collections grew by around 25% between 2022 and 2025, suggesting that the departures did not necessarily wipe out the tax's revenue potential
Right: When Norway raised its top wealth-tax rate by just one percentage point in 2022, economist Christine Blandhol documented a wave of business owners leaving for Switzerland... Norway lost tax revenue while the firms that business owners left behind, now run from a distance, saw their outputs decline
Whether the tax will actually remain one-time
Left: It is a one-time-only tax, to be levied exclusively on billionaires' current (i.e., 2025) net worth. Even if they move to Tasmania, they will still be liable for 5% of this year's net worth.
Right: Of Measure 40, Zucman said: 'This one-time tax is just the starting point of what could be.'
How much revenue the tax will raise
Left: Supporters say the wealth tax could raise up to $100 billion
Right: Smetters said he expects that the California measure will raise less than the $100 billion estimated by its backers because billionaire wealth in California... is relatively 'mobile'
115 sources analyzed
Vox The Washington Post Finshots Reason City Journal Common Dreams Los Angeles Times TaxProf Blog Reason City Journal The Boston Globe PBS NewsHour Americans for Tax Reform Reason City Journal MSNBC The Washington Post View from the Wing Just The News voz.us The Boston Globe PBS NewsHour Democracy Now! Reason City Journal Common Dreams The Washington Post Le Monde.fr Just The News The Federalist Common Dreams CBC MediaPost Just The News Fox News Vox PBS NewsHour Tax Foundation Reason Magazine The Federalist The Boston Globe Los Angeles Times The Capital Times RealClearMarkets Fox News Vox The Washington Post CalMatters New York Post Fox News Common Dreams NPR Yahoo Just The News The Federalist HuffPost PBS NewsHour FlowingData Fox Business Fox News MSNBC Los Angeles Times Independent Institute Orange County Register Fox News Common Dreams NBC News Pacific Research Institute The Telegraph The Federalist Vox NBC News The Lever The Boston Globe NPR Bloomberg Government News The Arkansas Democrat-Gazette Capital & Main Truthout MSNBC NBC News UA.NEWS U.S. News & World Report Annenberg Media Los Angeles Times KTVU The Washington Post Financial Times NBC News TheFutureParty Sacramento Bee BigGo Finance Business Insider Idyllwild Town Crier Los Angeles Times California DSA The Guardian LAist Al Jazeera AOL.com NBC News Newsroom | UCLA The Mercury News The Real Deal WIRED Pleasanton Weekly NBC Bay Area Mustang News Anthropic Times of San Diego Our Weekly The Press Democrat Fortune www.insideflyer.com ABC7 Bay Area