Billionaires and Economists Clash Over California's Proposed Wealth Tax

Billionaires and Economists Clash Over California's Proposed Wealth Tax

Economists debated whether Proposition 40’s one-time 5 % levy on billionaire net worth would generate up to $100 billion in revenue or cost the state billions, while billionaire donors continued to pour millions into the campaign against the measure, NPR reported. Earlier, Google co-founder Sergey Brin contributed $102 million to the anti-tax group Building a Better California, which has spent more than $300 million, according to Fortune. POLITICO. eu noted that more than 70 California billionaires together donated a record $612 million to opposition groups.

The New York Post quoted Don Hankey, who said he left California before the residency deadline, calling the tax economically unsound. Fortune also reported that some economists argue California could double property-tax revenue by matching Texas rates, a larger boost than the proposed billionaire tax. The Los Angeles Times warned that the measure could affect owners of several major sports franchises, potentially influencing ticket prices and the state economy. The Guardian said the ballot will be decided by voters in the upcoming midterm election, with unions and some Democrats supporting the tax.

Acteurs

Sergey Brin Building a Better California Eric Schmidt John Doerr Patrick Collison Chris Larsen Frank Slootman Tom Steyer Rob Stutzman Abby Lunardini Debru Carthan

Lieux

California, United States Sacramento, California, United States Silicon Valley, California, United States
Verdict global: Partiellement confirmé Confiance: 75% Affirmations: 3
Résumé

All three claims were partially confirmed. More than 70 California billionaires contributed a total of $612 million to groups opposing Proposition 40 as of October 28, 2026. Researchers indicated on October 31, 2026, that aligning California's residential property tax rate with Texas's could potentially double property-tax revenue. Proposition 40 is described as a ballot measure proposing a one-time 5% tax on California billionaires intended to fund health-care and other services.

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Articles

2 novembre 2026
4 au total
Billionaire tax puts California’s economic future before midterm voters
Billionaire tax puts California’s economic future before midterm voters

Fox Business • 02 nov. 19h58

Proposition 40 proposes a one-time 5% tax on assets over $1 billion, sparking debate over its potential $100 billion revenue versus possible loss of billionaire residents and income tax base.

Crédibilité 78% Manip. 32% Droite
Planet Money : NPR
Planet Money : NPR

NPR • 02 nov. 11h30

Economists debate whether Proposition 40’s one-time 5% tax on billionaire net worth will raise up to $100 billion or cost the state billions, while billionaires have already spent millions to oppose it.

Crédibilité 88% Manip. 12% Centre
Sergey Brin is building a political org that will last beyond his $102 million fight against Prop 40
Sergey Brin is building a political org that will last beyond his $102 million fight against Prop 40

Fortune • 02 nov. 07h00

Google co-founder Sergey Brin has contributed $102 million to Building a Better California, a group that is spending over $300 million to defeat Proposition 40 and support other ballot measures, while attracting additional billionaire donors.

Crédibilité 88% Manip. 12% Centre
Billionaire Don Hankey slams Prop 40 after leaving California
Billionaire Don Hankey slams Prop 40 after leaving California

New York Post • 02 nov. 02h43

Don Hankey, founder of the Hankey Group, said he left California before the residency deadline for Proposition 40 and called the proposed billionaire tax economically unsound, joining other critics who warn it could drive wealth out of the state.

Crédibilité 78% Manip. 24% Droite
31 octobre 2026
2 au total
If California matched Texas on taxing property, it would raise more revenue than the billionaire tax
If California matched Texas on taxing property, it would raise more revenue than the billionaire tax

Fortune • 31 oct. 20h41

Researchers say that aligning California's residential property tax rate with Texas's could double property-tax revenue, offering a larger fiscal boost than the proposed one-time billionaire tax.

Crédibilité 72% Manip. 32% Centre
Proposed billionaire tax could impact California sports teams
Proposed billionaire tax could impact California sports teams

Los Angeles Times • 31 oct. 10h00

A ballot measure that would levy a one-time 5% tax on billionaire assets may apply to several California sports team owners, prompting debate over its impact on ticket prices and the state’s economy.

Crédibilité 72% Manip. 32% Centre
30 octobre 2026
1 au total
Billionaire tax: how a union leader’s ‘crazy’ idea became the defining issue of California’s midterms
Billionaire tax: how a union leader’s ‘crazy’ idea became the defining issue of California’s midterms

The Guardian • 30 oct. 15h02

Proposition 40, a ballot measure proposing a one-time 5% tax on California billionaires to fund health-care and other services, faces intense opposition funded by tech moguls and support from unions and some Democrats as the midterm election approaches.

Crédibilité 72% Manip. 32% Gauche
28 octobre 2026
1 au total
Billionaires shatter spending record to fight California wealth tax
Billionaires shatter spending record to fight California wealth tax

POLITICO.eu • 28 oct. 15h22

More than 70 California billionaires have contributed a combined $612 million to groups opposing Proposition 40, a proposed 5% wealth tax, marking the largest single-issue spending by the state’s ultra-rich.

Crédibilité 78% Manip. 27% Centre