California Proposition 40 Wealth Tax Fades in Statewide Polls
California voters head to the polls in November to decide on a first-in-the-nation wealth tax, but recent polling shows support for the measure in the mid-40s. Proposed last year by SEIU United Healthcare Workers West, Proposition 40 aims to address lost revenue from federal cuts by directing 90% of its funds to healthcare and 10% to food assistance or education-related programs. However, opponents have flooded the airwaves with ads framing the levy as an economic wrecking ball, creating a severe uphill battle for the “yes” campaign.
The political landscape surrounding the proposed tax has grown increasingly fractured. Opponents of the measure have collectively raised more than $187 million, dwarfing the roughly $32 million gathered by its supporters. Google cofounder Sergey Brin has emerged as the single largest donor to the anti-tax effort, contributing $102 million to a political action committee named Building a Better California. Other high-profile tech figures, including Eric Schmidt and PayPal cofounder Peter Thiel, have also donated to groups opposing the measure.
Billionaire Pushback and State Revenue Concerns
High-profile opponents argue that the wealth tax will drive wealthy residents and their assets out of California, ultimately shrinking the state’s tax base. The top 1% of California earners pay nearly 40% of the state’s personal income tax, which accounts for 61% of general fund revenues. Sergey Brin, who has a net worth near $260 billion and could face an estimated $13 billion tax bill under the proposal, told The New York Times in April that he fled socialism with his family in 1979 and does not want California to follow down the same path. State records indicate Brin now lists Nevada as his residence and purchased a home near Miami Beach, while Google cofounder Larry Page has similarly shifted assets out of state.
Gavin Newsom has also voiced opposition to Proposition 40, arguing that it would reduce investment in education, teachers, librarians, childcare, firefighting and police. Newsom, who has advocated for a national wealth tax instead, joins a chorus of business and labor groups arguing that the levy would damage the state’s tax base.
Propositions 41 and 42 Create a Triple Challenge for Supporters
Proposition 40 faces an additional threat from two competing ballot measures, Propositions 41 and 42, which could potentially invalidate the wealth tax if they receive more “yes” votes. Prop. 41 would require the state auditor to review proposed special taxes before they’re placed on the ballot and invalidate taxes that don’t comply with the state spending limit, while Prop. 42 would prohibit new state personal property taxes. Thad Kousser, a professor of political science at the University of California, San Diego, described the situation as a “triple challenge” that leaves proponents unsure of where the end zone is.

Chuck Bell, a retired election law attorney and tax expert, described Proposition 42 as a Rubik’s Cube designed to protect retirements, savings, and pensions from a potential vote to “double tax” your money. Backed by building trades, firefighters, and veterans’ groups, Prop. 42 provides a countermeasure that appeals to voters who fear the broader economic fallout of a wealth tax.
Frequently Asked Questions
How much revenue would Proposition 40 generate if approved?
Supporters of the ballot initiative estimate that the one-time 5% wealth tax could generate about $100 billion over five years for state programmes. Opponents counter that the money would only temporarily stem the budgetary bleeding.

What specific provisions make Propositions 41 and 42 dangerous to the wealth tax?
Propositions 41 and 42 include language that can void Proposition 40 if either competing measure passes and secures more “yes” votes. Specifically, Prop. 41 requires the state auditor to review proposed special taxes, and Prop. 42 would prohibit new state personal property taxes.
How do voters access official arguments for and against these measures?
Voters can review official arguments, analyses, and rebuttals through the California Secretary of State’s Voter Guide on Prop 40 and the California Secretary of State’s Voter Guide on Prop 42.
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