California Voters Reject Landmark Billionaire Wealth Tax
Sacramento, Saturday, 7 November 2026.
California voters defeated Proposition 40’s proposed billionaire wealth tax after opponents spent over $333 million, simultaneously approving Proposition 42 to constitutionalize protections against future levies on investment assets.
A Decisive Rejection of Proposition 40
California voters delivered a resounding rejection of Proposition 40 on 3 November 2026, with 53.9% opposed and 46.1% in favor by the time 71.1% of ballots were counted, according to NBC News projections [5]. The measure would have imposed a one-time 5% tax on the net worth of billionaires in the state, marking a historic first in U.S. taxation policy. Decision Desk HQ’s analysis corroborated these results, showing 54% against versus 46% in favor with 76% of votes counted by 8:51 p.m. EST [1]. The defeat represents a significant setback for advocates of progressive taxation, including labor unions and segments of the Democratic Party, who had positioned Proposition 40 as a potential revenue source for state healthcare programs and social services [2][1].
The Opposition’s Financial Edge
The measure’s opponents, led by California’s billionaire class and tech executives, outspent supporters by a substantial margin. Opponents contributed over $333 million to the nonprofit Building a Better California, dwarfing the financial resources of Proposition 40’s backers [1]. This financial advantage allowed opponents to mount a sophisticated campaign that framed the tax as a threat to economic stability, warning of potential capital flight and job losses. The campaign’s messaging resonated with voters concerned about California’s ongoing budget deficits, which have persisted since 2025 [2]. The Legislative Analyst’s Office had projected that California could have collected tens of billions of dollars annually from the roughly 200 billionaires residing in the state, but critics argued that the tax would have been unconstitutional and economically counterproductive [1].
Governor Newsom’s Contrarian Stance
Governor Gavin Newsom (D), a term-limited executive who had previously expressed support for a federal billionaire tax, publicly opposed Proposition 40. In a June 2026 Substack post, Newsom criticized the measure for dedicating nearly all projected revenue to healthcare, writing, ‘There is nothing for housing, nothing for childcare, nothing for public safety workers who must answer 911 calls, and nothing for our public universities that have powered California’s economy for a decade’ [2]. His stance highlighted a rift within the California Democratic Party, which was officially neutral on the measure. While the California Democratic Party and major labor unions such as the AFL-CIO and Teamsters supported Proposition 40, Newsom’s opposition underscored broader tensions within the party over fiscal priorities and the role of wealth taxes in addressing inequality [2].
Proposition 42: A Countermeasures Victory
In a parallel victory for wealth holders, California voters approved Proposition 42, which amends the state constitution to prohibit new taxes on personal property, including business holdings, intellectual property, and financial assets. With 52.6% in favor against 47.4% opposed, Proposition 42 passed as votes were counted on 3 November 2026 [3][5]. The measure effectively constitutionalizes protections against future wealth taxes and limits the legislature’s ability to apply new taxes retroactively, except during declared budget emergencies [2][3]. Nathan Click, spokesperson for the Yes on 42 campaign, framed the victory as a defense of Californians’ ‘hard-earned life savings from double taxation’ [2]. The passage of Proposition 42 complicates future efforts to implement progressive taxation policies in the state, as it requires a two-thirds legislative supermajority to amend or repeal constitutional provisions [3].
Broader Implications for Tax Policy in the United States
The dual outcomes in California reflect a broader national divide over taxation policy. While voters in Washington state reinforced a new 9.9% millionaires’ tax by rejecting Measure 645 in November 2026, California’s rejection of Proposition 40 and passage of Proposition 42 signal a more conservative approach to wealth taxation in high-cost states [4]. The results have emboldened opponents of progressive taxation, with tax advocates vowing to escalate their efforts at the federal level despite the California setback [2]. Rep. Ro Khanna (D-Santa Clara), a leading supporter of Proposition 40, vowed to ‘call out these economic royalists’ and push for federal taxation of billionaires, while labor leader Lorena Gonzalez acknowledged that the battle was not yet over [2]. The legislative landscape in California now features both a prohibition on future wealth taxes and permanent high-income tax brackets for households earning over $371,000 annually, following the passage of Proposition 3 [4][5].
The Road Ahead: Certification and Certification Deadlines
While the November 2026 election has concluded, the formal certification of results remains pending under California law. County election officials have up to 30 days following Election Day to complete vote counting, auditing, and certification, with the Secretary of State scheduled to post certified results by 11 December 2026 [6]. As of 7 November 2026, over 8 million ballots had been cast in California, with approximately 61% counted by the morning of 5 November [7]. The delay in finalizing results is standard in California due to its reliance on mail-in and provisional ballots, but the outcome of Proposition 40 and Proposition 42 is now considered definitive [6][7][alert! ‘Preliminary results may shift slightly during certification, but the direction of outcomes is not expected to change.’].