In a significant turn of events, California voters have decisively defeated Proposition 40, a proposed one-time tax on billionaires in the state, as projected by NBC News on Monday. This outcome has sparked disappointment among progressive advocates who supported the measure, which emerged amid internal debates within the Democratic Party regarding its future direction leading into the next presidential election.
The tax initiative aimed to impose a 5% tax on individuals with net worths exceeding $1.1 billion, including a phased-in rate for those worth between $1 billion and $1.1 billion. The revenues generated by this tax were required to be allocated; with 90% earmarked for healthcare initiatives. Notably, the tax was proposed to be retroactive to January 1, 2026.
Although proponents viewed Proposition 40 as a potential milestone—the first enactment of a billionaire tax in the United States—many progressives criticized it. Dissent arose due to its one-time nature and limited focus on only healthcare, rather than establishing a sustained funding mechanism for broader social programs.
Concerns about the tax’s potential impact on California’s economy added to the controversy, with critics from both parties suggesting that wealthy residents might relocate out of state, leading to decreased tax revenue and exacerbating budget issues.
Noteworthy opponents included prominent Democrats such as outgoing Governor Gavin Newsom, who is eyeing a presidential run in 2028, and Governor-elect Xavier Becerra. Moreover, several large unions and advocacy organizations aligned with the Democratic Party also expressed their opposition to the measure.
In contrast, supporters like Senator Bernie Sanders and Representative Ro Khanna campaigned vigorously for Proposition 40, organizing several rallies throughout the state before the election.
The opposition campaign against Proposition 40 capitalized on substantial financial resources, outspending its proponents by an alarming ratio of 250 to 1 in advertising before the election, as reported by AdImpact, a media tracking firm. Major contributors to the “No on Prop. 40” campaign included the California Teachers Association and the California Medical Association, with additional backing from affluent figures, including Google co-founder Sergey Brin.
Despite this setback, advocates for the billionaire tax are expressing their determination to continue the dialogue around taxing wealthier individuals. “The billionaires may have bought themselves a temporary victory at the ballot box, but they have not bought themselves an end to this debate, and this is only round one,” stated Suzanne Jimenez, a Prop 40 sponsor and chief of staff at the Service Employees International Union.
Additionally, opposing groups strategically placed two initiatives on California’s ballot—Propositions 41 and 42—that would undermine Proposition 40. Proposition 41 sought to ensure that all new special tax measures underwent state auditor reviews, while Proposition 42 aimed to prevent new taxes on assets and impose restrictions on retroactive taxes.
Both propositions were designed to take effect simply by receiving one more vote than Proposition 40, illustrating the complex and contentious landscape of taxation policy in California.
