California Billionaires Mobilize Record $612 Million to Defeat Wealth Tax, Exposing Elite Political Leverage

A surge of political spending by more than 70 current and former California billionaires has shattered state records, with nearly half directed at defeating Proposition 40, a one-time 5% wealth tax on residents worth $1 billion or more as of January 1, 2026. According to Politico's analysis, the total reaches $612 million across this year's elections, marking an unprecedented mobilization by Silicon Valley donors historically resistant to coordinated action.

The opposition centers on Building a Better California PAC, which has funneled over $300 million to block Prop 40 and advance counter-measures Propositions 41 and 42. Google co-founder Sergey Brin leads with at least $102 million, followed by former Google CEO Eric Schmidt ($40+ million), venture capitalist John Doerr ($40 million), Stripe CEO Patrick Collison, and crypto executive Chris Larsen. Other contributors include DoorDash's Tony Xu and multiple tech CEOs spanning the political spectrum.

This spending dwarfs support for the tax, which is backed primarily by SEIU-UHW with around $32-34 million. The measure would direct 90% of revenue to healthcare programs like Medi-Cal, amid federal funding concerns. Critics highlight tax flight: Brin reportedly relocated to Nevada, Larry Page to Miami, and others like Peter Thiel and Travis Kalanick have exited California to avoid potential liabilities estimated in the tens of billions.

The episode underscores how concentrated wealth enables outsized influence on ballot outcomes, with ad buys, signature gathering, and polling consuming hundreds of millions. Proponents argue it addresses inequality and funds essential services; opponents frame it as a threat to innovation and residency. As election day approaches on November 3, 2026, the campaign illustrates broader tensions in democratic processes where economic elites can reshape policy through financial scale unmatched by public or grassroots efforts.