The future of California’s proposed billionaire tax is hanging in the balance as the deadline to secure a spot on the november ballot draws near. The initiative, aimed at imposing a one-time 5% tax on individuals with a net worth exceeding $1 billionhas sparked a fierce political battle that has divided the state’s Democratic coalition.
With the June 25 deadline looming, the odds of the initiative qualifying for the ballot have plummeted. Prediction markets now place the chances at a mere 31%a stark contrast to the 90% confidence seen at the start of the month. This dramatic shift underscores the growing skepticism among traders and political analysts about the initiative’s prospects.
Political Opposition Intensifies
The initiative, filed by the Service Employees International Union-United Healthcare Workers West (SEIU-UHW) in October 2026, has faced relentless opposition from Governor Gavin newsom and other influential figures. Despite submitting over 1.5 million signaturesalmost double the required threshold, the initiative’s proponents are under immense pressure to withdraw the proposal before the deadline.
Newsom, a vocal critic of the initiative, argues that California already relies heavily on high earners for revenue. He contends that the proposed tax could drive billionaires to relocate, potentially harming the state’s economy. The governor’s office has emphasized his support for California’s progressive tax system, which he believes does not unfairly burden low-income residents.
Divisions Within the Democratic Coalition
The billionaire tax initiative has exposed deep divisions within California’s Democratic coalition. While progressive advocates and some labor groups support the measure, more moderate factions are concerned about its economic implications. Newsom, who is widely seen as a potential presidential candidate in 2028, faces the challenge of balancing these competing interests.
In recent weeks, Newsom and his allies have assembled a broad coalition against the measure, including labor unions, health care organizations, and business groups. This coalition has raised significant pressure on SEIU-UHW to stand down. Suzanne Jimenez, the union’s chief of staff, has defended the initiative, stating that many individuals privately support it despite public opposition from some organizational leaders.
Billionaires Join the Fray
The initiative has drawn fierce opposition from California’s wealthiest residents, who have already spent millions of dollars to defeat it. Notable figures such as Peter Thielco-founder of PayPal and Palantir, and Eric Schmidtformer CEO of Google, have donated substantial sums to groups opposing the tax. Thiel, with a net worth of $27.9 billiondonated $3 million to the California Business Roundtable, while Schmidt contributed $1 million.
Some billionaires, including Google co-founders Larry Page and Sergey Brinhave already moved parts of their businesses out of state, citing concerns about the potential tax. This exodus has fueled debates about the initiative’s long-term economic impact on California.
Despite initial public support, with 50% of registered voters favoring the tax in a recent poll, the initiative’s momentum has waned. The rejection of a separate tax on high earners by San Francisco voters has further weakened its prospects. As the deadline approaches, the fate of California’s billionaire tax remains uncertain, with betting markets and political divisions suggesting a slim chance of it appearing on the November ballot.

