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California Billionaire Tax Defeated in Vote

California voters turned down Proposition 40, a ballot measure that would have imposed a one-time 5% wealth tax on residents with net worth exceeding $1 billion. The proposal, which would have applied retroactively to those living in the state on January 1, 2026, aimed to raise up to $100 billion over five years to fund programs such as Medi-Cal, the state’s Medicaid system.

Support for the measure came mainly from labor unions, who argued that the tax would affect a small group—just over 200 billionaires holding roughly $2 trillion in wealth—while generating substantial revenue for public healthcare and education. Opponents, including Governor Gavin Newsom, warned the tax could drive wealthy residents out of California and dampen economic growth.

Tech and venture-capital voices were vocal in the opposition. Nic Carter, a general partner at Castle Island Ventures, described the tax as a “sword of Damocles” over founders and suggested it would benefit fiscally conservative states like Florida and Texas if adopted elsewhere. He argued the tax would discourage venture-capital investment because founders would need to liquidate a large share of their equity to pay the levy.

Entrepreneur Jesse Tinsely, CEO of fintech holding Mainstreet, echoed similar concerns, saying the tax would strip founders of the ability to build billion-dollar companies from modest beginnings. He warned that the measure would force entrepreneurs to either raise external capital or relocate, limiting the path to success for self-made founders.

Economists Emmanuel Saez and Gabriel Zucman, the architects of the proposal, countered the fear that the tax would erode founder control. Saez explained that wealth-tax liability can be structured to separate economic ownership from voting rights, citing dual-class share structures that allow founders to retain control even with a small equity stake. He also noted that California currently collects about $3 billion annually from the billionaire class, roughly 1% of total state revenue projected for the 2025-2026 period.

Despite the projected revenue and the backing of labor groups, the measure failed to secure enough votes. The campaign highlighted a clash between progressive revenue goals and concerns about capital flight, leaving the state’s fiscal outlook unchanged.

Why it matters

The defeat of the billionaire tax signals continued uncertainty for California’s tech-driven revenue model and may influence future tax policy debates nationwide.

FAQ

What was Proposition 40?
A ballot measure proposing a one-time 5% wealth tax on California residents with net worth over $1 billion, retroactive to January 1, 2026.

How much revenue did supporters claim the tax could generate?
Up to $100 billion over five years, intended for programs like Medi-Cal.

Who opposed the measure?
Governor Gavin Newsom, tech investors such as Nic Carter, entrepreneur Jesse Tinsely, and other business leaders.

What did economists Saez and Zucman say about founder control?
They said the tax could be structured to preserve voting rights through mechanisms like dual-class shares.

Source: TechCrunch. See the original source for full details.