California Voters Rejected the Proposed One-Time Billionaire Wealth Tax

California voters have rejected Proposition 40, a proposed one-time 5% wealth tax on residents with net worths exceeding $1 billion. The measure would have applied to individuals living in California on January 1, 2026, with their wealth assessed as of December 31. However, certain assets would have received different treatment under the proposal.

Unlike an income tax, a wealth tax applies to a person’s accumulated assets rather than annual earnings. Therefore, even someone earning relatively little in a year could have owed the tax because of their overall wealth. Under Proposition 40, eligible billionaires would have paid the tax in 2027, either in a lump sum or over five years with an additional charge for installments. The proposal was expected to affect roughly 200 California billionaires. Its defeat means the state will not receive the proposed revenue, leaving questions about future healthcare funding and billionaire taxation unresolved.

Why Gavin Newsom and Silicon Valley Billionaires Opposed California’s Wealth Tax

Governor Gavin Newsom opposed Proposition 40, warning that the proposed tax could drive wealthy residents out of California and reduce state revenue. The state’s Legislative Analyst’s Office estimated that the resulting loss in annual income tax revenue could be less than $1 billion. Google co-founder Sergey Brin became a major financial backer of the opposition, contributing at least $102 million to an anti-tax committee. CalMatters reported that ultra-wealthy opponents contributed approximately $378 million to defeat the measure, making the opposition campaign one of California’s most expensive.

Critics also warned that the tax could discourage investment, affect technology startups and make entrepreneurs less willing to establish businesses in California. Newsom and other opponents also questioned whether a one-time wealth tax could provide lasting healthcare funding or solve the state’s wider budget challenges. They argued that California needed a more sustainable source of public revenue rather than relying on a single tax payment from billionaires.

Proposition 40 Aimed to Protect Healthcare Funding Through a One-Time Tax

The Service Employees International Union-United Healthcare Workers West sponsored Proposition 40 to help protect California’s healthcare services from federal funding cuts. Its supporters included Senator Bernie Sanders and Representative Ro Khanna. The proposal would have directed 90% of its revenue toward healthcare and the remaining 10% toward education and food assistance. The union projected that the tax could raise roughly $100 billion over five years.

With voters rejecting Proposition 40, California will not receive the proposed tax revenue. Union president Dave Regan has indicated that the group could introduce another billionaire tax proposal in 2028 if lawmakers fail to secure alternative healthcare funding. The defeat highlights the challenges of taxing billionaire wealth at the state level and leaves California facing questions about how to protect essential public services amid federal funding cuts and growing wealth inequality.

Web Resources On California Voters Reject Proposed Billionaire Wealth Tax

1. The Guardian : California voters fail to pass proposed one-time tax on billionaires’ wealth
2. AP News : California voters reject measure to tax the wealth of billionaires.
3. ABC News : California’s Prop 40 ‘billionaires’ tax’ measure is rejected, AP projects .