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California Billionaire Tax: Voters to Decide on 5% Net Worth Levy

California voters head to the polls on November 3 to decide on a proposed 5% net worth tax targeting the state's wealthiest residents. Boursier.com reported that the measure, known as Proposition 40 or the California Billionaire Tax Act,…

California Billionaire Tax: Voters to Decide on 5% Net Worth Levy

California voters head to the polls on November 3 to decide on a proposed 5% net worth tax targeting the state’s wealthiest residents. Boursier.com reported that the measure, known as Proposition 40 or the California Billionaire Tax Act, qualified for the ballot after gathering approximately 875,000 signatures.

The ballot measure applies to roughly 200 to 250 billionaires residing in the state, taxing both their income and financial assets such as stocks. Proponents estimate the levy could generate just over $100 billion if paid in full. The Syndicat des Métiers de la Santé (SEIU-UHW) sponsored the initiative, intending to channel the revenue into a healthcare system strained by federal funding cuts under Donald Trump’s administration.

Tech Executives Mobilize Against Proposition 40

High-profile technology executives have organized substantial opposition to the tax proposal. Peter Thiel, Sergey Brin, and Travis Kalanick have campaigned against the measure, with several critics relocating outside of California. Opponents have poured hundreds of millions of dollars into advertising campaigns to defeat the act.

Marc Zuckerberg pursued a different strategy after considering a departure from the state. During Meta’s quarterly earnings presentation, the company announced the creation of a new class of non-voting Class C shares—dubbed “Zuck” stock by American media. This corporate mechanism allows Meta to cover an estimated $10,000,000,000 to $12,000,000,000 tax liability for Marc Zuckerberg without diluting his voting control over the firm. Filings with the U.S. Securities and Exchange Commission show that in exchange, Marc Zuckerberg committed to maintaining his residence in California and keeping Meta’s corporate headquarters in the state for at least eight years.

Political Divisions Over the California Billionaire Tax Act

Elected officials remain split on the wealth tax. Gavin Newsom has opposed the measure, while Bernie Sanders voiced open support for the proposal during an October appearance in Los Angeles.

Passage remains uncertain. Over the past 15 years, California voters have rejected three similar taxation measures at the ballot box.

Frequently Asked Questions

Who qualifies for the California Billionaire Tax Act?

The tax applies specifically to the estimated 200 to 250 individuals in California whose net worth meets the billionaire threshold.

How much revenue is the tax expected to generate?

Proponents estimate the levy will yield slightly more than $100 billion if all affected billionaires pay the full assessment.

What is the designated use for the tax funds?

Sponsors intend to allocate almost all proceeds to shore up the American healthcare system following federal budget cuts.

A Wealth Tax on Billionaires? California Voters to Decide on Prop 40

About the author: Ibrahim Khalil - World Editor

PhD in International Relations, former UN press officer. Ibrahim has reported from 40+ countries, translating complex geopolitical shifts into clear, human‑focused narratives. “Ibrahim Khalil provides authoritative world news, from diplomacy to conflict zones, with on‑the‑ground insight.”