California Proposition 40 — Imposes One-Time Tax on Certain Taxpayers

Ballot measure · November 3, 2026

What it does
Imposes one-time tax of up to 5% on certain taxpayers with covered assets valued over $1 billion; covered assets include businesses, securities, art, collectibles, and intellectual property, but exclude real property and some pensions and retirement accounts. Allocates 90% of these tax revenues for health care, 10% for food assistance or education-related programs; prohibits using revenues to replace existing funding for these purposes. Exempts such tax revenues from constitutional requirements for school funding, budget reserves, and state spending limit. Summary of Legislative Analyst's estimate of net state and local government fiscal impact: Temporary state revenue increase from a new wealth tax on billionaires. These wealth tax revenues probably would add up to tens of billions of dollars spread over several years. Possible ongoing decrease of less than $1 billion per year in state income tax revenue collected from billionaires.
A YES vote means
The state would collect a one-time tax from billionaires equal to 5 percent of their wealth.
A NO vote means
The state would not collect a one-time tax from billionaires equal to 5 percent of their wealth.
Needed to pass
A simple majority
Put on the ballot by
citizen initiative

Official text: source

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Quick answers

What does a YES vote on California Proposition 40 mean?
The state would collect a one-time tax from billionaires equal to 5 percent of their wealth.
What does a NO vote on California Proposition 40 mean?
The state would not collect a one-time tax from billionaires equal to 5 percent of their wealth.
How many votes does California Proposition 40 need to pass?
A simple majority
Should I vote yes or no on California Proposition 40?
SpectrumVote doesn't endorse anyone or tell you how to vote. Read what a YES and a NO vote each do, and the official text, then decide based on what you want to happen.
When is the vote?
The general election is Tuesday, November 3, 2026. Early voting and mail-ballot deadlines vary by state; check your state or county election office.

Not sure how to decide? Read our nonpartisan guide to the California ballot.