What is the purpose of Proposition 40?

Proposition 40 proposes a wealth tax, which would be the first of its kind in California, with revenue intended for public health insurance programs.

How would Proposition 43 change local tax proposals?

Proposition 43 would require a two-thirds supermajority vote to pass citizen-driven local tax proposals, instead of a simple majority.

California Voters Face Most Tax Measures Since 1994

Five of the 14 statewide ballot measures are tax-related, potentially reshaping state finances and public spending.

Flat illustration of ballot box, scroll, gold coin, redwood tree, scale

2026-10-05 · Updated 2026-10-05

California voters are being presented with the most tax-related ballot measures in nearly three decades, with five out of 14 statewide propositions focused on taxation. These measures could significantly alter the state's financial landscape and impact major public spending programs.

Proposition 40 proposes a wealth tax, which, if passed, would make California the first state to implement such a system. The revenue generated, estimated in the tens of billions, is earmarked for public health insurance programs facing potential federal funding reductions. Billionaires are opposing Proposition 40 with Propositions 41 and 42, which aim to nullify the wealth tax if they receive more votes than Proposition 40.

Another measure, Proposition 3, seeks to make permanent a temporary higher income tax rate for top earners. This rate, previously approved by voters twice, is set to expire in 2030 unless Proposition 3 passes. The tax typically generates between $5 billion and $15 billion annually, with a significant portion allocated to schools.

Proposition 43 aims to increase the voting threshold for citizen-initiated local tax proposals from a simple majority to a two-thirds supermajority. Business groups and anti-tax advocates have supported this type of measure for years. The outcome of these propositions could have a substantial effect on state and local government revenue and spending priorities.

FAQ

What is the purpose of Proposition 40?: Proposition 40 proposes a wealth tax, which would be the first of its kind in California, with revenue intended for public health insurance programs.
How would Proposition 43 change local tax proposals?: Proposition 43 would require a two-thirds supermajority vote to pass citizen-driven local tax proposals, instead of a simple majority.