VOTE YES ON PROP 40
Vote Yes on Prop 40. We can work for national change without making California’s response depend on when Washington might take action.
The facts at a glance
Prop 40 creates a state funding mechanism, not a federal tax. [1]
The measure can fund healthcare protection but cannot rewrite federal eligibility rules. [1][2]
U.S. Senator Bernie Sanders and U.S. Representative Ro Khanna have documented support for the California effort. [4]
The federal changes are already on California’s agenda
California’s Department of Health Care Services has published a transition plan for the federal law’s new eligibility and enrollment requirements. It warns that about 2 million Medi-Cal members are at risk of losing coverage because of those changes. That makes responding to these changes a practical task, not just a theoretical tax debate. [2]
Prop 40 creates a state revenue source which will be used to protect coverage and address funding reductions. It cannot repeal the federal Medicaid eligibility requirements, but it can give California additional resources to respond within the law. [1]
A national proposal and a state proposal are different choices
A federal wealth tax could have a different base, rate, duration, and legal structure. Favoring one does not establish that temporary state funding has no value. This ballot asks about the specific California measure, not every tax proposal someone might prefer.
The useful questions are concrete: Who pays under this tax? How is the money collected? What the funds will be used for and what oversight applies? Those questions can be answered from the proposal in front of voters. [1]
State action does not promise to solve every federal problem
The healthcare account can support coverage and providers, including steps to prevent or mitigate closures and service reductions. The statute also provides a reserve structure and annual allocation authority. [1]
Those tools are meaningful even though further healthcare policy decisions will remain. Supporting a funding source does not require pretending it is a permanent replacement for every federal dollar or every aspect of federal eligibility law.
There is a reason to base the tax on wealth
Ordinary income and accumulated wealth are different. The IRS’s explanation of capital gains illustrates why holding an appreciated asset is not the same as selling it and realizing a gain. Prop 40’s net-worth approach reaches a different base from an ordinary tax on wages. [1] [3]
That is the affirmative choice: ask extraordinary covered wealth to contribute, while dedicating proceeds to healthcare and related public needs. A proposal to use some other tax base should be evaluated on its own terms, not treated as proof this base cannot serve a public purpose.
National leaders also back California action
U.S. Senator Bernie Sanders and U.S. Representative Ro Khanna are named supporters in the campaign’s August 18 release. SEIU-UHW also published a supportive statement from U.S. Senator Chris Murphy connecting a contribution from the super-wealthy with repairing healthcare damage.[4][5]
Their involvement underscores that state action and national advocacy need not be opposites. The reason to vote Yes is the measure’s practical purpose; the documented support shows who has chosen to stand behind that effort.
Waiting is not a funding provision
No hypothetical replacement policy deposits money into the fund created by this measure. Voters can prefer an ambitious national reform and still choose a California tool with defined revenue and spending rules. [1]
Our choice is to take action: help protect access to care now while continuing to seek better decisions in Washington.
A few more answers
Does supporting a federal tax mean someone supports Prop 40?
Not automatically. Support for a national idea and support for this measure are different positions. We record an endorsement only when the source documents support for the California proposal.
Is preferring federal action misinformation?
No. It is a policy preference. This page explains the case for California action rather than assigning a false rating to a different political preference.
The people and institutions behind the evidence
Healthcare evidence publisher; no endorsement inferred
California Department of Health Care Services
Documents the federal changes and Medi-Cal coverage risks. No campaign endorsement is inferred. [2]
People and organizations backing a Yes vote
Campaign-reported support
U.S. Senator Bernie Sanders
Bernie Sanders supports California Proposition 40 (2026).
Named in the campaign’s August 18 supporter roster. [4]
Campaign-reported support
U.S. Representative Ro Khanna
Ro Khanna supports California Proposition 40 (2026).
The campaign documents his participation in the August 18 support rally. [4]
Support reported by SEIU-UHW
U.S. Senator Chris Murphy
Chris Murphy supports California Proposition 40 (2026).
SEIU-UHW publishes a supportive statement attributed to Chris Murphy. [5]
Keep reading
THE PAIRED PAGE
Why Billionaires Can Afford to Contribute More
Read the detailed page →
WHY VOTE YES
Help Keep Hospitals, Clinics and Emergency Rooms Open
Read the detailed page →
WHY VOTE YES
How Prop 40 Gives California a Way to Tax Billionaire Wealth
Read the detailed page →
CHECK THE EVIDENCE
Sources behind this page
Each reference identifies what it establishes. A cited agency or researcher is not automatically a campaign endorser.
01Proposition 40: text of proposed laws
California Secretary of State · 2026 voter guide · Proposed law
The actual proposed rules on taxpayer eligibility, valuation, payments, spending, and reporting. Tax payments begin in 2027; audit authority and special trust rules remain. Section 50310 governs possible amendments.
Where to look: Gov. Code §16355, PDF pp. 4–5; Rev. & Tax. Code §§50301, 50303–50304, 50308–50312, PDF pp. 5–13.
https://vig.cdn.sos.ca.gov/2026/general/pdf/prop40-text-proposed-laws.pdf
02California Releases Plan to Support Medi-Cal Members Through Federal Changes
California Department of Health Care Services · January 29, 2026 · Government healthcare evidence
About 2 million Medi-Cal members are at risk from federal eligibility and enrollment changes, some beginning in October 2026. Additional state funding does not itself repeal those federal eligibility rules.
Where to look:
https://www.dhcs.ca.gov/news/california-releases-plan-to-support-medi-cal-members-through-federal-changes-2/
03Topic no. 409: Capital gains and losses
Internal Revenue Service · Undated; checked September 10, 2026 · Official tax guidance
Explains sale proceeds, adjusted basis, and capital gains; used for the distinction between wealth and realized income.
Where to look: Opening explanation of capital assets and realization
https://www.irs.gov/taxtopics/tc409
04Rep. Ro Khanna, California Unions Unite on Stage in San Jose for Rally in Support of Prop 40
Yes on 40 · August 18, 2026 · Campaign report
The campaign’s report of the San Jose rally and participating supporters, including Ro Khanna. It also identifies support from Bernie Sanders and CIR/SEIU.
Where to look:
https://yeson40.com/rep-ro-khanna-california-unions-unite-on-stage-in-san-jose-for-rally-in-support-of-popular-prop-40/
05Billionaire Tax Act — Supporters Speak Out
SEIU-UHW · Undated; checked September 10, 2026 · Allied-organization support record
Publishes supportive statements from Robert Reich, Bernie Sanders, and Chris Murphy. These are SEIU-reported statements, not independent recordings verified here.
Where to look: Named supporter statements
https://www.seiu-uhw.org/billionaire-tax-act-supporter-content/
About this page. Published as a review draft by the Yes on 40 campaign, which advocates passage of the measure. Sources were checked on September 10, 2026. Research estimates, proposed legal provisions and endorsements are identified separately. This page is not individual tax or legal advice. Send corrections with the relevant source to the campaign’s press contact.
Vote Yes on Prop 40.
Vote Yes on Prop 40. California can protect care while the fight for better federal policy continues.