Voter Limits Defied? Doctors Sue Newsom Over Tax Hike

Doctors reviewing a clipboard — Photo: Dragon Images / Shutterstock

California doctors and insurers say Sacramento sidestepped voters and imposed an $8.85 monthly health plan tax that violates Proposition 35’s limits.

Story Highlights

Physicians and health plans sued to block a new $8.85 per-member tax they say violates Prop 35’s cap.
The lawsuit asks the California Supreme Court to halt SB 125 and force compliance with voter-approved rules.
State health officials claim Prop 35 permanently authorizes the existing tax framework, with federal approval still required.
No court has ruled on the merits yet; the case centers on whether lawmakers rewrote a voter initiative.

Petition Targets Alleged Violation of Voter-Approved Limits

California Medical Association and California Association of Health Plans filed a verified petition in the state Supreme Court. They argue Senate Bill 125 sets a commercial enrollment tax at $8.85 per member per month, far above Proposition 35’s $2.50 limit. The petition names top state finance and health officials and seeks to stop implementation. It also asks the court to require a tax submission that follows the initiative and federal rules. These claims are allegations, not yet findings by a court.

The groups say voters approved Prop 35 to protect health care funds and block diversions. They argue lawmakers cannot change core tax terms without going back to voters. California Medical Association has said the initiative created a protected stream to raise Medi-Cal payments and expand access. They now claim the new structure threatens that promise. The case is framed as a constitutional and statutory challenge, not a policy gripe, and focuses on separation of powers and voter consent.

What SB 125 Would Do and Why It Matters for Premiums

Legislative materials say SB 125 imposes an $8.85 per enrollee per month tax on both commercial and Medi-Cal plans from 2027 through 2029. That is the figure plaintiffs call illegal under the voter measure’s cap. The lawsuit warns that higher commercial-plan taxes flow to premium increases for families and small businesses. Press coverage confirms the suit’s core predicate: state approval of a structure plaintiffs say skirts the initiative and inflates costs for private coverage.

California doctors and insurers insist they supported a version of the tax that fits federal law and honors voter limits. They say they did not ask for the higher commercial tax cap placed into the mix. Their petition argues the state tried a workaround by sending a compliant option and a non-Prop 35 option for federal review. That move, they say, rewrites what voters approved and risks shifting costs onto working Californians in tough economic times.

State’s Defense: Permanent Authority and Federal Rules

California Department of Health Care Services counters that the Managed Care Organization tax is a federally allowed Medicaid tool. The agency says Proposition 35 permanently establishes state authority for the existing tax and sets how the money can be used under Assembly Bill 119. Officials note the state must still get federal approval before charging the tax in future periods. Agency decks and pages describe Prop 35 as permanent authorization modeled on AB 119 starting in 2027.

The voter guide analysis backs up that federal-approval caveat. It explains that Proposition 35 makes the existing health plan tax permanent beginning in 2027, but the state would still need federal sign-off. Nonpartisan fiscal analysts also underline that point. That is why the state has kept one eye on Washington as it designs the tax. The dispute now is whether federal constraints permit the $8.85 commercial rate under the voter-approved framework.

The Legal Clash: Do Lawmakers Need Voter Permission?

The heart of the case is simple. Plaintiffs say voters set limits that bind the Legislature. They claim SB 125 breaks those limits and should be halted until officials submit a plan that follows the initiative and federal law. State officials argue Prop 35 grants ongoing authority to shape the tax, within federal rules. The court must decide if the new rate structure amends a voter initiative without consent or stays inside the authorization voters approved.

Several facts remain unresolved. The court has not ruled on legality. The public record provided does not include the full SB 125 text alongside Proposition 35 for a side-by-side reading. The Attorney General and legislative counsel have not, in these materials, issued detailed rebuttals to the petition. Those gaps mean the legal outcome is open. What is clear is that families could shoulder higher premiums if the commercial tax rises fourfold over the voter-capped level.