California’s Healthcare Costs Are Rising, and a Controversial Tax Plan Is Adding to the Tension

The California Medical Association and the California Association of Health Plans are suing to block a redesigned health plan tax backed by Gov. Gavin Newsom. Physician groups and insurance carriers usually argue against each other in Sacramento, which makes the joint filing unusual on its own.

Their complaint does not concern who Medi-Cal covers. It argues the tax conflicts with Proposition 35, a ballot measure California voters approved that caps how heavily the state can tax commercial health plan enrollment and restricts how the money can be spent.

Newsom spokeswoman Tara Gallegos told Fox News Digital that the state disagrees with those claims and expects the courts to agree with the state.
This article was created with the assistance of AI and reviewed by our editorial team for accuracy and clarity.

The lawsuit is not about immigrant coverage

Coverage for immigrants without legal status dominates the political argument around Medi-Cal costs. The Associated Press reported an estimated $12.4 billion spent on that coverage in 2025, and the figure appears in nearly every critique of the program’s finances.

The legal challenge sits somewhere else entirely. The medical association and the health plans are arguing about statutory limits on taxation, not about eligibility. Their filing rests on what Proposition 35 permits the Legislature to do with commercial enrollment and with the revenue collected from it.

That distinction matters for anyone following the case. A court ruling on Proposition 35 would settle a question about taxing authority, not a question about who qualifies for coverage.

How a health plan tax pulls in federal money

States run Medicaid jointly with the federal government, which reimburses a share of what each state spends. Taxing health plans lets a state raise its own spending figure, which in turn raises the federal match it collects. The money cycles back into the program.

California has used a tax on managed care organization enrollment this way for years, generating billions for Medi-Cal. The mechanism is legal and widely used, and federal rules have long placed limits on how narrowly a state can target such a tax.

Those limits are what changed. Narrow targeting is what California’s existing structure depended on, and narrow targeting is what Washington moved against.

About $400 a year for a family of four

Health insurers estimate the revised tax would add roughly $100 per person per year, on top of whatever ordinary rate increases they file. For a household of four people on a private plan, that works out to about $400 annually.

Brian Blase, president of the right-of-center Paragon Health Institute, cited the same $400 figure in comments to Fox News Digital, attributing it to California’s unwillingness to confront what he described as unsustainable spending.

Set against the $12.4 billion the Associated Press reported for 2025 immigrant coverage costs, the per-household number is small. It is also the number most privately insured Californians would actually notice, since it arrives through their own premium statement.

What the One Big Beautiful Bill Act changed

The federal law restricted how far states can tilt a health plan tax toward Medicaid insurers specifically. California’s existing structure leaned heavily in that direction, taxing Medi-Cal enrollment at a far higher rate than commercial enrollment.

Blase described the effect directly: the act limited California’s ability to target the tax just on Medicaid insurers, so the state is proposing to raise the tax on people holding private coverage instead.

That is the pivot point. Without the federal change, there would be no redesign, no premium estimate, and no lawsuit. The state’s current structure cannot continue past 2026 under the new rules.

Check which plan you actually hold

The proposed increase applies to commercial health plans, not to Medi-Cal enrollment. Anyone trying to work out whether this touches them should start by identifying which category their coverage falls into. Employer-sponsored plans and Covered California plans are commercial. Medi-Cal is not.

The second thing worth knowing is timing. The higher levy would begin in 2027, and only if federal regulators approve the structure. Nothing in the proposal changes a 2026 premium.

Insurers set rates through annual filings with state regulators. If the tax takes effect, it would show up as one component inside a filed rate, not as a separate line item on a bill.

Proposition 35 passed by a wide margin

The common assumption is that a ballot measure capping health plan taxes must have been a close, contested fight. Proposition 35 passed with overwhelming voter support, which is exactly why the medical association is leaning on it so hard.

California Medical Association CEO Dustin Corcoran framed the argument in those terms. Voters passed Proposition 35 and made it law, he said in a statement, and the state does not get to ignore that law simply because following it is inconvenient.

The measure constrains two things at once: how much the state can tax commercial enrollment, and what the resulting revenue can be spent on. Both constraints are in play.

The state submitted two proposals at once

H.D. Palmer, deputy director for external affairs at the California Department of Finance, told Fox News Digital the state is filing a two-track proposal with federal regulators. One track resembles the existing tax structure and may conflict with the new federal law. The other conforms to it by shifting more of the burden onto private plans.

Palmer added a consequence that has drawn less attention. If the federal government declines to approve the structure resembling the current tax, Proposition 35 may then sunset under current law.

That sunset provision means the ballot measure at the center of the lawsuit could expire on its own terms, depending on what Washington decides.

Millions more people left than arrived

One analysis found that nearly 10 million people moved from California to other states between 2010 and 2024, while just over 7 million moved in from elsewhere in the country. Cost of living ranks among the most commonly cited reasons for leaving.

The gap matters to state finances because California depends heavily on income tax receipts. When higher-earning residents relocate, the revenue base narrows, which is why outbound migration appears in arguments about the state’s fiscal outlook.

This context sits behind the tax debate rather than inside it. Neither the lawsuit nor the federal rule change turns on migration figures.

Everything hinges on a federal decision

The redesigned tax would raise the levy on private health plans beginning in 2027, and only if federal regulators approve it. As of the filing of the lawsuit, that approval had not been granted and the litigation had not been resolved.

So three separate outcomes remain open at once. Federal regulators decide which structure, if either, they will accept. A court decides whether the tax conflicts with Proposition 35. And Proposition 35 itself may sunset depending on the first decision.

Anyone holding a commercial plan in California can watch the federal approval step first, since the other two follow from it.