California Health Tax Lawsuit Highlights Immigrant Care Costs

California is facing a legal challenge from its own medical and health insurance industries over a revised health-plan tax designed to maintain federal funding for Medi-Cal, the state's Medicaid program. The lawsuit, filed by the California Medical Association and the California Association of Health Plans, argues that the new tax structure violates Proposition 35, a voter-approved initiative that limits how much can be taxed on commercial health-plan enrollment. Critics warn the revised tax, set to take effect in 2027 if federally approved, could lead to increased premiums for privately insured Californians.

Governor Gavin Newsom's administration backed the redesigned tax to compensate for federal restrictions on the previous health-plan tax structure, which had generated billions of dollars for Medi-Cal. The state's healthcare costs for immigrants without legal status are estimated to be $12.4 billion in 2025, a significant factor contributing to the program's financial strain. Brian Blase, president of the Paragon Health Institute, stated that expanding coverage to unauthorized immigrants necessitates such tax adjustments.

The lawsuit's plaintiffs, though united against the tax, are not directly challenging the expenditure on healthcare for undocumented immigrants. Instead, they assert that the tax increase circumvents the restrictions imposed by Proposition 35 and limits how the generated revenue can be utilized. "California voters passed Proposition 35 and made it law. The state does not get to ignore that law simply because following the law is inconvenient," said Dustin Corcoran, CEO of the California Medical Association.

Health insurers estimate that the tax increase could raise premiums by approximately $100 per person annually, potentially costing a family of four an additional $400 per year. However, a spokesperson for Governor Newsom, Tara Gallegos, stated that the administration believes the tax increase is lawful and that the courts will agree.

According to H.D. Palmer, deputy director for external affairs at the California Department of Finance, the new tax measure was crafted to comply with the One Big Beautiful Bill Act. He explained that the state is presenting two potential tax tracks: one that mirrors the current system but might conflict with federal law, and another that adheres to the One Big Beautiful Bill Act by shifting costs to private plans. Palmer noted that if the federal government does not approve the tax structured similarly to the existing one, Proposition 35 could sunset as per current law.

The debate over the health-plan tax occurs against a backdrop of concerns about California's financial stability, driven in part by an ongoing exodus of residents and businesses. High living costs are frequently cited as a primary reason for people leaving the state, potentially impacting tax revenue, particularly income taxes on which California heavily relies.