Why Even Some Democrats Hate California’s Billionaire Tax Proposal

What It Covers

California's SEIU UHW union has gathered 1.5 million signatures to place a 5% annual wealth tax on approximately 200 billionaire state residents on the November ballot, targeting assets rather than income to fund Medicaid replacement healthcare spending, drawing opposition from both Republicans and prominent Democrats including Governor Newsom.

Key Questions Answered

• •Wealth vs. Income Taxation: This proposal taxes net assets — stocks, jewelry, vehicles, artwork — at 5% annually rather than taxing income, which is the standard mechanism for progressive taxation. This structural distinction is the core legal and political flashpoint, as it requires billionaires to annually declare and valuate all possessions, creating an unprecedented compliance framework in U.S. state tax law.
• •Revenue Earmarking Risk: Designating 90% of proceeds exclusively for healthcare replacement funding — offsetting federal Medicaid and ACA subsidy cuts from Trump's budget bill — alienates major unions like the teachers union and SEIU's umbrella organization. These groups oppose locking tax revenue into a single-purpose fund rather than the general fund, where elected officials allocate spending across education, infrastructure, and public safety.
• •Billionaire Residency Mobility: Several high-profile tech figures changed official California residency before the January 1 taxable-presence deadline — Sergey Brin relocated to Nevada, Larry Page to Florida, David Sacks to Texas, Peter Thiel to Miami. This demonstrates that wealth taxes with fixed residency cutoff dates create predictable behavioral responses, and policymakers should anticipate and model pre-deadline migration when projecting revenue.
• •Precedent Fear Drives Opposition: Billionaire resistance is disproportionate to a one-time 5% levy because the measure would establish legal and political precedent for taxing accumulated wealth rather than income flows. Opponents view this as an existential shift in the government's taxing authority, while proponents explicitly frame it as a paradigm change to reach wealth sheltered in non-income-generating assets.
• •Coalition Fragmentation Undermines Populist Taxes: Despite 70% Democratic voter support and over 1.5 million petition signatures, the measure lacks endorsement from California's most powerful unions and gubernatorial candidates. Taxes on the wealthy require broad institutional coalitions — not just public polling support — to survive well-funded opposition campaigns. Maverick-origin proposals without pre-built alliances face structural disadvantages regardless of popular sentiment.