California Billionaire Tax Proposal Draws ‘Trojan Horse’ Warning
California’s top 1% of households pay about 40% to 50% of the state’s personal income tax revenue, according to the Hoover Institution. Proposition 40 would impose a one-time 5% tax on residents worth more than $1 billion, with supporters saying it could raise $100 billion. Opponents argue the measure could be expanded by lawmakers to affect other taxpayers, while backers say it targets only billionaires.
California depends heavily on a small set of wealthy households, so revenue moves with markets. In 2021, the richest 1% paid over $60 billion in state personal income taxes, the Hoover Institution says.
Prop 40 would impose a one-time 5% levy on assets above $1 billion. Its union sponsor projects $100 billion for health programs. Legislators could amend it with a two-thirds vote if changes fit its aims; courts have upheld and rejected similar revisions. Nobel economists back it; Gov. Newsom and some unions oppose it.
If enacted, Prop 40 could affect California’s wealthiest residents and the state budget, potentially raising funds for health programs while creating uncertainty for founders holding illiquid stakes. It may also influence other states’ tax debates. Because revenue depends on volatile markets, long-term effects on public services and investment remain uncertain. Voters and lawmakers may weigh fairness concerns against risks of capital flight or legal challenges.