California’s Prop 40 wealth tax on billionaires stirs debate ahead of 2026 vote

Photo: Gonzalo Facello / Pexels California’s Proposition 40, a one-time wealth tax targeting billionaires, continues to stir debate ahead of the November 2026 election. Recent reports indicate the top 1% of earners in California contributed nearly half of the state’s income tax revenue in 2021. This has led to concerns from opponents of Prop 40 that the proposed tax could eventually extend beyond billionaires. The measure, which aims to raise funds primarily for healthcare, has become a central issue in the state’s political landscape. The pricing for the prediction market on whether the billionaire wealth tax will pass currently stands at 29.5% for a YES outcome. This reflects a slight decrease from previous levels, suggesting that market participants may be weighing the impact of recent warnings and political discourse. The discussion around the tax has prompted significant attention from political figures and advocacy groups, with key actors like SEIU United Healthcare Workers West leading support. The Legislative Analyst’s Office estimates that the tax could generate tens of billions in revenue, although this projection depends on various factors including asset valuations and ...