California's billionaire tax gets the boot

California's proposed billionaire tax has officially struck out with voters. The AP called the race earlier this week, with Proposition 40 trailing by a 52.5%-47.4% margin following a heated campaign that divided some of the state's wealthiest residents and political leaders.

A look inside the ballot: Prop 40 called for a one-time 5% tax on California billionaires' wealth, including stocks, business holdings, and other assets, while generally excluding real estate and certain retirement accounts.

Supporters estimated the tax could generate ~$100 billion over five years, with 90% going toward healthcare services facing federal funding cuts and the remaining 10% supporting education and food-assistance programs.

Why the vote was so close

The proposal sparked a debate over whether taxing California's wealthiest residents would help address the state's healthcare funding challenges, or instead create new economic problems.

• Those in favor of the tax—including California's Democratic Party—noted that billionaires are able to grow their fortunes through stocks and other investments without paying taxes on those gains until the assets are sold, and argued that taxing this accumulated wealth would make the tax system fairer.
• They also argued that the billionaire tax would help offset recent federal healthcare cuts, which they framed as being used to help pay for recent tax cuts.

On the flip side: Opponents of Prop 40, who raised ~10x as much money as supporters, voiced concerns about the complexity and potential economic consequences of taxing billionaires' accumulated wealth.

• Critics warned the tax could drive some of California's richest residents elsewhere, potentially costing the state billions of dollars in future tax revenue, investments, and business activity.
• The opposition included Gov. Gavin Newsom, who argued that a state-level wealth tax would put California at an economic disadvantage.
• Planned Parenthood and the California Medical Association also raised concerns about how the state revenue would be allocated, and how it would impact the state's budget.

The age effect: While California voters rejected the billionaire tax overall, younger voters were more receptive to the idea. According to the AP Voter Poll, a majority of voters under 30 supported Prop 40, while ~70% of voters aged 65+ opposed it.

Looking ahead…The healthcare workers' union behind Prop 40 has pledged to pursue another billionaire tax in 2028 if California lawmakers fail to address the state's healthcare funding shortfall. However, those plans could face a hurdle from Prop 42, a separate 2026 ballot measure that would restrict future taxes on financial assets, which is narrowly leading as of the latest reported results.

📊 Flash poll: Would you support or oppose a one-time 5% tax on billionaires' wealth in your state?

• Support
• Oppose
• Unsure/other