California Billionaire Tax Debate: Two Economists Weigh Proposition 40

California's proposed 5% wealth tax on billionaires, known as Proposition 40, is debated here by UC Berkeley economics professor Gabriel Zucman and Stanford finance professor and Hoover Institution senior fellow Joshua Rauh. The discussion covers polling and prediction markets, whether billionaires would leave the state, the state's fiscal condition, and alternatives for raising revenue.

■ Proposition 40 and Public Support
- Polling outlook, prediction-market odds, and the spending campaign against the measure
- Arguments on whether a billionaire exodus would actually occur

■ California's Fiscal Situation
- Trends in Medicaid and general fund spending since 2019
- How many residents could lose health coverage if the measure fails
- Effects of last year's federal reconciliation bill on state funding

■ Tax Policy Alternatives and Broader Questions
- Federal versus state-level approaches, including taxes at death and step-up basis
- Disagreements over how much billionaires currently pay in taxes
- Comparisons with wealth concentration and taxation in France

■ Silicon Valley and Wealth Creation
- Views on whether successful founders should be celebrated or taxed more heavily

Those following U.S. tax policy, state ballot measures, or income inequality debates will gain a structured view of the main claims on both sides, along with concrete figures and examples used to support each position. It is useful to watch the full exchange before forming a view on how you would vote or advocate.