wealth tax

Will the Wealth Tax Fail?

Plus: Brazilian presidential elections, passing by Cuba, Taiwanese families who hate Arizona's schools, and more...

Liz Wolfe | 10.26.2026 9:30 AM

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California's experiment: Will California's proposed wealth tax, Prop 40, pass next week? And if it gets passed, will it end up actually costing the state money instead of generating revenue?

The basics: The proposal features a one-time 5 percent tax on people with net worths over $1 billion who lived in the state on January 1, 2026 (with the net worth amount calculated as of December 31, 2026). The idea for the snapshot date is presumably to prevent capital flight once the tax passes. The tax's supporters say the tax's revenues will amount to $100 billion and will fund California's health care system, which need to make up for federal Medicaid cuts.

Seven billionaires, representing 30 percent of the total billionaire wealth in the state, left California before January 1, 2026, when news of the possible tax broke. Peter Thiel, Larry Page, and Sergey Brin are among the deserters. The French economist Gabriel Zucman—an intense defender of the wealth tax—seems committed to the idea that this flight won't matter too much. He argues that while removing those seven brings down revenue estimates to $89 billion, adding in less-prominent small-time billionaires raises revenue to $115 billion.

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