'We Need to Tax Billionaires': Author Gabriel Zucman on taxing wealth around the world

Watch on YouTube ↗  |  August 25, 2026 at 11:51  |  11:45  |  CNBC
Speakers
Gabriel Zucman — Paris School of Economics professor, UC Berkeley summer research professor, International Tax Observatory founding director, author
Joe Kernen — Co-Anchor, Squawk Box

Summary

Gabriel Zucman discusses his proposal for a global minimum wealth tax on billionaires, centered on an annual 2% tax on wealth above $100 million. He argues income taxes fail for the ultrawealthy because they can structure around taxable income, and that billionaire wealth is now large enough to matter for revenue and equality. Host Joe Kernen pushes back that the policy is punitive and too small relative to the federal budget. No specific securities or investable assets are recommended.

  • Gabriel Zucman advocates a new minimum tax based on wealth rather than taxable income.
  • His core proposal is a 2% annual tax on wealth above $100 million.
  • He argues billionaires can avoid income tax by reporting little taxable income.
  • He cites California Proposition 40, a one-time 5% billionaire tax, as a coming ballot measure.
  • Zucman frames the issue around equality before the law and rising billionaire wealth.
  • Joe Kernen challenges the idea as punitive and de minimis for the federal budget.
  • The discussion is fiscal-policy-focused and does not name specific tradeable securities.
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