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A Global Minimum Wealth Tax: Some Issues of Economics and Implementation

Author

Listed:
  • Robin Boadway

    (Queens University, Kingston, Canada., CESifo)

  • Michael Keen

    (UTokyo - The University of Tokyo, CERDI - Centre d'Études et de Recherches sur le Développement International - IRD - Institut de Recherche pour le Développement - CNRS - Centre National de la Recherche Scientifique - UCA - Université Clermont Auvergne, University of Oxford, Institute for Fiscal Studies - University of Manchester [Manchester])

Abstract

Noting that many ultra-high net worth (UHNW) individuals pay very low effective rates of personal tax on their incomes, Zucman (2024, 2025) proposes a minimum wealth tax which ensures that UHNWs incur personal taxes of at least 2% of their worldwide wealth. This note discusses some anomalies of his hybrid income-and-wealth tax scheme, recounts some complexities in implementing and propagating it on a worldwide basis, given that individual wealth includes assets in many countries, and argues that there are other and no less appealing paths to much the same end, including taxing capital gains on accrual and enhancing inheritance taxation.

Suggested Citation

  • Robin Boadway & Michael Keen, 2026. "A Global Minimum Wealth Tax: Some Issues of Economics and Implementation," Post-Print hal-05563449, HAL.
    • Handle: RePEc:hal:journl:hal-05563449
    DOI: 10.54648/taxi2026008
    as

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