The Global Justice Platform: Distributional Pathways, the Global Justice Fund and the New Democratic International Order, 2026-2100

Philipp Bothe, Lucas Chancel (), Jonas Dietrich, Paula Druschke, Cornelia Mohren, Gaston Nievas, Moritz Odersky, Thomas Piketty () and Anmol Somanchi
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Philipp Bothe: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Lucas Chancel: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris, CRIS - Centre de Recherche Internationale pour la Sante - UJZK - Université Joseph Ki-Zerbo de Ouagadougou = University of Ouagadougou
Jonas Dietrich: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Paula Druschke: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Cornelia Mohren: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris, CRIS - Centre de recherche sur les inégalités sociales (Sciences Po, CNRS) - Sciences Po - Sciences Po - CNRS - Centre National de la Recherche Scientifique
Gaston Nievas: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Moritz Odersky: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Thomas Piketty: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris
Anmol Somanchi: WIL - World Inequality Lab, Institut d'Études Politiques [IEP] - Paris

World Inequality Lab Working Papers from HAL

Abstract: We analyze distributional pathways and institutional changes that are compatible with global socioeconomic convergence and the preservation of planetary habitability over the 2026-2100 period. In our benchmark scenario, a Global Justice Fund (GJF) supports massive investment in climate mitigation and adaptation, infrastructures, education and health expenditure (up to 8-10% of world GDP per year between 2030 and 2060) and is financed by the global rich, via a mixture of a global wealth tax, a world sovereign wealth fund and a global income tax. All countries reach 60k euros (2025 PPP) in per capita GNI in 2100, close to current levels in high income countries, but with a sharp reduction in working hours and a large shift toward immaterial sectors (especially education and health). Within-country income and wealth scales are sharply compressed (1 to 5 for income, 1 to 10 for wealth), in line with long-run trends in Western & Nordic Europe. We find that a vast majority of the population -about 95-98% in the Global South and 85-95% in the Global Northbenefits from rising monetary incomes throughout the transition period 2026-2100. This fraction rises to over 99% in all countries if the value of free time and planetary habitability are taken into account. It drops substantially for segments of the population who do not share these valuations, potentially implying fierce political opposition from beyond just the ultra-rich. The platform also includes a major democratization of the international economic and monetary system, including the governance and voting rights applied in Bretton Woods institutions, and ending the exorbitant privilege of richcountry currencies. The declining hegemony of existing powers and the emergence of a multipolar world order make the rethinking of global economic governance under climate constraints both necessary and urgent. This paper offers one quantitatively and institutionally grounded, if necessarily incomplete, step in that direction. * This paper includes background material for the Global Justice Report. All series are available online together with a detailed replication package including raw data sources, methods and codes (GlobalJusticeProject.wid.world).

Date: 2026-04
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