They have 0 sources for their data. They mostly cite themselves. You can download the data, but that’s just numbers, no telling where those are coming from. Absolute garbage.
I am appalled that these kinds of institutions get public funding.
pages 130 to 133 is about “Chapter 7. Global Taxation of Multi-Millionaires”
Searching for references does bring up something page 206, but again, more half of their sources are just themselves.
Actually the only two external sources are the world inequality report from 2022 and the “real time inequality” by the national bureau of economic research.
ReferencesAlvaredo,F(2018).WorldInequalityReport2018. HarvardUniversityPress.Alvaredo,Facundoetal.(2022).“Theinequality(orthegrowth) we measure:Datagapsandthedistributionofincomes”.In:WorldInequalityLab,WorkingPaperSeries2022/07.Blanchet,Thomas,EmmanuelSaez,andGabrielZucman(2022).“Real-timeinequality”.In:NationalBureauofEconomicResearch.Chancel,Lucas,IgnacioFlores,etal.(2025).DistributionalNational Accounts Guidelines:MethodsandConceptsusedintheWorldInequalityDatabase.https://wid.world/document/distributional-national-accounts-dina-guidelines-2025-methods-and-concepts-used-in-the-world-inequality-database/.Version3.0.Chancel,Lucas,ThomasPiketty,etal.(2022).WorldInequalityReport2022. HarvardUniversityPress.Gómez-Carrera,Ricardoetal.(2024).“GlobalInequalityUpdate 2024:NewInsightsfromExtendedWIDMacroSeries”.In:WorldInequalityLab,TechnicalNotes2024/11.Neef,TheresaandAnne-SophieRobilliard(2021).“HalftheSky?TheFemaleLaborIncomeShareinaGlobalPerspective”.In:WorldInequalityLab,WorkingPaperSeries2021/22.Nievas,GastónandThomasPiketty(2025).“WIDNationalAccounts Series:UpdatedandExtendedCoverage1800-2023”.I
They have 0 sources for their data. They mostly cite themselves. You can download the data, but that’s just numbers, no telling where those are coming from. Absolute garbage.
I am appalled that these kinds of institutions get public funding.
Yes, they do. The references section is on pages 130-133 in the report…
No?
https://wir2026.wid.world/
https://wir2026.wid.world/www-site/uploads/2026/04/World_Inequality_Report_2026.pdf
pages 130 to 133 is about “Chapter 7. Global Taxation of Multi-Millionaires”
Searching for references does bring up something page 206, but again, more half of their sources are just themselves.
Actually the only two external sources are the world inequality report from 2022 and the “real time inequality” by the national bureau of economic research.
References Alvaredo, F (2018). World Inequality Report 2018. Harvard University Press. Alvaredo, Facundo et al. (2022). “The inequality (or the growth) we measure: Data gaps and the distribution of incomes”. In: World Inequality Lab, Working Paper Series 2022/07. Blanchet, Thomas, Emmanuel Saez, and Gabriel Zucman (2022). “Real-time inequality”. In: National Bureau of Economic Research. Chancel, Lucas, Ignacio Flores, et al. (2025). Distributional National Accounts Guidelines: Methods and Concepts used in the World Inequality Database. https://wid.world/d ocument/distributional-national-accounts-dina -guidelines-2025-methods-and-concepts-used-i n-the-world-inequality-database/. Version 3.0. Chancel, Lucas, Thomas Piketty, et al. (2022). World Inequality Report 2022. Harvard University Press. Gómez-Carrera, Ricardo et al. (2024). “Global Inequality Update 2024: New Insights from Extended WID Macro Series”. In: World Inequality Lab, Technical Notes 2024/11. Neef, Theresa and Anne-Sophie Robilliard (2021). “Half the Sky? The Female Labor Income Share in a Global Perspective”. In: World Inequality Lab, Working Paper Series 2021/22. Nievas, Gastón and Thomas Piketty (2025). “WID National Accounts Series: Updated and Extended Coverage 1800-2023”. IDid you actually visit the link?
https://globaljusticeproject.wid.world/www-site/uploads/2026/06/GlobalJusticeReport_WebsiteVersion.pdf
Like, it’s a giant button that says “download the report”.
Ah, I read the other report. Heh.
Doesn’t solve the problem that they also don’t publish the data for that. But at least that pdf does have sources.