Thomas Piketty
@thomaspiketty.bsky.social
Professor at EHESS & PSE
Co-Director, World Inequality Lab
inequalitylab.world | WID.world
http://piketty.pse.ens.fr/
Co-Director, World Inequality Lab
inequalitylab.world | WID.world
http://piketty.pse.ens.fr/
Thank you to all WID fellows for their inputs, and in particular to @ricardo-eco.bsky.social, who wrote and coordinated the report, as well @lucaschancel.bsky.social & @rowaida96.bsky.social who edited it.
This report benefited from the support of the @undp.org and the European Union.
This report benefited from the support of the @undp.org and the European Union.
December 10, 2025 at 10:24 AM
Thank you to all WID fellows for their inputs, and in particular to @ricardo-eco.bsky.social, who wrote and coordinated the report, as well @lucaschancel.bsky.social & @rowaida96.bsky.social who edited it.
This report benefited from the support of the @undp.org and the European Union.
This report benefited from the support of the @undp.org and the European Union.
Building on the 2018 and 2022 editions, the #WIR2026 draws on the contributions of over 200 scholars from all over the world affiliated with the World Inequality Lab and contributing to the World Inequality Database wid.world - the largest database on the historical evolution of global inequality.
Home - WID - World Inequality Database
Home The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international academic consortium.
wid.world
December 10, 2025 at 10:24 AM
You can read the World Inequality Report 2026 in 10 different languages: English, Arabic, Chinese, French, German, Hindi, Portugese, Spanish, Russian, and Thai
wir2026.wid.world/download/
wir2026.wid.world/download/
December 10, 2025 at 10:24 AM
You can read the World Inequality Report 2026 in 10 different languages: English, Arabic, Chinese, French, German, Hindi, Portugese, Spanish, Russian, and Thai
wir2026.wid.world/download/
wir2026.wid.world/download/
The 3rd edition of our World Inequality Report is prefaced by @josephestiglitz.bsky.social & Jayati Ghosh.
It comes at a challenging political time, but is more essential than ever to continue the historic movement toward equality.
Explore the report ▶️ wir2026.wid.world
It comes at a challenging political time, but is more essential than ever to continue the historic movement toward equality.
Explore the report ▶️ wir2026.wid.world
World Inequality Report 2026
The World Inequality Report 2026 offers the most up-to-date synthesis of international research efforts to track global inequalities.
wir2026.wid.world
December 10, 2025 at 10:24 AM
The 3rd edition of our World Inequality Report is prefaced by @josephestiglitz.bsky.social & Jayati Ghosh.
It comes at a challenging political time, but is more essential than ever to continue the historic movement toward equality.
Explore the report ▶️ wir2026.wid.world
It comes at a challenging political time, but is more essential than ever to continue the historic movement toward equality.
Explore the report ▶️ wir2026.wid.world
Thx @wid.world's team and fellows!
Over the past 25 years, 200+ researchers worldwide have contributed to the World Inequality Database. While these data remain imperfect and provisional, the global picture of long-term changes in income and wealth distributions is now well established.
(9/9)
Over the past 25 years, 200+ researchers worldwide have contributed to the World Inequality Database. While these data remain imperfect and provisional, the global picture of long-term changes in income and wealth distributions is now well established.
(9/9)
October 27, 2025 at 4:41 PM
Thx @wid.world's team and fellows!
Over the past 25 years, 200+ researchers worldwide have contributed to the World Inequality Database. While these data remain imperfect and provisional, the global picture of long-term changes in income and wealth distributions is now well established.
(9/9)
Over the past 25 years, 200+ researchers worldwide have contributed to the World Inequality Database. While these data remain imperfect and provisional, the global picture of long-term changes in income and wealth distributions is now well established.
(9/9)
(8/9)
Our interpretation of these long-run findings is that the rise of inclusive, social-democratic institutions has been central to achieving both greater equality and higher prosperity.
More findings coming in the #GlobalJusticeProject, June 2026.
inequalitylab.world/en/global-ju...
Our interpretation of these long-run findings is that the rise of inclusive, social-democratic institutions has been central to achieving both greater equality and higher prosperity.
More findings coming in the #GlobalJusticeProject, June 2026.
inequalitylab.world/en/global-ju...
Global Justice Project - World Inequality Lab
The Global Justice Project (GJP) aims to provide a platform to stimulate research, policymaking, and citizen engagement to shape a fairer, more democratic and sustainable 21st century.
inequalitylab.world
October 27, 2025 at 4:41 PM
(8/9)
Our interpretation of these long-run findings is that the rise of inclusive, social-democratic institutions has been central to achieving both greater equality and higher prosperity.
More findings coming in the #GlobalJusticeProject, June 2026.
inequalitylab.world/en/global-ju...
Our interpretation of these long-run findings is that the rise of inclusive, social-democratic institutions has been central to achieving both greater equality and higher prosperity.
More findings coming in the #GlobalJusticeProject, June 2026.
inequalitylab.world/en/global-ju...
7/9
If we look at wealth inequality, we see that it has always been extremely high, with the bottom 50% holding only a tiny share of total wealth. Despite this, there has been a significant long-run movement toward greater wealth equality in rich countries, particularly in Western and Nordic Europe.
If we look at wealth inequality, we see that it has always been extremely high, with the bottom 50% holding only a tiny share of total wealth. Despite this, there has been a significant long-run movement toward greater wealth equality in rich countries, particularly in Western and Nordic Europe.
October 27, 2025 at 4:41 PM
7/9
If we look at wealth inequality, we see that it has always been extremely high, with the bottom 50% holding only a tiny share of total wealth. Despite this, there has been a significant long-run movement toward greater wealth equality in rich countries, particularly in Western and Nordic Europe.
If we look at wealth inequality, we see that it has always been extremely high, with the bottom 50% holding only a tiny share of total wealth. Despite this, there has been a significant long-run movement toward greater wealth equality in rich countries, particularly in Western and Nordic Europe.
(6/9)
Our study compares Europe and the United States and challenges the widespread belief that rising inequality in the US since the 1980s has fueled innovation and productivity, especially in high-tech sectors. In fact, we find the opposite.
Our study compares Europe and the United States and challenges the widespread belief that rising inequality in the US since the 1980s has fueled innovation and productivity, especially in high-tech sectors. In fact, we find the opposite.
October 27, 2025 at 4:41 PM
(6/9)
Our study compares Europe and the United States and challenges the widespread belief that rising inequality in the US since the 1980s has fueled innovation and productivity, especially in high-tech sectors. In fact, we find the opposite.
Our study compares Europe and the United States and challenges the widespread belief that rising inequality in the US since the 1980s has fueled innovation and productivity, especially in high-tech sectors. In fact, we find the opposite.