Thomas Piketty
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thomaspiketty.bsky.social
Thomas Piketty
@thomaspiketty.bsky.social
5.1K followers 39 following 78 posts
Professor at EHESS & PSE
Co-Director, World Inequality Lab
inequalitylab.world | WID.world
http://piketty.pse.ens.fr/
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · Jun 19
What would a just distribution of socio-economic and environmental resources look like at the global level from 2025 to 2100 – both between and within countries?

From now to June 2026, the #GlobalJusticeProject will help provide answers.

inequalitylab.world/en/global-ju...

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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
thomaspiketty.bsky.social
Very important read ahead of #cop30 👇

The 2025 #ClimateInequality Report brings together pioneering research conducted by @wid.world and universities worldwide and was edited by @lucaschancel.bsky.social & @cmohren.bsky.social with inputs from @pbothe.bsky.social @stellamuti.bsky.social
October 29, 2025 at 8:07 AM
thomaspiketty.bsky.social
There is a strong positive association between equality and development over the long run — that's what this new study based on our historical series available on wid.world is clearly showing.

Key findings in thread 🧵(1/9)👇
October 27, 2025 at 4:41 PM
Reposted by Thomas Piketty
wid.world
Do individuals move ⤴️ or⤵️ the income ladder because of jumps in labor or capital income, or both?

👉Upward mobility is primarily driven by labor income but almost never by capital alone, find @marcoranaldi.bsky.social @joelliambuehler.bsky.social @robertoiacono.org

▶️ wid.world/news-article...
Upward mobility is primarily driven by labor income but almost never by capital alone - WID - World Inequality Database
Upward mobility is primarily driven by labor income but almost never by capital alone This paper studies the dynamics of capital and labor income mobility using high-quality register data from Norway.
wid.world
October 7, 2025 at 12:54 PM
thomaspiketty.bsky.social
Félicitations @lucaschancel.bsky.social pour ce livre magnifique

Il est impossible de faire face à nos défis climatiques sans repenser fondamentalement la structure des inégalités et de la propriété: qui possède l'énergie et pour quoi faire

www.seuil.com/ouvrage/ener...
Sciences humaines
Énergie et inégalités, Lucas Chancel : Pourquoi l’histoire de l’énergie est-elle intimement liée à celle des inégalités sociales ? Comment penser...
www.seuil.com
October 7, 2025 at 8:48 AM
thomaspiketty.bsky.social
Rethinking world trade
When setting tariffs, Trump has followed a narrowly nationalist and rather chaotic logic. The opposite approach is needed: Tariffs should be set based on universal and predictable principles.
www.lemonde.fr/blog/piketty...
Rethinking world trade
Confronted with the impact of Donald Trump's policies, Europe – like other parts of the world – has no choice but to fundamentally rethink its trade rules. To put it plainly: If Europe does not urgent...
www.lemonde.fr
October 7, 2025 at 8:47 AM
Reposted by Thomas Piketty
lucaschancel.bsky.social
www.lemonde.fr/idees/articl...
Lucas Chancel, économiste : « Seule la socialisation de l’énergie peut éviter aux Européens une vassalisation »
Dans un entretien au « Monde », le professeur à Sciences Po estime que la reprise de contrôle du secteur énergétique par les citoyens permettrait de mieux lutter contre les crises climatiques et démoc...
www.lemonde.fr
October 6, 2025 at 9:36 AM
thomaspiketty.bsky.social
Nouvelle étude de @yajnagovind.bsky.social @paolosantini.bsky.social & E. Derenoncourt confirme l’importance du facteur discriminatoire sur le marché du travail en 🇫🇷. Les minorités racisées subissent de fortes pénalités salariales. Être né.e en France réduit ces écarts, sans les faire disparaître.
wid.world World Inequality Lab @wid.world · Oct 1
Racial minorities in France face substantial earnings penalties, with Middle Eastern/North African and Sub-Saharan African individuals most affected. This is one of the key findings of a new study by @yajnagovind.bsky.social @paolosantini.bsky.social & E. Derenoncourt.

▶️ wid.world/news-article...
Racial minorities in France face substantial earnings penalties - WID - World Inequality Database
This study documents disparities in earnings and ranks across different minority groups in France and compare France with the US.
wid.world
October 1, 2025 at 12:14 PM
Reposted by Thomas Piketty
icrict.bsky.social
From trade wars to @un.org talks, global tax cooperation is at stake.
Oct 2, Paris, #ICRICT Commissioners, policymakers & civil society debate how to build a fairer international tax system amid great-power rivalry.
⏰6–8PM
📍Paris School of Economics
Inscriptions: shorturl.at/I6Kvp
#TaxThePower
September 23, 2025 at 9:54 AM
Reposted by Thomas Piketty
icrict.bsky.social
Intl' taxation is caught in great power struggles, as Donald Trump attempts to dismantle digital services & global minimum taxes.
Join @josephestiglitz.bsky.social @thomaspiketty.bsky.social
@manonaubryfr.bsky.social & Valerie Hayer, on Oct 2!
📍@pse.bsky.social
⏰6 PM
Register: shorturl.at/I6Kvp
Panel 1: Who Shapes the Rules? Trade Wars, Tax Battles and the Future of Global Governance (50 min) - 2 rounds of questions (40 min.) and (10 min.) of Q&A. International taxation is no longer a technocratic issue—it is caught in the crossfire of global power struggles. With the return of Trump, the U.S. is once again using tariffs and trade threats to dismantle Digital Services Taxes (DSTs) abroad, as well as the minimum tax on multinational corporations, defending its tech giants while undermining multilateral negotiations. This panel will examine how the weaponization of trade policy intersects with ongoing processes on international tax reform—from the OECD/G20 to the United Nations—raising fundamental questions about sovereignty, fairness, and the balance of power in global governance. Speakers will reflect on what is at stake: whether unilateralism and trade wars will derail efforts to build a fairer international tax system and what pathways exist toward an inclusive and equitable framework that can withstand great-power politics. Moderator: Victor Goury-Laffont (POLITICO). Joseph Stiglitz, ICRICT Co-Chair . Manon Aubry, Co-chair of the Left Group in the European Parliament Member of the ECON and FISC committees. Valérie Hayer, Présidente de Renew Europe au Parlement européen. Break and change of panel. Shaping the Future of International Tax Cooperation 3 7:05-7:50 PM 7:50-8:00 PM Panel 2: Negotiating the details: Key elements of the UN Framework Convention on International Tax Cooperation (45 min). Building on the political discussion, this panel will take a closer look at the concrete elements under negotiation in the UN Framework Convention on International Tax Cooperation and its early protocols on taxation of cross-border services and dispute prevention and resolution. Experts will examine proposals on the table, alternative measures advanced by different countries and regions, and the contrasting realities betwee…
September 29, 2025 at 10:39 AM
Reposted by Thomas Piketty
wid.world
Don't miss tomorrow's event with @thomaspiketty.bsky.social on global #inequality including preliminary results from the #GlobalJusticeProject.

📍In-person and online public event

🎟️ Registration www.lse.ac.uk/events/globa...
@lsepress.bsky.social
Thomas Piketty on global inequality | LSE Events
3.30pm Fri 19 Sept | Thomas Piketty | Ticket Required | Free public event at LSE
www.lse.ac.uk
September 18, 2025 at 10:28 AM
thomaspiketty.bsky.social
📆 Save the date: the 3rd edition of the World Inequality Conference will take place on 4–5 June 2026 at Paris School of Economics @pse.bsky.social

The call for papers is open until December 1.

🔗 More details & submission: inequalitylab.world/en/event/wor...
September 17, 2025 at 2:59 PM
thomaspiketty.bsky.social
Net private wealth has skyrocketed since 1980 - this is one of the main findings of a new @wid.world study overturning the Kaldor’s facts.
More findings in thread 🧵
🔗Study wid.world/news-article...
September 15, 2025 at 9:01 AM
Reposted by Thomas Piketty
icrict.bsky.social
"Un pays qui refuse de faire payer à ses plus riches citoyens le même impôt que les classes moyennes et populaires, qui renonce à toute possibilité... c'est un pays qui abandonne sa souveraineté" a dit notre commissaire @thomaspiketty.bsky.social dans BFMTV
September 12, 2025 at 2:04 PM
thomaspiketty.bsky.social
Notre niveau de dette publique est aussi élevé qu'au moment de la révolution française. L'histoire montre que ce niveau d'endettement se règle toujours, au moins en partie, par des mesures exceptionnelles de redistribution du patrimoine privé, pas par l’austérité.

www.radiofrance.fr/francecultur...
D'où vient la colère sociale ? Discussion avec Thomas Piketty
À la veille de la mobilisation « Bloquons tout » et au lendemain de la chute du gouvernement sur fond de débats autour de la dette et de la taxation des plus riches, Thomas Piketty fait paraître "Ce ...
www.radiofrance.fr
September 11, 2025 at 8:03 AM
Reposted by Thomas Piketty
wid.world
On the 10th anniversary of *Capital in the 21st Century* and 5th of *Capital and Ideology*, @thomaspiketty.bsky.social shared key lessons from his work + insights on global inequality transformations, emphasizing reasons for optimism👇
wid.world/news-article...
Capital in the 21st Century, Ten Years Later - WID - World Inequality Database
Capital in the 21st Century, Ten Years Later The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international academic consortium.
wid.world
September 9, 2025 at 8:37 AM
thomaspiketty.bsky.social
Disponible en librairie >>> www.seuil.com/ouvrage/ce-q...
editionsduseuil.bsky.social Éditions du Seuil @editionsduseuil.bsky.social · Sep 3
💡 Deux des intellectuels les plus influents de notre temps engagent un dialogue passionnant sur les enjeux contemporains de l'égalité : défis sociaux, économiques et politiques qui façonnent nos sociétés modernes, mécanismes qui creusent les inégalités...

📚 En librairie le 5 septembre
September 5, 2025 at 9:33 AM
thomaspiketty.bsky.social
Now available in english *A History of Political Conflict. Elections and Social Inequalities in France 1789-2022* 📚

Our book with Julia Cagé is out at @harvardpress.bsky.social >>> www.hup.harvard.edu/books/978067...

All data sets available below 👇
September 5, 2025 at 8:37 AM
Reposted by Thomas Piketty
wid.world
Pourquoi l’histoire de l’énergie est-elle liée à celle des inégalités ? Comment penser la transition énergétique à l’aune des conflits de répartition des richesses ?

📆 Rencontre & dédicace le 9 octobre avec @lucaschancel.bsky.social

✍️ Gratuit sur inscription inequalitylab.world/fr/event/deb...
Débat de l'Egalité avec Lucas Chancel - World Inequality Lab
A l’occasion de la sortie du nouvel ouvrage de Lucas Chancel, Energie et Inégalités, Une Histoire Politique, le Laboratoire sur les inégalités mondiales vous invite à une rencontre avec l’auteur […]
inequalitylab.world
September 4, 2025 at 10:03 AM
Reposted by Thomas Piketty
harvardpress.bsky.social
Who votes for whom, and why? These are questions that have been with us since the dawn of democracy.

In their new book, A History of Political Conflict, Julia Cagé and Thomas Piketty comb through more than 200 years of data to find answers.

Learn more: bit.ly/4lFvV5K
@thomaspiketty.bsky.social
A copy of A History of Political Conflict by Julia Cagé and Thomas Piketty ahead of a blurry mahogany background.
September 3, 2025 at 7:53 PM
Reposted by Thomas Piketty
wid.world
What should be publicly owned, or privatised?

@ewanmg.bsky.social builds develops a theory of when public or private ownership leads to better outcomes, using comparative data from OECD countries in sectors such as water, rail, electricity, and telecommunications ▶️ wid.world/news-article...
Public ownership outperforms privatisation when an enterprise is a skill-based, natural, or network monopoly - WID - World Inequality Database
Public ownership outperforms privatisation when an enterprise is a skill-based, natural, or network monopoly This paper develops a theory of when public or private ownership leads to better outcomes, ...
wid.world
September 1, 2025 at 10:09 AM
Reposted by Thomas Piketty
wid.world
Since COVID, US wage inequality has sharply narrowed -undoing ~⅓ of the rise since 1980 🇺🇸

@adamaboobaker.bsky.social & P. Skott show why tight labor markets alone can’t explain it: policy design, turbulence & shifting power matter.

Read more▶️ wid.world/news-article...
The recent compression of US wage inequality: tightness, turbulence, and power-biased policy - WID - World Inequality Database
The recent compression of US wage inequality: tightness, turbulence, and power-biased policy This paper evaluates the extent to which the recent wage compression in the US can be explained by the gene...
wid.world
August 18, 2025 at 8:51 AM
Reposted by Thomas Piketty
wid.world
We've updated wpid.world to cover recent trends in political polarization around the world! 🌍
Among striking results, the 2024 U.S. election saw educational divides that are unprecedented in modern history 👇
explore.wpid.world/intime/educ/vo
August 6, 2025 at 7:47 AM
Reposted by Thomas Piketty
wid.world
Inequalities in exposure to environmental risks – flooding and subsidence – are high and vary across home ownership status in France (owner-occupants, and owners of rental, second, or vacant homes) [🧵1/6]
New study by Thomas Bézy 🔗 wid.world/news-article...
Inequalities in exposure to environmental risks are high and vary across home ownership status - WID - World Inequality Database
This paper examines explores how natural disaster risks—specifically flooding and subsidence—are distributed across different types of property owners in France.
wid.world
July 17, 2025 at 6:51 AM
thomaspiketty.bsky.social
How should we analyze the new wave of trade tensions that gripped the world in 2025? To better understand the issues at stake, the World Inequality Lab @wid.world recently published a historical study on global trade and financial imbalances since 1800 www.lemonde.fr/blog/piketty...
Two centuries of unequal exchanges
How should we analyze the new wave of trade tensions that gripped the world in 2025? To better understand the issues at stake, the World Inequality Lab recently published a historical study on global ...
www.lemonde.fr
July 17, 2025 at 6:54 AM
thomaspiketty.bsky.social
Children in Sub-Saharan Africa receive just 3% of the public education funding available to their peers in Europe and North America.

🧵A thread on a NEW STUDY written with @nitin-k-bharti.bsky.social A. Gethin @markjmn.bsky.social @zhexunmo.bsky.social & L. Yang.

🔗 wid.world/www-site/upl...
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July 3, 2025 at 8:18 AM