thomaspiketty.bsky.social
Thomas Piketty
@thomaspiketty.bsky.social
4.8K followers 39 following 68 posts
Professor at EHESS & PSE Co-Director, World Inequality Lab inequalitylab.world | WID.world http://piketty.pse.ens.fr/
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
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Reposted by Thomas Piketty
wid.world
World Inequality Lab @wid.world · 18h
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22h
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22h
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
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Reposted by Thomas Piketty
lucaschancel.bsky.social
Lucas Chancel @lucaschancel.bsky.social · 1d
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 6d
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 · 6d
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
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Reposted by Thomas Piketty
icrict.bsky.social
ICRICT @icrict.bsky.social · 14d
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
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Reposted by Thomas Piketty
icrict.bsky.social
ICRICT @icrict.bsky.social · 8d
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…
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Reposted by Thomas Piketty
wid.world
World Inequality Lab @wid.world · 19d
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 20d
📆 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...
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
This study has many other findings but also limitations and we welcome constructive comments to continue building the #GlobalJustice Project 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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
3️⃣ Over the long run, public-private splits varied widely. 19th-century Britain had huge negative public wealth (250–300% of GDP). The US also showed negative wealth in the late 20th/early 21st century, mostly foreign. By contrast, China today has substantial positive public wealth.
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
2️⃣ Private wealth is at record highs in all advanced regions.
Public wealth, by contrast, has declined to turn negative in North America, fall near zero in Europe, while East Asia has stabilized with 25-30% of national wealth in public hands.
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
1️⃣ Wealth has risen much faster than income since 1980.

Global wealth-income ratios have risen dramatically from about 390% of world net domestic product in 1980 to over 625% in 2025. This surge reflects both higher savings and strong capital gains, especially in housing and equity markets.
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
Our new study shows that the Kaldor’s stability claim does not hold at the global level.

Large historical and regional variations exist, that are shaped less by technology or pure economics than by institutions, ideology, and power relations.

Below are 3 key findings from the study👇
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
With L. Bauluz, P. Brassac, @jonasdietrich.bsky.social @cmtneztt.bsky.social @gatonievas.bsky.social @moritzoder.bsky.social , @alisodano.bsky.social @anmol-smnch.bsky.social, we constructed the first global database of wealth accumulation covering 1800–2025. It covers 85–90% of world GDP.
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 22d
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...
wid.world
World Inequality Lab @wid.world · 22d
🔴 🌐First global database of wealth accumulation covering 1800–2025 now available 👇
wid.world/news-article...
@cmtneztt.bsky.social @thomaspiketty.bsky.social @alisodano.bsky.social @anmol-smnch.bsky.social @jonasdietrich.bsky.social @gatonievas.bsky.social
First global database of wealth accumulation covering 1800–2025 now available - WID - World Inequality Database
First global database of wealth accumulation covering 1800–2025 now available The source for global inequality data. Open access, high quality wealth and income inequality data developed by an interna...
wid.world
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Reposted by Thomas Piketty
icrict.bsky.social
ICRICT @icrict.bsky.social · 25d
"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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · 26d
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
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Reposted by Thomas Piketty
wid.world
World Inequality Lab @wid.world · 28d
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · Sep 5
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
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · Sep 5
*A History of Political Conflict. Elections and Social Inequalities in France 1789-2022*
>>> All data sets, visualization tools & book summaries are available on book website in english and french unehistoireduconflitpolitique.fr/home.html
Une histoire du conflit politique
Qui vote pour qui et pour quoi ? Comment se répartissent les votes et les richesses en France depuis deux siècles ? Rendez-vous sur unehistoireduconflitpolitique.fr !
unehistoireduconflitpolitique.fr
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thomaspiketty.bsky.social
Thomas Piketty @thomaspiketty.bsky.social · Sep 5
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 👇
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Reposted by Thomas Piketty
wid.world
World Inequality Lab @wid.world · Sep 4
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
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Reposted by Thomas Piketty
harvardpress.bsky.social
Harvard University Press @harvardpress.bsky.social · Sep 3
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.
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Reposted by Thomas Piketty
wid.world
World Inequality Lab @wid.world · Sep 1
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
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