Thomas Piketty

What would it take to achieve high prosperity and equality while remaining within planetary boundaries? The World Inequality Lab is very excited to launch the #GlobalJusticeReport. [1/7]

Thomas Piketty reposted

wid.worldSpanish Tax on Large Fortunes raises over €600 million in revenue and reduces Madrid's tax privileges - WID - World Inequality DatabaseFrancisco García-Rodríguez, Dmitry Petrov, and Alice Sodano study the effects of Spain’s introduction of a national wealth tax on high-wealth individuals, designed to partially harmonise wealth taxati...

Spanish Tax on Large Fortunes raises over €600 million in revenue and reduces Madrid’s tax privileges, finds new working paper by Francisco García-Rodríguez, Dmitry Petrov & @alisodano.bsky.social. 📰Covered by @elpais.com today - link in thread👇 wid.world/news-article...

thomaspiketty.wordpress.comHigh schoolers, students: the twilight of macronismThe current high school and student movement in France marks the twilight of Macronism. Young people are asking for one simple thing: resources to get an education and access to quality studies. In…

Hundreds of thousands of young people work hard to earn their high school diplomas, but there is nothing planned to welcome them into higher education👇 thomaspiketty.wordpress.com/2026/10/20/h...

Le mouvement lycéen et étudiant signe le crépuscule du macronisme: les jeunes veulent se former et accéder aux études, et un pouvoir élitiste leur répond en réduisant de 20% le budget par étudiant entre 2017 et 2026 et en gérant la pénurie avec un algorithme opaque (Parcoursup)

Thomas Piketty reposted

wid.worldPreferences for Inheritance Taxation in Europe: Experimental Evidence on Vertical Equity and Public Debt - WID - World Inequality DatabaseIn this paper, Edison Jakurti studies how people think inheritances should be taxed using a randomized factorial vignette experiment with 8,106 respondents from probability-based panel surveys across ...

22 Sept

What inheritance tax rates do people consider appropriate? What drives these preferences: fairness concerns, self-interest, or government fiscal needs? To explore these questions, @edisonjakurti.bsky.social draws on data from 8,106 individuals across 11 European countries wid.world/news-article...

lemonde.fr« Nous appelons la France à soutenir la création d’un Panel international sur les inégalités »TRIBUNE. Avant l’Assemblée générale des Nations unies, fin septembre, dix économistes, parmi lesquels Lucas Chancel, Thomas Piketty, Joseph Stiglitz et Gabriel Zucman expliquent, dans une tribune au «...

21 Sept

Avec Julia Cagé, Lucas Chancel et plus de 1500 chercheurs dans le monde, nous demandons que la France rejoigne l'Afrique du Sud, le Brésil, l'Espagne, la Norvège et l'Allemagne et soutienne aux Nations Unies la création d'un "GIEC des inégalités" www.lemonde.fr/idees/articl...

theguardian.comGlobal leaders urged to join initiative to fight extreme inequalityMore than 1,500 academics and economists sign letter, calling growing gap between richest and poorest ‘a policy choice that can be reversed’

18 Sept

Before the UN general assembly next week, I joined 1,500+ academics from 100+countries in calling on global leaders to create an International Panel on Inequality modelled after the IPCC, as recommended by the G20 Committe on Inequality led by @josephestiglitz.bsky.social last year. Please share.

thomaspiketty.wordpress.comRethinking prosperity within planetary boundariesWould it be possible for every country to one day achieve a national income of about €5,000 per month per person, a level close to what is currently observed in the richest countries, while also ma…

15 Sept

Following a summer marked by extreme events and destruction, public awareness may begin to shift thomaspiketty.wordpress.com/2026/09/15/r...

Thomas Piketty reposted

wid.worldWho Bears the Cost of Air Pollution? How Pollution Shocks Widen Socio-Economic Gaps in Educational Achievement - WID - World Inequality DatabaseIn this paper , Simon Briole and Camille Salesse focus on the effect of fine particulate matter (PM2.5), the pollutant responsible for the largest share of health and economic damages attributable to ...

15 Sept

New study by @simonbriole.bsky.social and @camillesalesse.bsky.social shows that air pollution widens educational inequalities: up to 25% of the achievement gap between advantaged and disadvantaged students in high school in France can be explained by it. Read more▶️ wid.world/news-article...

Thomas Piketty reposted

nature.comWhy we need an International Panel on InequalityDisparities in income and wealth are growing. A scientific assessment process can give governments the information they need to tackle them.

9 Sept

We are now calling world leaders and governments to support the urgent establishment of the International Panel on Inequality (IPI) alongside @josephestiglitz.bsky.social @jayatighosh.bsky.social and 600+ economists and inequality experts www.nature.com/articles/d41...

Thomas Piketty reposted

@boldpolitics.bsky.social

14 Aug

In a special Independence Day edition of Outlook India magazine, @nitin-k-bharti.bsky.social @lucaschancel.bsky.social @thomaspiketty.bsky.social & @anmol-smnch.bsky.social challenge the idea that India should chase growth above all and treat inequality as a concern only for rich countries.

Thomas Piketty reposted

Bold Politics

10 Aug

"If you are a billionaire and you want to preserve your wealth then you should go and die in communist China" - Thomas Piketty

Thomas Piketty reposted

22 July

𝗧𝗵𝗼𝗺𝗮𝘀 𝗣𝗶𝗸𝗲𝘁𝘁𝘆 and 𝗞𝗶𝗺 𝗦𝘁𝗮𝗻𝗹𝗲𝘆 𝗥𝗼𝗯𝗶𝗻𝘀𝗼𝗻 in conversation at the World Inequality Conference 2026👇 Watch the full session on our YouTube channel: youtu.be/jY9iFdWSbd0?...

7 July

The problem is not too little growth, but the wrong kind. What matters is not how much we grow, but what we grow — and for whom. Our response in @financialtimes.com to @jburnmurdoch.ft.com Bottom line: economic and climate justice require rethinking growth, not necessarily abandoning it.

Thomas Piketty reposted

25 June

🟣 Videos from the plenary sessions at the 2026 World Inequality Conference are now available online! Watch them now ▶️ globaljusticeproject.wid.world/video/

thomaspiketty.wordpress.comUn référendum pour un nouveau modèle de développementLa France va faire des choix politiques décisifs dans l’année qui vient. D’un côté, une droite nationaliste en plein essor, de plus en plus proche des milieux d’affaires, et qui entend arriver au p…

23 June

Pour clarifier ses positions et unir ses forces, la gauche doit proposer l’adoption par référendum d’un impôt de solidarité nationale pesant sur les milliardaires et centimillionaires thomaspiketty.wordpress.com/2026/06/23/u...

Thomas Piketty reposted

theguardian.com‘An equal and habitable world is possible’: academics set out sweeping vision for planetary survivalGlobal report provides an alternative to climate breakdown, political extremism and economic tensions

11 June

If you missed it, read @theguardian.com extensive coverage of our new #GlobalJusticeReport. You may want to start with this excellent piece by @jonathan-watts.bsky.social More in thread 🧵 👇 www.theguardian.com/environment/...

theguardian.comWe economists have done the maths: ‘growth’ is a doomed strategy – there is a better way | Olivier De Schutter and othersOur roadmap has been shaped by experts across the world. We call on political leaders at all levels to use it, says Olivier De Schutter and others

10 June

I am among the more than 350 signatories who have put their names to support the “roadmap for eradicating poverty beyond growth”. Read the opinion piece: www.theguardian.com/commentisfre...

What would it take to achieve high prosperity and equality while remaining within planetary boundaries? The World Inequality Lab is very excited to launch the #GlobalJusticeReport. [1/7]

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The current international order is plutocratic. In the IMF, rich countries have four times more voting rights than their population share, while poor countries have four times less. It is essential to move away from this plutocratic system to a new democratic order with a one-person one-vote order.

globaljusticeproject.wid.worldGlobal Justice Project

This is the result of more than two years of research of 45 direct contributors and in continuation of many international initiatives and a much longer research tradition on inequality and the climate crisis. Find report, website, research papers and more here: globaljusticeproject.wid.world

What would it take to achieve high prosperity and equality while remaining within planetary boundaries? The World Inequality Lab is very excited to launch the #GlobalJusticeReport. [1/7]

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We envision a new institution, the Global Justice Fund to finance this sustainable convergence path. The fund would raise revenue via global wealth and income taxes to be used for climate investments, expansion of health and education, and building up a World Sovereign Fund.

To cover the investment needs of the transition, the fund will be 20x larger than current development aid. Still, the flows from the Global North to the Global South are far from making up for historical climate and colonial damages caused by the North. That's why we'd need to scale up the platform.

What would it take to achieve high prosperity and equality while remaining within planetary boundaries? The World Inequality Lab is very excited to launch the #GlobalJusticeReport. [1/7]

The key finding of the report is that energy transition alone will not suffice. We need to combine it with "sufficiency" to stay within 2 degrees. This includes labour hour reductions, growth caps in rich countries, less material consumption, and changes in food habits.

In order to raise the resources necessary to finance sustainable convergence, as well as improve the living standards of lower- and middle-income groups (both in the Global South and North), it is inevitable to drastically reduce wealth and income inequality.

Thomas Piketty reposted

wid.worldCutting hours through outsourcing - WID - World Inequality DatabaseCutting hours through outsourcing Olivier Godechot and Ulysse Lojkine study the effects of on-site outsourcing of low-skilled service jobs (cleaning, catering, security) in France.

13 Apr

Outsourced workers in low-skilled service jobs (cleaning, catering, security) in 🇫🇷 face a substantial earnings penalty—about 10 log points—persisting for up to 7 years after outsourcing, find @ulojkine.bsky.social & @oliviergodechot.bsky.social in new study. More findings▶️ wid.world/news-article...

Thomas Piketty reposted

wid.worldLand Inequality in India: Nature, History, and Markets - WID - World Inequality DatabaseLand Inequality in India: Nature, History, and Markets In this paper, Nitin Kumar Bharti, David Blakeslee, and Samreen Malik study how agricultural suitability, historical institutions, and market acc...

7 Apr

📝New study by @nitin-k-bharti.bsky.social D. Blakeslee, & S. Malik shows that land inequality in rural India is extremely high: 👉The top 10% own 44% of land area 👉Historical institutions and the caste system also leave persistent effects on land distribution More findings ▶️ wid.world/news-article...

Thomas Piketty reposted

wid.worldConflicting Claims and Taxation: A Distributive History of 20th Century Peru - WID - World Inequality DatabaseCésar Castillo-García reconstructs Peru’s factor income shares and macroeconomic aggregates from 1942 to 2022 using the Distributional National Accounts (DINA) methodology and historical national acco...

31 Mar

Peru 🇵🇪 has developed one of the most regressive tax systems in the world, characterized by low top marginal rates on income and inheritance and a limited capacity for redistribution. This is one of the key findings of @ccastgr.bsky.social's paper ▶️ wid.world/news-article... Spanish coverage ⬇️🧵

Thomas Piketty reposted

gatonievas.bsky.social

@gatonievas.bsky.social

26 Mar

The Global Democratic Deficit: Undemocratic international institutions favor powerful countries—they secure power in the international system at a very cheap cost and chose who benefits from aid 🧵A thread on a NEW STUDY written with @PaulaDruschke 1/6 wid.world/news-article...

wid.worldThe Global Democratic Deficit: Undemocratic international institutions favor powerful countries—and shape who pays and who benefits - WID - World Inequality DatabaseThe Global Democratic Deficit: Undemocratic international institutions favor powerful countries—and shape who pays and who benefits Paula Druschke and Gastón Nievas construct a novel historical databa...

26 Mar

New on @wid.world: @gatonievas.bsky.social & P. Druschke find that 70% of World Bank and IMF funds are allocated to G7 geopolitically aligned countries. Rich countries pretend to be in favour of democracy but in practice they've built an undemocratic international system. wid.world/news-article...

Thomas Piketty reposted

wid.worldShould Charitable and Political Donations Benefit from Similar Tax Treatments? Evidence from a Survey Experiment - WID - World Inequality DatabaseShould Charitable and Political Donations Benefit from Similar Tax Treatments? Evidence from a Survey Experiment In this paper, Julia Cagé, Malka Guillot, and Yuchen Huang study how tax incentives aff...

24 Mar

𝐖𝐡𝐨 𝐫𝐞𝐚𝐥𝐥𝐲 𝐛𝐞𝐧𝐞𝐟𝐢𝐭𝐬 𝐟𝐫𝐨𝐦 𝐭𝐚𝐱 𝐛𝐫𝐞𝐚𝐤𝐬 𝐨𝐧 𝐩𝐨𝐥𝐢𝐭𝐢𝐜𝐚𝐥 𝐝𝐨𝐧𝐚𝐭𝐢𝐨𝐧𝐬? New research by Julia Cagé, @mgn89.bsky.social and Yuchen Huang suggests these can act as a windfall for a small group of donors, with no effect on participation or amounts given wid.world/news-article...

wid.worldTerms of Trade and North-South Relations: Implications for Foreign Wealth Accumulation and Comparative Development (1962-2025) - WID - World Inequality DatabaseTerms of Trade and North-South Relations: Implications for Foreign Wealth Accumulation and Comparative Development (1962-2025) In this paper, Simon Keller studies how the long-run evolution of primary...

12 Mar

New working paper on @wid.world Bottom line: Had mining prices followed fuel prices over 1970–2025, Sub-Saharan Africa would own the world. Bargaining power and institutions matter.

World Inequality Lab@wid.world

Who benefits from global trade? New research by Simon Keller shows how commodity prices shape global wealth inequality: if mining exporters had raised prices like oil producers, Sub-Saharan Africa could hold foreign wealth of +1400% of GDP instead of –43%❗ Read more 🔗 wid.world/news-article...

thomaspiketty.wordpress.comMilitaristic drift, admission of weaknessLet’s spell it out directly: The militaristic drift of the United States that we are witnessing with the war in Iran resonates above all as a terrible admission of weakness. American elites h…

10 Mar

"The militaristic drift of the United States resonates above all as a terrible admission of weakness in the face of the financial, commercial and political fragility of the country." My opinion piece in @lemonde.fr thomaspiketty.wordpress.com/2026/03/10/m...

lemonde.frAvec la baisse du nombre d’enfants, le privé pourrait représenter la moitié des élèves parisiens de 6ᵉ en 2035Une étude de l’Institut des politiques publiques, menée par les chercheurs Pauline Charousset et Julien Grenet, alerte sur les évolutions en cours, notamment dans la capitale. Elle pose le risque d’un...

6 Mar

Quand la France invente la ségrégation extrême, financée par l'argent public: la part des enfants de 6e scolarisés dans le privé atteint 39% à Paris en 2025, avec des écarts hallucinants entre classes sociales www.lemonde.fr/societe/arti...

Institut des politiques publiques @ippofficial.bsky.social

🏫 Baisse démographique et dynamiques public-privé : vers une ségrégation scolaire accrue dans les grandes villes ? ✒️ Note IPP n°124 par Julien Grenet et Pauline Charousset ▶️ Lire la note : www.ipp.eu/publication/...

3 Mar

New working paper: Prosperity within Limits? Planetary Habitability, Global Convergence & Structural Transformation 2026-2100 wid.world/news-article... More to come in the Global Justice Report to be released at the World Inequality Conference Paris June 4-6 2026 inequalitylab.world/en/event/wor...

Thomas Piketty reposted

wid.worldSkin Tone Penalties: Quasi-Experimental Evidence on Colorism in Football - WID - World Inequality DatabaseThis paper studies skin tone discrimination in men’s professional football by comparing shots that narrowly score with those that narrowly miss the goal.

10 Feb

📝New research by @billywoom.bsky.social and @doniakamel.bsky.social uncovers how skin tone shapes player recognition in professional #football — even when performance is identical⚽️ These biases translate into lower market valuations for darker-skinned players. Read more ▶️ wid.world/news-article...

thomaspiketty.wordpress.comEurope, a social-democratic powerTo assert itself on the world stage, Europe first has to take pride in what it has become since 1945: a democratic, social and transnational power. European countries, which had long been fierce ri…

5 Feb

To win the cultural and intellectual battle, Europe must now assert its values and defend its model of development, fundamentally opposed to the nationalist-extractivist model of Trump and Putin thomaspiketty.wordpress.com/2026/02/03/e...

Thomas Piketty reposted

29 Jan

2025 highlights: ✨ Inequality placed on the agenda of the 𝗚𝟮𝟬 𝘀𝘂𝗺𝗺𝗶𝘁 ✨2025 𝗖𝗹𝗶𝗺𝗮𝘁𝗲 𝗜𝗻𝗲𝗾𝘂𝗮𝗹𝗶𝘁𝘆 𝗥𝗲𝗽𝗼𝗿𝘁 published in October ✨2026 𝗪𝗼𝗿𝗹𝗱 𝗜𝗻𝗲𝗾𝘂𝗮𝗹𝗶𝘁𝘆 𝗥𝗲𝗽𝗼𝗿𝘁 published in December ✨27 Working Papers authored by 78 researchers ...and more! 📖 Flip through our report heyzine.com/flip-book/22...

Thomas Piketty reposted

22 Jan

To make the most of the World Inequality Database, consult the DINA Guidelines and other resources: wid.world/methodology/ This 3rd edition includes improved or new: 🔹macro aggregates 🔹income and wealth definitions 🔹data-quality flags 🔹sections on wealth distribution and gender inequality

Thomas Piketty reposted

@marie-andreescu.bsky.social

21 Jan

Un débat essentiel pour reprendre la main sur l’énergie ⚡ 🗣️ Avec @lucaschancel.bsky.social et Anne Debrégeas 🎙️Animé par @jadelindgaard.bsky.social 📅 Jeudi 29 janvier, 19h Entrée libre. Inscription conseillée ▶️ inequalitylab.world/fr/event/a-l... @attac.org

Thomas Piketty reposted

Marie Renée Andreescu

11 Jan

Le décrochage européen est plus une histoire de ralentissement que de point de non retour. La suite dans ma tribune @lemonde.fr fondée sur nos travaux du @wid.world où nous discutons tendances historiques avec R. Loubes, @thomaspiketty.bsky.social et A.-S. Robillard: www.lemonde.fr/idees/articl...

Thomas Piketty reposted

wid.worldMapping The Redistributive Debates In Norway And The United States - WID - World Inequality DatabaseMapping The Redistributive Debates In Norway And The United States This paper studies pro-redistributive arguments in legislative debates in the U.S. Congress and the Norwegian Storting from 2015 to 2...

19 Jan

How do people argue for redistribution in Norway 🇳🇴 vs the U.S. 🇺🇸? Do debates lean more on emotional fairness arguments or analytical externality arguments? And what type of argument convinces who? New study by @mortenstostad.bsky.social, M. Lobeck & C. de Meulenaer ▶️ wid.world/news-article...

thomaspiketty.wordpress.comProject 2025, from nightmare to realityThe year 2025 was marked by the Trump shock: an unprecedented wave of extreme brutality, unapologetic nationalism, and unrestrained extractivism that shook the world as never before since 1945. To …

16 Dec 2025

To better understand what made the Trump shock possible, and how to confront it in the future, we must turn to its roots, namely, to Project 2025 thomaspiketty.wordpress.com/2025/12/16/p...

youtube.comWorld Inequality Report 2026YouTube video by World Inequality Lab

Today, we are publishing our World Inequality Report, which reviews the most recent #inequalitydata and exposes the magnitude of #inequality across time, space and all its dimensions. 👇Share this thread, share the report! www.youtube.com/watch?v=R67u...

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wid.worldHome - WID - World Inequality DatabaseHome The source for global inequality data. Open access, high quality wealth and income inequality data developed by an international academic consortium.

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.

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.

youtube.comWorld Inequality Report 2026YouTube video by World Inequality Lab

wir2026.wid.worldWorld Inequality Report 2026The World Inequality Report 2026 offers the most up-to-date synthesis of international research efforts to track global inequalities.

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

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/

Thomas Piketty reposted

9 Dec 2025

📰 En Une du @lemonde.fr aujourd'hui : "L'extrême concentration des richesses mondiales" 3 article à lire pour découvrir en avant-première Le Rapport sur les inégalités mondiales 2026 www.lemonde.fr/economie/art...

Thomas Piketty reposted