World Inequality Conference 2026 - World Inequality Lab The World Inequality Lab is organizing the third edition of the World Inequality Conference, to be held at the Paris School of Economics on June 4-5, 2026.

📣Registration just opened for the 2026 World Inequality Conference, and there are already only a few spaces left.

Hurry up to register!

inequalitylab.world/en/event/wor...

📢 Don’t miss our next #LunchSeminar with
Adnan Khan ( @lsepublicpolicy.bsky.social )!

Rebuilding the Social Compact: Urban Service Delivery and Property Taxes in Pakistan

🗓️ April 24 | 12 pm (CET)
📍 @pse.bsky.social & Zoom

🔗 Register here: taxobservatory.world/event/lunch-...

@gabrielzucman.bsky.social met with the Brazilian and Spanish Ministers of Finance as they step up efforts to tax the super-rich 🇧🇷 🇪🇸

They commit to lead and coordinate an international agenda—and call on others to join.

Proud to see our work helping turn momentum into concrete cooperation.

“It is not radical to ask the super-rich to pay as much tax as everyone else. What is radical is allowing them to keep paying less. The momentum is there—now we need to work together to carry it forward in Barcelona.” — @gabrielzucman.bsky.social

“I have good news: we are making progress to finally make billionaires pay their fair share. This is the defining battle of the 21st century—between democracy and oligarchy—and I’m confident democracy will prevail.” — @gabrielzucman.bsky.social

“Extreme wealth is extreme power—and we cannot accept a world where that power comes without responsibility. That’s why we need a clear principle: extreme wealth must come with unavoidable duties to society, through a minimum tax on the super-rich.” — @gabrielzucman.bsky.social

Global Progressive Mobilisation Uniting the World's Progressive Forces — April 17-18, 2026, Fira Barcelona

Happening now 📣
Listen to @gabrielzucman.bsky.social 's speech at the GPMobilisation plenary

📅 April 18
🕐 15.05 CET
📍 Plenary Salvador Allende

🎥Live: globalprogressivemobilisation.org/en/live-stream

#GPM2026 #TaxTheSuperRich

also @gabrielzucman.bsky.social had the pleasure of meeting Elly Schlein, Secretary of the Italian Democratic Party, to discuss the taxation of the super-rich in Italy

“The good news is an international movement is taking shape. After Brazil’s G20, taxing the super-rich is now a concrete policy agenda. Momentum is accelerating, with initiatives in France, Brazil, Spain, and the Netherlands.”
@gabrielzucman.bsky.social

The challenge is to break the spiral of wealth buying power, and power generating wealth. It has to start with ensuring that the HNWI are taxed like the rest of us. It’s the starting point if we want policies capable of protecting democracy from oligarchic drift"
@gabrielzucman.bsky.social

Agora Ernest Lluch: Inequality, Democracy, and Distributive Justice - Original Audio YouTube video by Global Progressive Mobilisation

Happening soon 🎯

@GabrielZucman keynote at @GPMobilisation

📅 April 17
🕟17:00 CET
📍Agora Ernest Lluch

📷Live: youtube.com/live/bDDLpOW...

#GPM2026 #TaxTheSuperRich

📣 NOW in Barcelona!

Join #ICRICT's #TomassoFaccio &
@isabellamweber.bsky.social, #WayneSwan, #StefanLöfven, #BrunoGonçalves, #DeboraFreire at the #GPM, on how to confront extreme wealth inequality.

🗓️April, 17
⏰12 CET
📍Agora

🔴Live: youtube.com/watch?v=Pfuq...
#GPM2026 #TaxTheSuperRich

As wealth concentrates, so does power — the power to influence elections, shape policy, tilt markets and define the terms of public debate.

Taxing billionaires is not radical.

What is radical is allowing a system where extreme wealth exists alongside widespread hardship.

Tax Day is a reminder of America’s unequal tax system. But we can fix it | Zohran Mamdani, Gabriel Zucman and Joseph Stiglitz There is no justification for a regressive system in which the super-rich contribute less than the rest of us

6/ If you want to read more, the three speakers also co-authored a Tax Day op-ed in The Guardian: urls.fr/FmEJ6Y

🎥 Full discussion: urls.fr/bu8_yY

5/ “An international movement is taking shape: building on Brazil’s G20 work, countries are joining forces to tax billionaires. This week, under Pedro Sánchez’s leadership, 15 heads of state meet in Barcelona to advance this crucial agenda.”
— @gabrielzucman.bsky.social

4/ “A key driver of inequality is an unfair tax system, where those at the top actually pay a smaller share than those at the bottom. On this Tax Day, let’s commit to fixing this injustice and ensure the rich pay their fair share.”
— @josephestiglitz.bsky.social

3/“The proposal of a 2% minimum tax on the rich across the globe is the right one—and, much like with climate change, we cannot allow ourselves to wait for a global agreement to take local action.”
— @mayor.nyc.gov

2/ The conversation brought together global and local perspectives on tackling wealth inequality - set against the backdrop of New York City, one of the world’s leading hubs for multi-millionaires and a key testing ground for policy responses.

1/ Today in NYC: @gabrielzucman.bsky.social joined Mayor @mayor.nyc.gov and @josephestiglitz.bsky.social for “Confronting Global Inequality: Tax Day Policy Forum.” 🧵

Mayor Mamdani Holds Tax Day Forum with Economists Gabriel Zucman and Joseph Stiglitz Mayor Mamdani Holds Tax Day Forum with Economists Gabriel Zucman and Joseph StiglitzCUNY Graduate Center365 5th AvenueMidtown ManhattanApril 15, 2026

Happening soon 🚨
Gabriel Zucman joins @zohrankmamdani.bsky.social & @josephestiglitz.bsky.social to talk taxation of the super rich
Don’t miss it → Watch live: urls.fr/lVATV-

6/ But this isn’t just about revenue. Our proposal would also address regressivity at the top, ensuring that those at the top contribute according to their economic capacity and pay at least as much as everyone else.

5/ The report evaluates reform options and finds that a Minimum Tax on the Super Rich is the most effective tool to address the problem. A 2% minimum tax on fortunes above $100M across 7 LAC countries could generate around $24 billion annually — 0.6% of regional GDP.

4/ At the very top, it’s even worse. The richest 0.01% in Chile and Brazil pay roughly half as much as the average citizen in each country.

3/ Tax systems do not effectively reduce inequality. On average:
➡️ Poorest 50% pay ~30% of income in taxes
➡️ Richest 1% pay ~22%
The more you have, the less you pay — proportionally.

2/ The findings show a high concentration of wealth at the top. Since 2000:
💰 Billionaire wealth ↑ 6x (~$700B today)
👥 Poorest 50% → almost no progress

1/ Our new report, commissioned by Brazil under the PTLAC presidency, examines the progressivity of tax systems in Latin America and their limits in taxing high-net-worth individuals

Link to the report: urls.fr/58nFXA

But this isn’t just about revenue. Our proposal would also address regressivity at the top, ensuring that those at the top contribute according to their economic capacity and pay at least as much as everyone else.

The report evaluates reform options and finds that a Minimum Tax on the Super Rich is the most effective tool to address the problem. A 2% minimum tax on fortunes above $100M across 7 LAC countries could generate around $24 billion annually — 0.6% of regional GDP.

At the very top, it’s even worse. The richest 0.01% in Chile and Brazil pay roughly half as much as the average citizen in each country.

Tax systems do not effectively reduce inequality. On average:
➡️ Poorest 50% pay ~30% of income in taxes
➡️ Richest 1% pay ~22%
The more you have, the less you pay — proportionally.