Author | Lightnews

Reposted by Quentin Parrinello

ICRICT @icrict.bsky.social · Sep 29

The world (minus the #US) is negotiating a global #UNTaxConvention!
Join José Antonio Ocampo @toveryding.bsky.social @ryadslmn.bsky.social @qparrinello.bsky.social Eva Joly & Wanda Montero, Thursday Oct 2, in Paris.
📍@pse.bsky.social
⏰6-8pm
To register: shorturl.at/I6Kvp

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EU Tax Observatory @taxobservatory.bsky.social · Sep 24

1/6 Does requiring stronger due diligence for foreign sourcing work? 🤔

Our latest policy note by @nmoreaukastler.bsky.social and @giuliavaraschin.bsky.social looks at the US experience with conflict minerals 🧵

Read the full note: www.taxobservatory.eu/publication/...

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Michaël Zemmour @michaelzemmour.cpesr.fr · Sep 23

Un travail extrêmement impressionnant d'une équipe de l'IPP sur la taxation des très hauts revenus.

Il y a plein de choses à en tirer, mais cela (re)confirme que les ménages extrêmement fortunés contournent l'imposition individuelle sur le revenu en se servant des sociétés qu'ils contrôlent.

Laurent Bach @laurent-bach.bsky.social · Sep 23

Nous mettons en accès public un document de travail (« working paper ») qui reprend et étend la note 92 de l’IPP sur l’imposition des milliardaires (1/10) www.ipp.eu/publication/...

Quels impôts les milliardaires paient-ils ? | Institut des Politiques Publiques – IPP

> Lire la note (version actualisée au 07.06.2023) > Lire le working paper (septembre 2025) > S'abonner pour recevoir les futures publications de l'IPP Présentation A l’aide de données administratives ...

www.ipp.eu

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Quentin Parrinello @qparrinello.bsky.social · Sep 23

🤏

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EU Tax Observatory @taxobservatory.bsky.social · Sep 23

Today, our Policy Director, @qparrinello.bsky.social, was auditioned by the FISC Committee of the European Parliament on the implications of Trump administration tax policies on Europe 🇪🇺

📺 Watch the full session: multimedia.europarl.europa.eu/en/webstream...

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Matt Collin @mattcollin.bsky.social · Sep 16

This one is for the kids

www.instagram.com/reel/DOqNUC-...

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Quentin Parrinello @qparrinello.bsky.social · Sep 9

"A solution to France’s fiscal and political stalemate has been hiding in plain sight: a tax on the ultrawealthy" in the New York Times
www.nytimes.com/2025/09/09/o...

Opinion | The Solution to France’s Woes Is Hiding in Plain Sight

www.nytimes.com

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Michaël Zemmour @michaelzemmour.cpesr.fr · Jul 15

Impôts et prestations: quels effets attendre d’une « année blanche »? Par @pmadec.bsky.social

% au revenu, l'effet d'un gel est bien évidemment plus fort sur les ménages modestes (via les prestations) que sur un ménage médian (via l'IR)

www.ofce.sciences-po.fr/blog2024/fr/...

Effet du gel des prestations sociales, des pensions de retraite et de l'IR par 20e de niveau de vie.

Le niveau de vie est diminuée d'environ 0,8% au 1er vingtième, 0,6% au 6e vingtième et 0,4% au delà de la médiane

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Joseph E. Stiglitz @josephestiglitz.bsky.social · Jul 7

Think how much you pay in taxes. Now think about this: The ultra-wealthy pay between 0% and 0.6% of their wealth in individual income tax – around 0.6% in a country like the United States and 0.1% in a country like France.
We wrote about it in @lemonde.fr www.lemonde.fr/en/opinion/a...

Tax on ultra-rich: 'France has the opportunity to lead the way,' say Nobel Prize-winning economists

OP-ED. As public deficits balloon and extreme wealth explode, creating a minimum tax on the assets of billionaires should be a priority, argue seven Nobel Prize-winning economists in an op-ed for Le M...

www.lemonde.fr

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Gabriel Zucman @gabrielzucman.bsky.social · Jul 7

An international call for action just got louder:

Today, 7 Nobel Laureates have issued a powerful call for a minimum tax on the ultra-wealthy in Le Monde

Here’s a quick breakdown of the debate—and where things stand globally

🧵

www.lemonde.fr/en/opinion/a...

Tax on ultra-rich: 'France has the opportunity to lead the way,' say Nobel Prize-winning economists

OP-ED. As public deficits balloon and extreme wealth explode, creating a minimum tax on the assets of billionaires should be a priority, argue seven Nobel Prize-winning economists in an op-ed for Le M...

www.lemonde.fr

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Quentin Parrinello @qparrinello.bsky.social · Jul 7

7️⃣Prix Nobels d'économie défendent un impôt minimum sur les plus riches modelé sur la taxe #Zucman.

www.lemonde.fr/idees/articl...

« Avec l’impôt sur les ultrariches, la France peut montrer la voie au reste du monde » : le plaidoyer de sept Prix Nobel d’économie pour la taxe Zucman

TRIBUNE. A l’heure de la dérive des comptes publics et de l’explosion de l’extrême richesse, créer un impôt plancher sur les patrimoines des milliardaires devrait être une priorité, estiment des lauré...

www.lemonde.fr

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ICRICT @icrict.bsky.social · Jul 1

And two became three.

#SouthAfrica joins Spain and Brazil in backing the Sevilla Platform to tax the ultra-rich and build fairer global tax systems. Because tax justice isn’t local — it’s global.

#FfD4 #TaxTheSuperRich #UNTaxConvention

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ICRICT @icrict.bsky.social · Jun 30

“Fairer taxation of large fortunes”.

Spain will work with Brazil and other countries to ensure taxation of the super-rich.

Watch Spain’s PM, Pedro Sánchez Pérez-Castejón's announcement during the launch of the Sevilla Platform for Action at #FfD4. ⤵

#TaxThePower #TaxTheSuperRich

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EU Tax Observatory @taxobservatory.bsky.social · Jul 1

"The research is clear: at the very top of the distribution, the super-rich pay less tax relative to their economic income than the rest of the population—fuelling inequality. Taxing HNWIs brings direct revenue & indirectly boosts funding by rebuilding tax consent." @qparrinello.bsky.social at #FfD4

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Quentin Parrinello @qparrinello.bsky.social · Jun 11

Olivier Blanchard, Jean Pisani-Ferry et Gabriel Zucman : « Nous partageons le constat qu’un impôt plancher sur les grandes fortunes est le plus efficace face à l’inégalité fiscale »

TRIBUNE. Le dispositif cible les centimillionnaires qui mettent en place des schémas d’optimisation pour échapper à l’impôt. Il ne fait que mettre en conformité nos lois fiscales avec le principe d’ég...

www.lemonde.fr

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EU Tax Observatory @taxobservatory.bsky.social · May 23

📢 We’re looking for an Administrative Manager to keep our team running smoothly.

If you’re organized, proactive, and thrive behind the scenes – this one’s for you.

👉 Learn more & apply: www.taxobservatory.eu/administrati...

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EU Tax Observatory @taxobservatory.bsky.social · May 21

💥 “It sounds like we should tax billionaires…”

A 2% minimum tax on the ultra-rich is the punchline with a plan: make them pay what ordinary people already do.

With growing global momentum, this is no longer just theory.

Read: www.ft.com/content/859e...

Meet the insurgent economists promoting a global wealth tax

Gabriel Zucman is leading a movement for billionaires to pay at least 2 per cent of their net worth each year

www.ft.com

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EU Tax Observatory @taxobservatory.bsky.social · May 19

💡 Mesurer l’évitement fiscal & environnemental:

Notre collègue @mathieupar.bsky.social, finaliste du Prix du meilleur jeune économiste 2025, revient sur le pouvoir de marché des multinationales, l’optimisation fiscale et la taxe carbone aux frontières.

@lemonde.fr 👇 www.lemonde.fr/economie/art...

Mathieu Parenti : « Mesurer l’évitement fiscal et environnemental »

A 39 ans, ce professeur à l’Ecole d’économie de Paris et chercheur à l’Inrae s’intéresse au commerce international et au rôle des grandes entreprises dans la mondialisation.

www.lemonde.fr

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EU Tax Observatory @taxobservatory.bsky.social · May 13

"We want rich individuals to pay as much as the rest of the population. This is not a radical idea. The proposal made by Brazil at the G20 is not a wealth tax — it’s a top-up tax targeting a much smaller, wealthier group who currently avoid other taxes." 💬 @qparrinello.bsky.social

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Quentin Parrinello @qparrinello.bsky.social · May 6

En Europe, les multinationales paient moins d'impôts qu'il y a 10 ans. Pourquoi?

Découvrez notre dernière note avec @julesducept.bsky.social & Sarah Godard pour @taxobservatory.bsky.social qui met en lumière les nouveaux visages de la compétition fiscale des multinationales.

EU Tax Observatory @taxobservatory.bsky.social · May 6

1/ 📉 Multinational companies in the EU are paying less tax now than they did a decade ago. But why?

Our new policy note reveals that the average effective tax rate of MNEs in the EU dropped 2.7 percentage points from 2014 to 2022.

🔎 For more insights: www.taxobservatory.eu/publication/...

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Reposted by Quentin Parrinello

EU Tax Observatory @taxobservatory.bsky.social · May 6

1/ 📉 Multinational companies in the EU are paying less tax now than they did a decade ago. But why?

Our new policy note reveals that the average effective tax rate of MNEs in the EU dropped 2.7 percentage points from 2014 to 2022.

🔎 For more insights: www.taxobservatory.eu/publication/...

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EU Tax Observatory @taxobservatory.bsky.social · Apr 29

"Scientific evidence is clear: tax progressivity drops at the top, eroding trust and domestic revenue mobilization. As we head to #FfD, it’s vital that fair taxation of HNWIs remains front and center — and that we build coalitions of the willing to advance the agenda." 💬 @qparrinello.bsky.social

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Gabriel Zucman @gabrielzucman.bsky.social · Apr 29

Delighted to be at the EU Council today to talk about own resources for the EU

We need a minimum tax on ultra-high net worth individuals

We know we can do it

And it would generate a lot of (much needed) revenue!

www.taxobservatory.eu//www-site/up...

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Gabriel Zucman @gabrielzucman.bsky.social · Apr 23

$1 Trillion of Wealth Was Created for the 19 Richest U.S. Households Last Year

www.wsj.com/economy/1-tr...

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Wouter Leenders @leenders.bsky.social · Apr 17

Just finished teaching a class on taxation in the Economics and Public Policy master's at @sciencespo.bsky.social.

My slides, heavily inspired by courses by Charles Brendon, @gabrielzucman.bsky.social, and Emmanuel Saez, are here:

👉 wouterleenders.eu/KAFP3355/06_...

Feedback very welcome!

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