Ségal Le Guern Herry

Assistant Prof of Economics at @amseaixmars

[Anticor @anticor_org]

Eric Alt, administrateur d’Anticor, remet un #prixéthique à l’économiste @gabriel_zucman pour son travail sur les inégalités sociales et fiscales. #Prixéthiques2026

[Gabriel Zucman @gabriel_zucman]

Bonjour cher @Senat

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 »

https://t.co/Wt5o1PRi3j

[Gabriel Zucman @gabriel_zucman]

Quelle est l'ampleur de l'exil fiscal?

Cette excellente vidéo de l'économiste @LghSegal, récompensée par la @citeco_officiel, passe en revue la littérature sur le sujet

Avec une conclusion très claire: exil pas nul, mais très faible

@EmmanuelMacron

https://t.co/0lZVzuRYk9

[International Tax Observatory @taxobservatory]

💰 How can we ensure billionaires pay their fair share?

Join top researchers, legal experts & policymakers for a 2-day deep dive into #TaxingBillionaires—exploring methodologies, sharing research insights, and discussing policy solutions.

🔗 More info: https://t.co/9UW4fs6fA2

[Eva Davoine @EvaDavoine]

🚨New working paper🚨
“The Political Costs of Taxation” with
@EnguehardJoseph & @IgorKol52824963

When a state has low capacity and legitimacy, attempts to enforce unfair taxation can fuel social conflict!

Some key findings:
🧵 1/10

[International Tax Observatory @taxobservatory]

📢 Call for Papers - submission deadline 14 March

🎓 Workshop on the Economics of Taxation
🗓️ 3-4 June
📍 Barcelona

Topics: corporate tax, inequality, offshore wealth & more.

🗣️ Keynotes: @DinaPomeranz (@UZH_en) & @y_benzarti (UC Santa Barbara)

👉 https://t.co/oeVJ5kR0GJ

[Jeffrey Yusof @yusof_jeff]

🚨Job Market Paper Alert 🚨

A significant part of inequality stems from market forces beyond individual control - what we call *market luck*.

In meritocratic societies, this raises a key question: Do people perceive these inequalities as fair?

Read on to learn more. 👇
[1/14]

[Gabriel Zucman @gabriel_zucman]

Le PLF, article 3, introduit un impôt minimum de 20% sur les très riches

En l’état cette mesure rapporterait assez peu, 2 milliards au plus

Mais avec de petites améliorations, elle pourrait rapporter 10 x plus, et changer radicalement l’équation budgétaire

Voici comment 🧵

[Elvin Le Pouhaër @LePouhaer]

1/ 📰Our impact assessment of the @OECD Pillar One Amount A has recently been published in @ITAXjournal
w/ @MonaBarake

Who are the winners/losers from this partial implementation of global formulary apportionment?🧶

#TaxReform #PillarOne

👉https://t.co/64ac49ge0j

[AMSE → 🦋 @amseaixmars.bsky.social @amseaixmars]

🎙️ Presse | Les ultra-riches fuient-ils l’impôt ? les chercheurs Ségal Le Guern Herry @amseaixmars et Camille Herlin-Giret @CerapsLille s'interrogent dans @EntendezvousEco @franceculture

@LghSegal https://t.co/oWsPnAq6Sj

[Florian Scheuer @Florian_Scheuer]

Join us tomorrow for a full day of exciting talks on inequality and taxation at the @EEANews @erasmusuni!

11am @AxelleFerriere @A_Ferey @nicolas_werquin Matias Bayas-Erazo @NUEconomics

2pm @AndreasFagereng and myself

4pm @cmtneztt @MathildeMunoz @arunadvaniecon @LghSegal

[IIPF - International Institute of Public Finance @IIPF_org]

One IIPF Young Economists Award goes to Sebastien Laffitte (Cy Cergy-Paris University, France) for his paper "The Market for Tax Havens" presented at #IIPF2024.

[Gabriel Zucman @gabriel_zucman]

Thrilled to release this report commissioned by the Brazilian G20 Presidency today

Just like we have a minimum tax on multinationals, we need a minimum tax on the world's super-rich—and it has become technically feasible

🧵with the main findings and proposals

[Jakob Miethe @JakobMiethe]

With @gabriel_zucman, we recently won a grant from the German & French research agencies to produce scientific papers increasing transparency in international real estate investments. If you want to look through international ownership structures with us, apply @PSEinfo!

[AMSE → 🦋 @amseaixmars.bsky.social @amseaixmars]

AMSE Seminar | Wealth Taxation and Portfolio Allocation

🗣️Ségal Le Guern Herry (@LghSegal), @ScPoEcon
📅February 8, 11:30am to 12:45pm
📍AMSE, Marseille
➡️https://t.co/7cl8435EXV

📷tanoy1412/Adobe Stock

[Gabriel Zucman @gabriel_zucman]

Three more weeks to apply to our UC Berkeley Summer School on Inequality

Top-notch teachers, 25 PhD students from all over the world, and completely free!

https://t.co/isM0lAsCxX

[Recherche SciencesPo @ScPoResearch]

Hommage à Philippe Martin, professeur des universités @sciencespo, membre @ScPoEcon , doyen de @EAPScPo
Economiste reconnu internationalement, respecté et aimé par ses étudiants, il faisait preuve de discernement et de courage en toute circonstance
https://t.co/fFNWCi9j8R

[Amory Gethin @amorygethin]

Global poverty is commonly measured by counting the number of people whose consumption falls below a given threshold.
This approach overlooks an enormous component of people’s economic well-being: public goods. 🧵

[Ségal Le Guern Herry @LghSegal]

Huge thanks to my advisors @gabriel_zucman and Jean-Marc Robin as well as Niels Johannesen, Emmanuel Saez, @annette_als and many others for their guidance and support

[Ségal Le Guern Herry @LghSegal]

Can property taxes work as a corrective tool to foster investment in financial assets?

I provide answers in my job market paper “Wealth Taxation and Portfolio Allocation”

A short 🧵

#EconTwitter #EconJobMarket

[Ségal Le Guern Herry @LghSegal]

Interested? Much more in the paper here:
https://t.co/UCZBoqtFx9