Jonathan Goupille-Lebret

jonathan.goupille-lebret (at)ens-lyon.fr

Affiliations:

CNRS Research Associate Professor at GATE-LSE, Univ. Lyon

Associate Professor, Department of Economics, ENS de Lyon

CEPR and CESifo Research Affiliate

World Inequality Lab Research Fellow


Research:

Work in Progress

AVAILABLE SOON: Wealth Tax and Information Disclosure Requirements, with Bertrand Garbinti, Mathilde Munoz, Stefanie Stantcheva and Gabriel Zucman

Abstract: Using exhaustive administrative wealth tax returns in France, we show that taxpayers do not respond to changes in wealth tax rates but strongly react to opportunities to hide information on the type of wealth they own. Combining a set of reforms that dramatically changed wealth information disclosure requirements with both dynamic bunching and difference-in-differences approaches, we estimate behavioral responses to information discontinuities in the wealth tax schedule. Implementing low information options in wealth tax returns causally decreased declared wealth growth rate by 0.4 percentage points each year on average, and by 4 percentage points for those taking-up the opportunity to hide wealth information after the reform. We build a theoretical framework that rationalizes the observed differences between individuals who self-select into the low-information option.

NEW: Markups, Taxes, and Rising Inequality, with Stephane Auray, Aurelien Eyquem and Bertrand Garbinti

Abstract: How to explain rising income and wealth inequality? We build an original heterogeneous- agent model with three key features: (i) an explicit link between firm’s market power and top income shares, (ii) a granular representation of the tax and transfer system, and (iii) three assets with endogenous portfolio decisions. Using France as an illustration, we look at how changes in markups, taxes, factor productivity, and asset prices affect inequality dynamics over the 1984-2018 period. Rising markups account for the bulk of rising income inequality. Wealth inequality dynamics result mostly from changes in saving rate inequality but only in response to the exogenous changes in taxation and markups. Our results point to the critical importance of endogenous saving decisions in response to exogenous shocks as a key driver of wealth inequality.

Working Papers:


REVISED 2022: Predistribution vs. Redistribution: Evidence from France and the U.S., with Antoine Bozio, Bertrand Garbinti, Malka Guillot, and Thomas Piketty, CEPR DP15415. Revisions Requested by AEJ: Applied Economics

Abstract: We construct series of post-tax income for France over the 1900-2018 period and compare them with U.S. series. We quantify the extent of redistribution and estimate the impact of redistribution vs pretax inequality on post-tax inequality. We obtain three major findings. First, redistribution has increased in both countries to reach similar levels today. Second, the long-run decline in post-tax inequality in France is due mostly to the fall in pretax inequality. Third, the relative lower post-tax inequality in France is entirely explained by differences in pretax inequality. This suggests that more attention should be paid to policies affecting pretax inequality. [Old 2018 WP]

with Facundo Alvaredo, Anthony B. Atkinson, Thomas Blanchet, Lucas Chancel, Luis Bauluz, Matthew Fisher-Post, Ignacio Flores, Bertrand Garbinti, Clara Martínez-Toledano, Marc Morgan, Theresa Neef, Thomas Piketty, Anne-Sophie Robilliard, Emmanuel Saez, Li Yang and Gabriel Zucman, PSE Research report, 2020


Publications:







Articles in French:

Dissemination of scientific knowledge:

in English:

in French:

Co-organizer of the workshops EconNomicSday at "ENS de Lyon"

https://en.economics-ens-lyon.com/workshops-economicsday