Séminaire de Carolina Moreno Flórez

Séminaire de Carolina Moreno Flórez

Le 16 décembre 2025

Le prochain séminaire du GAINS se tiendra le 16 décembre 2025 de 10h30 à 12h00 dans la salle T204. Carolina Moreno Flórez (Le Mans Université) présentera « Looking for optimality while reducing inequalities? The role of transfers in an income redistribution system ».

Abstract: We study optimal redistribution in an economy with a hybrid system of social protection, reflecting the coexistence of social insurance (Bismarckian transfers) and social assistance (Beveridgean transfers). What does optimal taxation look like when it is used to finance such assistance and insurance programs, considering the interplay between exogenous (luck) and endogenous (effort) factors in income determination? To address this question, we use a Mirrleesian framework in which a government, reflecting society's aversion to inequality, maximizes social welfare by choosing a progressive tax schedule under private information about households' productivities. We analyze the trade-offs involved in designing a system that is both redistributive and efficient. Our analysis proceeds in two stages. First, we characterize the optimal taxation rate. Second, we study how social and insurance programs affect optimal taxation by comparing different public spending regimes that vary in their composition between transfers and exogenous public spending. We show that optimal redistribution depends solely on the ex ante level of inequality and society's aversion to inequality. At the margin, the optimal marginal tax schedule adjusts to the level of Bismarckian transfers in order to satisfy the optimal marginal redistribution rate, while Beveridgean transfers pin down the level of the tax schedule. Overall, transfers are welfare-improving.

Pour ceux qui ne peuvent pas venir en présentiel, voici un lien zoom:

https://univ-lemans-fr.zoom.us/j/96021229903?pwd=s4sABSpiaTjg7kCgLEIjaCs3r9ylP8.1

Meeting ID: 960 2122 9903
Passcode: 802470