How Costly are Cartels?

How Costly are Cartels?

 

Flavien Moreau

International Monetary Fund (IMF)

Ludovic Panon

Bank of Italy

Abstract

We study the cost of cartels in an oligopoly model with heterogeneous firms, endogenous markups, and collusion. Cartels can amplify or dampen misallocation, by charging supracompetitive markups and reallocating demand towards non-colluding firms. We find that standard competitive oligopoly models understate the cost of markups under reasonable values for the intensity of collusion and cartel composition configurations. Using French micro data, our baseline calibration suggests that breaking down cartels would increase aggregate productivity by 1.1% and welfare by 2%. These numbers shed light on the aggregate importance of collusion.