Is GDP more volatile in developing countries after taking the shadow economy into account? Evidence from Latin America

Why is GDP more volatile in developing countries? In this paper we propose an explanation that can account for the substantial differences in the volatility of measured real GDP per capita between developing and developed countries. Our explanation involves the often overlooked fact that developing economies have a sizable shadow economy. We build a two-sector model that distinguishes between measured (formal) and total (formal and shadow) outputs; using data from Latin America, our model results suggest that developing and developed economies are fairly similar in terms of the volatility of total real GDP. We also document an apparent puzzle, in that the model suggests that the volatility of the size of the shadow economy should be substantially larger than what is observed in the real world. We believe that this may be indicative of frictions that prevent agents from optimally moving between the formal and shadow economies.