International price dispersions of the Big Mac and economic integration

Abstract

McDonald's Big Mac hamburger is available all over the world, and its recipe and quality are almost identical around the world and have changed little over time. However, Big Mac prices are widely disparate even across countries with more similar per capita incomes. This fact would be amazing because world tariff levels have been falling steadily and world trade volumes have been increasing dramatically in recent decades. We pay attention to the situation of international goods markets' integration and attempt to clarify why the deviations from absolute Big Mac parity are common across countries. To summarize our main results, global price dispersion of the Big Mac did not decrease although per capita income dispersion reduced. On the other hand, price dispersions of the Big Mac decreased within countries where trade ties are strong. These results suggest that Big Mac prices of countries in the world converge to several levels and that existence of trading bloc accounts for deviations from absolute Big Mac parity to some extent.