Welfare Costs of Inflation and the Circulation of US Currency Abroad

Abstract

Empirical studies of the shoe-leather costs of inflation are typically computed using M1 as a measure of money. Yet, official data on M1 includes all currency issued, regardless of the country of residence of the holder. Using adjusted monetary data, we show that the failure to control for currency held by non residents may lead to significantly overestimating the welfare costs for the domestic economy. In particular, our estimates of shoe-leather costs are minimized for a positive but moderate value of the inflation rate, thereby justifying a deviation from the Friedman rule in favor of the Fed’s current policy.