Currency boards, dollarized liabilities, and monetary policy credibility

The recent collapse of the Argentine currency board raises new questions about the desirability of formal fixed exchange rate regimes. This paper examines the relative performance of a currency board with costly abandonment in the presence of dollarized liabilities to a fully-discretionary regime. Our results demonstrate that neither regime necessarily dominates with only idiosyncratic firm shocks, but discretion unambiguously dominates with the addition of shocks to the dollareuro rate. The relatively strong performance of the discretionary regime in this model stems from the benign impact of dollarized liabilities on the monetary authorityʹs time-inconsistency problem.