Journal Article

The Inherent Benefit of Monetary Unions


  • Groll
  • D.
  • Monacelli
  • T.
Publication Date

If the monetary authority lacks commitment, a monetary union can dominate flexible exchange rates. With forward-looking staggered pricing, inertia in the terms of trade—induced by a fixed exchange rate—is a benefit under discretion, since it acts like a commitment device. By trading off flexibility in the adjustment of the terms of trade, the monetary authority improves on its ability to manage private sector’s expectations. The higher the incidence of asymmetric inefficient shocks, and/or the higher the degree of nominal price rigidity, the greater the inherent benefit of monetary unions, in stark contrast to the traditional optimum currency area theory.

Kiel Institute Expert


JEL Classification
E52, F33, F41

Key Words

  • commitment
  • discretion
  • flexible exchange rates
  • Monetary union
  • nominal rigidities
  • welfare losses