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Working Paper

The Inherent Benefit of Monetary Unions

Authors

  • Groll
  • D.
  • Monacelli
  • T.

Publication Date

JEL Classification

E52 F33 F41

Key Words

commitment

discretion

flexible exchange rates

Monetary union

nominal rigidities

welfare losses

Related Topics

Monetary Policy

European Union & Euro

Business Cycle Euro Area

Business Cycle

Europe

The desirability of flexible exchange rates is a central tenet in international macroeconomics. We show that, with forward-looking staggered pricing, this result crucially depends on the monetary authority's ability to commit. Under full commitment, flexible exchange rates generally dominate a monetary union (or fixed exchange rate) regime. Under discretion, this result is overturned: a monetary union dominates flexible exchange rates. By fixing the nominal exchange rate, a benevolent monetary authority finds it welfare improving to trade off flexibility in the adjustment of the terms of trade in order to improve on its ability to manage the private sector's expectations. Thus, inertia in the terms of trade (induced by a fixed exchange rate) is a cost under commitment, whereas it is a benefit under discretion, for it acts like a commitment device.

Kiel Institute Expert

  • Dr. Dominik Groll
    Kiel Institute Researcher

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