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Pegged Exchange Rate Regimes – A Trap?
Joshua Aizenman, University of California, Santa Cruz
Reuven Glick, Federal Reserve Bk. of San Francisco
ABSTRACT: This paper studies the empirical and theoretical association between the duration of a
pegged exchange rate and the cost experienced upon exiting the regime. We confirm
empirically that exits from pegged exchange rate regimes during the past two decades
have often been accompanied by crises, the cost of which increases with the duration of
the peg before the crisis. We explain these observations in a framework in which the
exchange rate peg is used as a commitment mechanism to achieve inflation stability, but
multiple equilibria are possible. We show that there are ex ante large gains from choosing
a more conservative not only in order to mitigate the inflation bias from the well-known
time inconsistency problem, but also to steer the economy away from the high inflation
equilibria. These gains, however, come at a cost in the form of the monetary authority’s
lesser responsiveness to output shocks. In these circumstances, using a pegged exchange
rate as an anti-inflation commitment device can create a “trap” whereby the regime
initially confers gains in anti-inflation credibility, but ultimately results in an exit
occasioned by a big enough adverse real shock that creates large welfare losses to the
economy. We also show that the more conservative is the regime in place and the larger is
the cost of regime change, the longer will be the average spell of the fixed exchange rate
regime, and the greater the output contraction at the time of a regime change.
SUGGESTED CITATION: Joshua Aizenman and Reuven Glick,
"Pegged Exchange Rate Regimes – A Trap?"
(September 1, 2005).
Department of Economics, UCSC.
Paper 610.
http://repositories.cdlib.org/ucscecon/610
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