How Long Do Unilateral Target Zones Last?
17 Pages Posted: 15 Jan 2007 Last revised: 30 Sep 2022
Date Written: December 1991
Abstract
We examine the expected survival time of a unilateral exchange rate target zone, when constraints on monetary policy prevent the central bank from exclusively focusing on defending the target zone. Generally, the width of the target zone has a negligible effect on the expected survival time, and the dominant determinants are reserve levels and the degree of real and monetary divergence between the country in question and the rest of the world. For seemingly realistic parameters, the expected survival time is fairly long: a few decades rather than a few years.
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