NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

How Long do Unilateral Target Zones Last?

Bernard Dumas, Lars E.O. Svensson

NBER Working Paper No. 3931 (Also Reprint No. r1915)*
Issued in October 1994
NBER Program(s):   ITI    IFM

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.

*Published: Journal of International Economics, 36 (1994) pp. 467-481

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