Optimal Target Zones: How an Exchange Rate Mechanism Can Improve Upon Discretion
Using Krugman's (1991) target zone model, we find an explicit, sub-game perfect solution for a central bank wishing to stabilize the exchange rate given proportional costs of intervention. We demonstrate, however, that precommitment to narrower bands would yield a welfare gain - which provides a theoretical rationale for an Exchange Rate Mechansim (ERM). Numerical simulations suggest that the optimal currency band with precommitment via an ERM is only half as wide as that under discretion.
|Date of creation:||Oct 1994|
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- Paul R. Krugman, 1991. "Target Zones and Exchange Rate Dynamics," The Quarterly Journal of Economics, Oxford University Press, vol. 106(3), pages 669-682.
- Svensson, Lars E O, 1992.
"Why Exchange Rate Bands? Monetary Independence in Spite of Fixed Exchange Rates,"
CEPR Discussion Papers
742, C.E.P.R. Discussion Papers.
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- Lars E.O. Svensson, 1992. "Why Exchange Rate Bands? Monetary Independence in Spite of Fixed Exchange Rates," NBER Working Papers 4207, National Bureau of Economic Research, Inc.
- Svensson, L.E.O., 1992. "Why Exchange Rate Bands? Monetary Independence in Spite of Fixed Exchange Rates," Papers 521, Stockholm - International Economic Studies.
- Lars E. O. Svensson, 1990.
"Target Zones and Interest Rate Variability,"
IMF Working Papers
90/31, International Monetary Fund.
- Svensson, L.E.O., 1989. "Target Zones And Interest Rate Variability," Papers 457, Stockholm - International Economic Studies.
- Svensson, Lars E O, 1990. "Target Zones and Interest Rate Variability," CEPR Discussion Papers 372, C.E.P.R. Discussion Papers.
- Lars E.O. Svensson, 1989. "Target Zones and Interest Rate Variability," NBER Working Papers 3218, National Bureau of Economic Research, Inc.
- Daniel Cohen & Philippe Michel, 1988. "How Should Control Theory Be Used to Calculate a Time-Consistent Government Policy?," Review of Economic Studies, Oxford University Press, vol. 55(2), pages 263-274.
- Kydland, Finn E & Prescott, Edward C, 1977. "Rules Rather Than Discretion: The Inconsistency of Optimal Plans," Journal of Political Economy, University of Chicago Press, vol. 85(3), pages 473-491, June.
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