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Informal one-sided target zone model and the Swiss franc

Yu-Fu Chen, Michael Funke and Richhild Moessner

No 660, BIS Working Papers from Bank for International Settlements

Abstract: This paper develops a new theoretical model with an asymmetric informal one-sided exchange rate target zone, with an application to the Swiss franc following the removal of the minimum exchange rate of CHF 1.20 per euro in January 2015. We extend and generalize the standard target zone model of Krugman (1991) by introducing perceived uncertainty about the lower edge of the band. We find that informal soft edge target zone bands lead to weaker honeymoon effects, wider target zone ranges and higher exchange rate volatility than formal target zone bands. These results suggest that it would be beneficial for exchange rate policy intentions to be stated clearly in order to anchor exchange rate expectations and reduce exchange rate volatility. We also study how exchange rate dynamics can be characterized in models in which financial markets are aware of occasional changes in the policy regime. We show that expected changes in the central bank's exchange rate policy may lead to exchange rate oscillations, providing an additional source of exchange rate volatility, and to capture this it is important to take into account the possibility of regime changes in exchange rate policy.

Keywords: Swiss franc; target zone model; exchange rate interventions (search for similar items in EconPapers)
JEL-codes: F31 E42 C61 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-cba, nep-eec, nep-mac and nep-mon
Date: 2017-08
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