Optimal monetary policy in open economies revisited

• 成果类型: Article
• 署名作者: Fujiwara, Ippei; Wang, Jiao
• 署名单位: Keio University; Australian National University; University of Melbourne
• 刊物名称: JOURNAL OF INTERNATIONAL ECONOMICS
• ISSN/ISSBN: 0022-1996
• DOI: 10.1016/j.jinteco.2017.07.006
• 发表日期: 2017
• 页码: 300-314
• 关键词: Optimal monetary policy; Noncooperative game; local currency pricing

摘要

This paper revisits optimal monetary policy in open economies, in particular, focusing on the noncooperative policy game under local currency pricing in a two-country dynamic stochastic general equilibrium model. We first derive the quadratic loss functions which noncooperative policy makers aim to minimize. Then, we show that noncooperative policy makers face extra trade-offs regarding stabilizing real marginal costs induced by deviations from the law of one price under local currency pricing, and that optimal monetary policy seeks to stabilize CPI inflation rates and more so under noncooperation than it does under cooperation. As a result of the increased number of stabilizing objectives, welfare gains from cooperation emerge even when two countries face only technology shocks. Still, gains from cooperation are not large, implying that frictions other than nominal rigidities are necessary to strongly recommend cooperation as an important policy framework to increase global welfare. (C) 2017 Elsevier B.V. All rights reserved.