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External Shocks and Monetary Policy: Does it Pay to Respond to Exchange Rate Deviations?

  • Rodrigo Caputo

There is substantial evidence suggesting that central banks in open economies react to exchange rate fluctuations in addition to expected inflation and output. In some developing countries this reaction is comparatively larger and it is nonlinear. Using an estimated structural macromodel, this paper assesses the advantages and potential costs of adopting such a reaction function. We conclude that, in the face of most of the external shocks, a policy rule that responds to exchange rate misalignments smooths inflation and output variability, while marginally increasing interest rate fluctuations. On the other hand, for some domestic innovations such a rule performs poorly. When all the shocks are considered at the same time, this rule generates important welfare gains. Finally, when the volatility of external shocks rises, increasing the response to exchange rate misalignments brings welfare improvements. In fact, a more aggressive response to the exchange rate offsets the impact that greater external volatility has on output and inflation, at the cost of inducing higher interest rate fluctuations. In this way, one can interpret the nonlinear reaction to the exchange rate as an optimal response to a more volatile external environment

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Paper provided by Econometric Society in its series Econometric Society 2004 Australasian Meetings with number 300.

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Date of creation: 11 Aug 2004
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Handle: RePEc:ecm:ausm04:300
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