Monetary Policy Rules and Exchange Rates:A Structural VAR Identified by No Arbitrage
Expected exchange rate changes are determined by interest rate differentials across countries and risk premia, while unexpected changes are driven by innovations to macroeconomic variables, which are amplified by time-varying market prices of risk. In a model where short rates respond to the output gap and inflation in each country, I identify macro and monetary policy risk premia by
specifying no-arbitrage dynamics of each country's term structure of interest rates and the exchange rate. Estimating the model with US/German data, I find that the correlation between the model-implied exchange rate changes and the data is over 60%. The model implies a countercyclical foreign exchange risk premium with macro risk premia playing an important role in matching the
deviations from Uncovered Interest Rate Parity. I find that the output gap and inflation drive about 70% of the variance of forecasting the conditional mean of exchange rate changes
exchange rate, monetary policy,term structure, no arbitrage
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