A MODEL OF INFLATION TRANSMISSION IN AN EXCHANGE RATE TARGET ZONE
Kevin C. Chua
Bulletin of Economic Research, 2018, vol. 70, issue 3, 285-297
I incorporate an exchange rate target zone with intramarginal interventions in a small open economy model. Using the method of undetermined coefficients, I solve for the price level and the nominal exchange rate to determine how price shocks from the large economy affect the small open economy. The results show that the behaviour of inflation transmission within the band differs from the behavior of inflation transmission at the edge of the band of the target zone. Foreign shocks can affect local prices in both cases but the central bank can respond through market interventions within the band while it cannot do so at the edge. Near the edge of the band, a central bank has to intervene to stop the exchange rate from breaching the band. My model predicts that if the interventions are robust, then the exchange rate is mean reverting and an exchange rate target zone can insulate an economy from foreign price shocks. Based on the model, central bank interventions contribute to long‐run price stability in a target zone regime. Finally, I empirically test the model using unit root and cointegration tests, and present some policy implications.
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