Optimal rules for monetary policy in Brazil

2015 
This paper presents optimal rules for monetary policy in Brazil derived from a backward looking expectation model consisting of a Keynesian IS function and an Augmented Phillips Curve (IS-AS). The IS function displays a high sensitivity of aggregate demand to the real interest rate and the Phillips Curve is accelerationist. The optimal monetary rules show low interest rate volatility with reaction coefficients lower than the ones suggested by Taylor (1993a,b). Reaction functions estimated through ADL and SUR models suggest that monetary policy has not been optimal and has aimed to product rather than inflation stabilization. Este trabalho apresenta regras otimas de politica monetaria no Brasil derivadas de um modelo que consiste de uma funcao keinesiana IS e uma Curva de Phillips Aumentada (IS-AS) e com expectativas voltadas para tras. A funcao IS revela alta sensibilidade da demanda agregada a taxa de juros e a Curva de Phillips e aceleracionista. A regra otima de politica monetaria mostra reduzida volatilidade da taxa de juros com coeficientes de reacao menores do que os sugeridos por Taylor (1993a e b). Funcoes de reacao estimadas atraves de modelos ADL e SUR sugerem que a politica monetaria nao tem sido otima e tem buscado estabilizar o produto em lugar da inflacao.
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