This paper analyzes the changes in the monetary policy transmission mechanism in Peru. A strong conclusion that emerges from this research is that both, the direct interest rate channel and the expectations channel have become more important in the recent years, especially after the Inflation Targeting adoption. The research further explores the implications of financial dollarization for the practice of monetary policy by performing two exercises. First, it compares different degrees of exchange rate flexibility and finds out that the more flexible the exchange rate is, the quicker but weaker the exchange rate pass-through becomes. Second, since financial dollarization may trigger contractionary depreciations, the document studies implications for monetary policy. The conclusion is that the effectiveness of monetary policy can be further improved if the economy becomes less dollarized.