This paper studies the effects that conventional and unconventional monetary policies generate when endogenous growth, trend inflation and financial frictions are considered in a New Keynesian macroeconomic model. Financial variables play a key role in the determination of the steady state growth rate, given the value of the trend inflation. Calibrating the model following Gertler and Karadi (2011), long-run growth rate, welfare, normalized investment and financial wealth are maximized when trend inflation is 1.7% while leverage, external finance premium and marginal gain of the financial intermediaries are minimized. Finally, unconventional policies could extend their impact to the long run