This paper develops an endogenous growth model of money and banking with imperfect competition in good markets to analyze the effects of banking efficacy and fiscal policies on inflation and economic growth. Our main finding is that a decrease in the interest incomes tax, a lower money growth rate, a decline in reserve requirement ratio, an enhancement of banking efficacy, and more competitive good markets will reduce the inflation, but raise the economic growth rate. However, the changes in capital incomes tax and consumptions tax have no effects on economic growth and inflation. Moreover, we also find that the effectiveness of fiscal and monetary policies is magnified in a more competitive good market.