High Quality Content by WIKIPEDIA articles! Fiscal policy and monetary policy are the two tools used by the State to achieve its macroeconomic objectives. While the main objective of fiscal policy is to increase the aggregate output of the economy, the main objective of the monetary policies is to control the interest and inflation rates. The celebrated IS/LM model is one of the models used to depict the effect of interaction on aggregate output and interest rates. The fiscal policies have an impact on the goods market and the monetary policies have an impact on the asset markets and since the two markets are connected to each other via the two macrovariables — output and interest rates, the policies interact while influencing the output or the interest rates.