Investigate effect of interaction monetary and fiscal policies on economic growth in Iran

The main objective of this paper is to find the optimal model of the monetary and fiscal policy tool for economic growth. Accordingly, we used four models with different combinations of liquidity to provide an optimal model for determining the optimal combination of monetary and fiscal policy in the short term and long-term results, and show how the optimal tools for optimal combination monetary and fiscal policies lead to economic growth. In all of these models, the ARDL method has the effect of monetary policy through terms such as the volume of banknotes and coins, the volume of long-term deposits, the rate of interest on long-term deposits, exchange rates and fiscal policies through variables such as public revenues and public expenditure on growth Real gross nominal production for the period 1978-2017 is analyzed and the moderation rate of each model is analyzed. The results show that combination No. 4 is accepted in both short and long term terms, both monetary and fiscal policies are effective in sustained economic growth.