Estimating of The of Government Expenditure Multiplier and The Effects of Government Expenditure Shocks in Iran's Economy and Selected Countries

The successful experiences of developed countries in applying fiscal policies to overcome the financial crisis of 2008 led to the fact that in developing countries considered impact of fiscal policy, also. Fiscal policy instruments (especially government expenditure) should attract the attention of policymakers and economic theorists in order to increase economic growth and exit the recession. The purpose of this study is to estimate of government expenditure Multiplier and to examine the effect of government expenditure shocks on GDP in Iran's economy and comparative comparisons with selected countries. In this regard, used for selected countries, the Panel Vector Auto Regression (PVAR) and Iran's economic Vector Auto Regression (VAR) model and computed the government expenditure Multiplier for each of them (in Iran (1985-2015) and selected countries (2000-2015)). The results show that a government expenditure shock in Iran and selected countries together initially increase of GDP and then a declining trend and moves in long run and the results of expenditure Multiplier confirming this. On the other hand, according to the results of the analysis of variance the high speed of the impact of government expenditure shocks on GDP is clearly visible