Gholamreza Keshavarz Haddad; Esmaiel Abounoori; Tahereh Jahani
Abstract
The IMF reports that, over 60% of foreign trade income and 40% of government revenue of Iran comes from the oil and gas sectors, which has always been a source of volatilities in the economy. The imposed sanctions on the Iranian economy also influence economic activities by reducing currency earnings ...
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The IMF reports that, over 60% of foreign trade income and 40% of government revenue of Iran comes from the oil and gas sectors, which has always been a source of volatilities in the economy. The imposed sanctions on the Iranian economy also influence economic activities by reducing currency earnings and restricting access to capital and intermediaries goods. Understanding extent of the shocks’ effects of sanctions and fluctuations in oil revenue, are key factors for the policymakers in foreseeable planning risks. In order to examine the effect of sanctions and oil price(revenue) fluctuations on the country's economy, this paper intends to quantify the effects of sanction by making use of a VARMAX GARCH-in-Mean Asymmetric BEKK model in terms of structural failure of the conditional variance. We use real non-oil GDP, Iranian heavy oil exports, exchange rates, total stock market index and sanctions index data over 1991:Q2 to 2018:Q1. The results show that a shock of oil revenue or sanctions index affects activities in all of three sectors. The increasing sanctions pressure leads to a spillover effect of uncertainty to all sectors under study and a decline in production activities and national currency depreciations; but in turn the relative share of the stock market in the portfolio of investors' choice increases. Strong evidence for asymmetric effects of impulses of sanction and oil revenue on the study sections is observed.
zahra sadat raeisi gavgani; Teimour Mohammadi; farhad qhaffari; Abas Memar Nejhad
Abstract
The purpose of this paper is to investigate the existence of nonlinear effects of the fiscal policy. Specifically, the asymmetric effects of equal fiscal shocks (of government spending) on macroeconomic production variables are studied. In this regard, a Dynamic Stochastic General Equilibrium (DSGE) ...
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The purpose of this paper is to investigate the existence of nonlinear effects of the fiscal policy. Specifically, the asymmetric effects of equal fiscal shocks (of government spending) on macroeconomic production variables are studied. In this regard, a Dynamic Stochastic General Equilibrium (DSGE) model consistent with the conditions of the Iranian economy during the period 1369 – 1393 is used. We present theoretical foundations of the asymmetric effects of fiscal shocks on macroeconomic variables, then we refer to two strands of studies; the first one emphasizes nonlinearity in the effect of fiscal policy, and argues that nonlinear effects are associated with large and persistent fiscal impetus for industrial and developing countries. The second strand of studies emphasizes expectations about fiscal adjustment for debt sustainability during large fiscal adjustments rather than in normal times. The results show that the positive and negative impacts of government expenditures have asymmetric effects on macroeconomic variables. The effect of negative shock of government spending on consumption, investment and production of the private sector as well as total production is stronger, more stable, and larger. On the other hand the effect of positive government spending shock on these variables is smaller having more temporary impact.
