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A Review of Wagner's Law and Income Elasticity of the Government Expenditures in Iran (1985-2018)

Wagner's Law holds that the relative size of public sector increases with the growth of per capita income. The aim of this study is to investigate the validity of Wagner’s Law in Iran. We test the Wagner’s Law by incorporating a vector Autoregression model (VAR) and vector error correction model (VECM) for the Iranian economy using 1985-2018 health and education data. The results of the estimates show that this law holds in Iran. The elasticity of government expenditures with respect to national income must be greater than one for the Wagner’s law to hold. However, government spending on health and education have been less than expected. This could suggest that the state does not pay enough attention to health and education. One can conclude that health and education are not priorities of the government in allocating funds to these two sectors.