One of the most important government challenges is the environmental crisis; therefore, governments should strive to implement various policies and programs to overcome environmental problems including air pollution or the reduction of negative effects of human functions on the environment. This study has tried by using an input-output table in 1380, specifically looking at the amount of pollutants and greenhouse gas emissions, to survey the welfare and environmental effects on the green tax in consumer sectors of energy. For this purpose, using Microsoft Certified Professional (MCP) and software general algebraic modeling system (GAMS) welfare changes with and without environmental impact, changes in energy demand and changes in three pollutants CO2, SO2 and NOX in the four tax scenarios have been studied. The results of the study showed that a green tax reduces the demand for fossil fuels as intermediate input and final goods. Under the 10% tax rate on fossil fuels, welfare has decreased 47.5%, if the environmental effects are not considered. Furthermore, CO2, SO2 and NOX emissions have decreased 50.5, 60.1 and 41.5%, respectively, and welfare increased to 3%, if the environmental effects are considered.

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