Tax system and informal economy: a cross-country analysis

This article analyses determinants of informal economy. By using qualitative aspects of tax systems, first, we create a ‘Smithian’ tax system index based on Adam Smith’s four maxims. Then, using this index and other control variables, we study determinants of informal economy. We use unique panel data set that is constructed by using various sources. After taking into account the endogeneity of tax burden and GDP per capita, our results show that ‘Smithian’ tax system index does not significantly affect informal economy. Our results suggest that rule of law, complexity of a tax system and tax burden affect informal economy negatively, while labour market regulations affect positively.