Tax evasion in Italy : an analysis using a tax-benefit microsimulation Model

Abstract

In this paper, the authors use a direct method to estimate tax evasion in Italy assuming that tax evaders might consider declaring a closer-to-true income in an anonymous interview. The methodology is applied to work income only, as pension income cannot be hidden to tax authorities and capital income is measured with large error in available survey data sets. The data sets considered are the 1998 and 2000 Survey of Household Income and Wealth (SHIW) by the Bank of Italy and the 1998 and 2000 tax forms table produced by Servizio Consultivo ed Ispettivo Tributario (SeCIT). Posing particular attention to the post-stratification of the data, the authors find that tax evasion is consistently higher for self-employment income than for employment income and it is larger at bottom deciles, although some under-sampling problems need to be considered. The pattern of work income concealment found, shows that personal income tax evasion reduces the average tax rate but it also increases the progressivity of the tax system. This result is, however, driven by the large values of income avoidance found in bottom deciles, which might be due to the under-sampling of income receivers with the poorest income. The results are consistent across the two years considere