A Belgian flat income tax: Effects on labour supply and income distribution

The adverse distributional effects of a flat tax are well known and have been documented by empirical research in several countries, including Belgium. Advocates of the flat tax argue, correctly, that many of these studies do not take into account agents' behavioural reactions and possible feed back effects. One of the important effects in this context is the potential increase in labour supply and the resulting increase in the taxable base and decrease in unemployment allowances. In this study we calculate the cost recovery based on a micro-simulation model that includes a labour supply model... Mehr ...