By the mid 1990s the potential and usefulness of microsimulation models for researching tax benefit systems had found widespread acceptance. Nevertheless models were not widely available for independent or academic research in all countries of the European Union (EU). Even more important,...

In empirical analysis, the Kakwani index is the most frequently used indicator for comparing progressivity across countries and over time. The Kakwani is often assumed to measure to what extent a policy design is targeted to the poor. It has, however, a major drawback: it is not defined for net...