The paper deals with different concepts of income elasticities of demand for a heterogenous population and the relationship between individual and aggregate elasticities is analyzed. In general, the aggregate elasticity is not equal to the mean of individual elasticities. The difference depends on the heterogeneity of the population and is quantified by a covariance term. Sign and magnitude of ...

We define and statistically estimate a nonlinear relationship between individual effective income tax rates and economic income for United States tax return data for tax years 1979-89. The relationship, which we call the effective tax function, has three parameters and was theoretically derived from the theory of equal sacrifice by Young (1988, 1990) and more generally by Berliant and Gouveia (...

The distributional incidence of growth is generally analyzed by comparing the quantiles of the preand post-growth income distribution -e.g. the so-called Growth Incidence Curves. Such an approach based on an implicit re-ranking of individual incomes ignores income mobility by assuming that only post-growth income matters in social welfare. By contrast, this paper takes the view that "status quo...