The U.S. Census Bureau has released The Effects of Taxes and Transfers on Income and Poverty in the United States: 2006. Here is the abstract:
These estimates of income and poverty for various demographic groups use a series of alternative income definitions that take into account government taxes and transfers. These estimates show how income distributions change when the definition of income is varied to reflect the inclusion or exclusion of different components.
(Hat Tip: Jon Forman.)
