Micro data from audited tax returns are used to evaluate changes in the actual progressivity of U.S. federal income taxes in 1979 and 1988, which is distinct from apparent progressivity. Statistical inference methods are applied to global measures of both actual and apparent residual and...

The traditional definition of tax progressivity is being rewritten and this change could have serious ramifications for democratic decision-making. Up to now, tax progressivity has meant that, as an individual or household earned more income, they not only paid more in taxes but also paid a...