We assess the effects of U.S. tax policy reforms on inequality by applying a new decomposition method allowing us to disentangle the policy effect from changing market incomes. Over the period 1979-2007, the cumulative policy effect aggravated inequality by increasing the income share of the top...

The income share of the top one percent of the population in the United States has increased from a little over nine percent of national income in the 1970s to 22.46 percent in 2012- a 144 percent increase. What is driving this astronomic growth in incomes for some? Is it possible the result of...