The declining impact of U.S. income taxes on wealth inequality: A growing number of papers measuring U.S. wealth inequality and its continuing growth were published over the past year. One of those key papers, by economists Emmanuel Saez of the University of California-Berkeley and Gabriel Zucman of the London School of Economics, finds that the share of wealth held by the top 0.1 percent of families in the United States grew from about 7 percent in the late 1970s to 22 percent in 2012. Yet it’s important to note that Saez and Zucman’s results and similar estimates look at the distribution of wealth before accounting for the impact of taxation. A new paper looks at the post-tax distribution of wealth and finds that the federal income tax system is doing significantly less to reduce wealth inequality than in the past. And there are signs that the federal tax system in recent years might actually be increasing wealth inequality.
The paper by economists Adam Looney at the Brookings Institution and Kevin B. Moore at the U.S. Federal Reserve looks at trends in wealth inequality from 1989 to 2013 using data from the Fed’s Survey of Consumer Finances. ...
Looney and Moore’s analysis is, as they note, the first attempt to analyze trends in post-tax wealth inequality. So their paper is just the beginning of the investigation into this area. But if their results hold up they would have strong implications for how we think about the tax code and wealth inequality.