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Economic Research: How Increasing Income Inequality Is Dampening U.S. Economic Growth, And Possible Ways To Change The Tide Not Just The Fruits Of Our Labor Though the share of income from labor and capital, excluding capital gains, has decreased, the share coming from capital gains and business income has increased over time. In particular, inherited wealth has increased since the World Wars and the Great Depression, as Thomas Piketty has shown (14), and with it the earnings from that wealth. This trend is important because labor income tends to be distributed across income levels more evenly than capital gains--so a shift in income composition can significantly affect inequality. While labor income accounted for nearly three-fourths of market income from 1979-2007, that figure had dropped to two-thirds by 2007. Capital income (excluding capital gains) is the next largest source, but even at its 1981 peak, it represented only 14% of market income before falling to about 10% of total income in 2007. Conversely, income from capital gains rose, doubling to approximately 8% of market income in 2007 from about 4% in 1979. Business income and income from other sources (primarily private pensions) each accounted for about 7% of total income in 2007, up from about 4% each. In addition, capital income has become increasingly concentrated since the early 1990s--and, despite declines in 2001 and 2002, concentration spiked from 2003 through 2007, with more than 80% of the capital gains realized by the top 5% of earners going to the top 1% alone (15). Capital gains also have become increasingly concentrated and are tied with business income as the most concentrated income source. The Impact Of Government Policy Government policies on taxation and government transfers, such as Social Security and Medicare, have done little to reduce income inequality--and may have contributed to a further widening of the gap. Because government transfers and federal taxes are progressive, the distribution of net household income (after transfers and federal taxes) is more evenly balanced than the distribution of market income. That said, at the federal level, the equalizing effect of transfers and taxes on household income was smaller in 2007 than it had been in 1979. The CBO estimates that the dispersion of market income grew by about one-quarter from 1979-2007, but the dispersion of after-tax income grew by about one-third (16). The distribution of after-tax income in 2010 became slightly more even among different groups than before-tax income, though the dispersion of after-tax income in 2010 remained wider than in 1979 (see chart 2) (17). WWW.STANDARDANDPOORS.COM/RATINGSDIRECT AUGUST 5, 2014 7 1351366 | 302136118 HOUSE_OVERSIGHT_025769