Since 1980, the incomes of the very rich have grown faster than the economy. The upper middle class has kept pace with the economy, while the middle class and poor have fallen behind.
[...]On one side are people who argue that the bourgeois professional class — essentially, households with incomes in the low-to-mid six figures but without major wealth — is not so different from the middle class and poor. All of these groups are grappling with slow-growing incomes, high medical costs, student debt and so on.
The only real winners in today’s economy are at the very top, according to this side of the debate. When Bernie Sanders talks about “the greed of billionaires” or Thomas Piketty writes about capital accumulation, they are making a version of this case.
[...] there is the upper middle class, defined here as the 90th to 99th percentiles of the income distribution (making roughly $120,000 to $425,000 a year after tax). Their income path doesn’t look like that of either the first or second group. It’s not above the line or below it. It’s almost directly on top of it. Since 1980, the incomes of the upper middle class have been growing at almost the identical rate as the economy.
[...] Politicians should recognize that there are three broad income groups, not just two. The bottom 90 percent of Americans does deserve a tax cut, to lift its stagnant incomes. The top 1 percent deserves a substantial tax increase. The upper middle class deserves neither. Its taxes should remain roughly constant, just as its share of economic output has.