Inequality between high and low income households decreases sharply after adjusting for taxes, household size, earners per household, and consumption
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Data from @AEI shows that income inequality btw top & bottom quintiles decreases significantly after adjusting for taxes, household size, & earners per household. Top quintile earns 6.9x more per person & 3.2x more per worker than bottom quintile.

The table and graph above were inspired by Alan Reynold’s recent post on the Cato At Liberty blog “A Different Look at After-Tax Income Inequality.” Here’s the opening of that post:
Every presidential candidate promises to “reduce income inequality” by raising tax rates on the rich and increasing transfer payments (including tax credits and in-kind benefits) for the middle class. Yet the widely used flawed data from Thomas Piketty and Emmanuel Saez exclude both taxes and transfers. Income measures that exclude taxes and transfers cannot tell us whether taxes or transfers are high or low, and cannot be directly affected by higher taxes on some or higher transfers to others (because such policies are ignored in the data).
A simple table adapted from the 2017 Consumer Expenditure Survey, from the Bureau of Labor Statistics, may be sufficient to show how crucial it is to take account of taxes (including refundable tax credits), and also to adjust average income for the different number of people and workers per household.
Note: The table above is similar to Alan’s, but is based on slightly updated BLS mid-year data for the 3rd quarter of 2017 through the 2nd quarter of 2018 for nearly 131 million consumer units (households) over the most recent year. I’ve also added annual expenditure data (last three rows) to the table above to extend Alan’s analysis. The far-right column shows the ratios of various measures of income, consumer unit characteristics, and expenditures comparing the top quintile (top 20%) to the bottom quintile (bottom 20%). Here’s more of Alan’s post updated with data in the table above:
The last column shows that the highest 20% earned 17.47 times as much as the lowest 20% before taxes, but only 13.29 times as much after taxes. But simply adjusting household income for taxes is not enough. Average incomes cannot be properly compared between the highest and lowest quintiles because there are nearly two times as many people per consumer unit (household) in the highest 20% (3.1) as there are in the lowest (1.6). And there are more than four times as many workers on average in the highest 20% (2.1) as there are in the lowest 20% (0.50).
By adjusting for different household size, we find the highest 20% earned only 6.9 times as much after-tax income per person as the lowest 20%. But income is likely to be higher in households with two or more workers than it is in households with no workers or only one. So, that last row measures average after-tax income per worker in the highest and lowest quintiles (and those in between). By further adjusting for the different number of earners, the highest 20% earned only 3.2 times per worker ($74,701) as much as the lowest 20%, after taxes ($23,616).
Properly understood, the facts about U.S. after-tax income distribution and growth are insufficiently alarming to justify the political misuse of questionable pretax, pre-transfer income statistics as a false argument for redistributing after-tax income.
MP: Extending Alan’s analysis to include average annual expenditures by household quintiles shows even smaller ratios on a per person and per earner basis comparing the top to bottom quintiles. For example, average annual expenditures per person in the top quintile ($38,154) was only 2.35 times greater than the average consumption per person in the bottom quintile ($16,258 — more than twice the average after-tax income per person for that group of $7,380 because of generous government transfer payments, and food, housing, and medical assistance, etc.), and the average annual expenditures per earner in the top quintile ($56,322) was only 1.08 times greater than the average earner in the bottom 20% ($52,024 or more than twice the $23,616 average after-tax income per earner for that group because of generous government transfer payments, etc.).
The bottom chart above shows how the income inequality ratios between the top and bottom quintiles decline from 17.5 to 13.3 times after adjusting for taxes, and from 6.9 to 3.2 times after adjusting after-tax income for the average number of persons and average earners per household. Further, the consumption inequality ratio between the top and bottom quintiles decreases from 2.3 times for the average spending person to only 1.1 times for the average spending per earner.
As Alan Reynolds concludes, the facts about America’s after-tax income and consumption inequalities between the richest and poorest US household quintiles are “insufficiently alarming to justify the political misuse of questionable pre-tax, pre-transfer income statistics as a false argument for redistributing after-tax income.” And my contribution to this analysis is to show that when we consider differences in consumption (“consumption inequality”) — which might be the most relevant and important comparison because it reflects the actual standard of living of Americans — there is a relatively small difference between the richest 20% of Americans and the poorest 20%. Amazingly, the 17.5X ratio between the average before-tax income of top quintile households and bottom quintile households falls to a ratio of only 2.3X when we consider the difference between those quintiles for average consumption expenditures per person and only 1.08 times for average consumption expenditures per earner.
In 2013, President Obama called income inequality “the defining challenge of our time” and most of today’s presidential candidates apparently share Obama’s concern and have pledged to address that challenge by various tax schemes on “the rich.” But if we instead focus on what’s most important: differences between high-income and low-income households in after-tax income per person and per earner, and differences in consumption per person or per earner, the “defining challenge of our time” seems realistically to be much more of an “imaginary hobgoblin” (to quote H.L. Mencken) than a real problem or challenge that needs to be corrected
Mark Perry, "Inequality between high and low income households decreases sharply after adjusting for taxes, household size, earners per household, and consumption," American Enterprise Institute, July 29, 2019, https://www.aei.org/carpe-diem/inequality-decreases-sharply-after-adjusting-for-taxes-household-size-earners-per-household-and-consumption/
Inequality between high and low income households decreases sharply after adjusting for taxes, household size, earners per household, and consumption








Ed Comment:BTW. This is why welfare fucks up the poor. Working part-time, you can consume more per person ($16.3k/yr), than a median worker working fulltime ($15.7k/yr=20.5/1.3). And the median worker is likely smarter and would earn and consume less if they weren’t. So where is the incentive to work if you can get welfare?