South By North Strategies, Ltd.

The Economix blog published by The New York Times recently asked why Americans’ in the top 10 percent of the income distribution don’t consider themselves to be well-0ff. The answer: the people above them in the income distribution are just “so much richer.”

The line [graph] gets much steeper because at the very top of the income scale, the monetary divisions between percentiles grow much greater. Those in the middle earn a little less than people a few percentiles up from them, whereas those at the top earn a lot less than their counterparts in nearby, higher percentiles. For example, those who aspire to hop from the 30th percentile to the 35th percentile would need in increase their cash income by $4,000 annually (or by about 17 percent); those who aspire to hop from the 91st percentile to the 96th percentile would require an increase of $324,900 (or 171 percent).
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In other words, at least in dollar terms, there is much greater inequality at the very top of the income scale than at the bottom or in the middle. Whether this translates to much greater differences in standards of living at the top is debatable, as an extra $1,000 for a poor family likely makes a much bigger impact on that family’s quality of life than an extra $1,000 for a wealthy family.