Wealth Concentration

The most comprehensive data on American wealth concentration comes from the work of economists Emmanuel Saez and Gabriel Zucman, who used a combination of tax records, national accounts, and survey data to reconstruct the full distribution of household wealth in the United States from 1913 to the present. Their findings describe a U-shaped curve: very high wealth concentration through the 1920s, substantial compression through the mid-century decades, and then a reversal beginning around 1980 that has returned wealth concentration to near-Gilded Age levels.

At the peak of mid-century compression -- roughly 1975-1980 -- the wealthiest 1% of Americans held approximately 22% of total household wealth. By 2019, their share had risen to approximately 42%. The wealthiest 0.1% -- roughly 130,000 families -- held around 20% of total household wealth, more than the entire bottom 80% of the population combined (Saez and Zucman, 2016). These are not small differences in degree -- they represent a structural transformation of the distribution of economic power in American society.

The concentration of wealth matters beyond its effects on consumption and living standards. Wealth generates income through dividends, capital gains, interest, and rental income -- and that income is itself unequally distributed, because wealth is. The wealthiest 1% receive approximately 20% of all income and roughly 60% of all capital gains income in high-income years. As long-term capital gains are taxed at lower rates than ordinary income, and as the step-up in basis at death eliminates capital gains taxes on inherited wealth, the tax system systematically favors the conversion of labor income into capital income -- a conversion available primarily to those who already hold substantial capital.

The 400 wealthiest Americans now own more wealth than the bottom 60 percent of the US population -- about 150 million people. This is not a market outcome. It is a policy outcome.Chuck Collins, The Wealth Hoarders (2021)

The mechanisms of wealth concentration are well-understood at this point. High incomes generate savings that accumulate as financial assets. Financial assets appreciate faster, on average, than wage growth -- particularly during the low-interest-rate era of QE, when asset prices were deliberately inflated by monetary policy. Inherited wealth compounds across generations, particularly since the estate tax has been progressively weakened and its coverage reduced. The carried interest loophole and preferential treatment of capital gains ensure that returns to existing wealth face lower tax rates than returns to labor.

The chart below traces the top 1% wealth share from 1913 through 2022. The visual is striking: the compression of the mid-century and the reversal after 1980 are not gradual drifts but relatively sharp inflections that correspond closely to the policy changes -- union density, marginal tax rates, financial regulation, inheritance policy -- documented in earlier chapters. Inequality at this scale is not a natural condition; it is an institutional outcome, and it is reversible through institutional change.