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This article and the accompanying chart is specifically about _income_, not capital gains.

• lorenzhs 9y ago
  Income includes capital gains, not only wages. "Income is the sum of all the wages, salaries, profits, interests payments, rents, and other forms of earnings received... in a given period of time." Case, K. & Fair, R. (2007). Principles of Economics, p. 54.
  • elsewhen 9y ago
    none of those things in the list you supplied are capital gains. when i buy a stock at $100/share and i sell it later at $110/share, that gain is not a wage, salary, profit, interest, rent or any other form of earning - it is called a "capital gain".
    • maxerickson 9y ago
      Capital gains are considered income. In some jurisdictions they receive special tax treatment, but they are income nonetheless. For example, for the US, they are included in the "Adjusted Gross Income" calculated on a 1040 tax form, but the amount of tax on the income due to capital gains is calculated differently than the tax on wages. If you look at section 3 of the paper (which goes over their methodology), they explicitly talk about capital income: http://gabriel-zucman.eu/files/PSZ2017.pdf http://gabriel-zucman.eu/files/PSZ2017.pdf