Number of households, average pretax and after-tax income, shares of pretax and after-tax income, and income category minimums for households with children, by comprehensive household income quintile.

Shares of federal tax liabilities for elderly headed households, by comprehensive household income quintile.

Average federal tax rates for nonelderly childless households, by comprehensive household income quintile.

Number of households, average pretax and after-tax income, shares of pretax and after-tax income, for nonelderly childless households, by comprehensive household income quintile.

Number of households, average pretax and after-tax income, shares of pretax and after-tax income, and income category minimums for all households, by comprehensive household income quintile.

Income tax as a percent of adjusted gross income, by size of adjusted gross income and type of return.

Percent of total returns in each tax bracket.

Adjusted gross income, exemptions, deductions, and tax items.

Sources of income and tax items in current and constant dollars from tax years 1913 to 2018.

Historical highest marginal personal income tax rates, 1913 to 2020.

Historical itemized charitable contributions as total amount (constant dollars), percent of AGI, and percent of GDP, 1917-2017.