average and marginal employee Social Security and Medicare (FICA) tax rates for two-parent families of four at the same relative positions in the income distribution from 1955 to 2015.
HI revenue and tax rates as a percentage of OASDI from 1966 to 2015.
Capital gains and taxes for all positive gains and long-term gains from 1954 to 2014.
average federal tax rates for all households, by comprehensive household income quintile, 1979 to 2013.
average federal tax rates for households with children, by comprehensive household income quintile, 1979 to 2013.
Marginal tax rates for the 400 individual income tax returns reporting the highest AGI each year.