Composition of payroll tax receipts from 1940 to 2025.
Current schedule of taxation of social security benefits by filing status and income, and changes effective in tax years 1984 and 1994.
Federal tax collections by tax type and state from 1998 to 2018.
IRA distribution, pension and annuity income, and Social Security benefits, by AGI.
Health Insurance revenue and tax rates as a percentage of the Old-Age, Survivors, Disability Insurance (OASDI) tax/contributions from 1966 to 2018.