Barro, Robert J.; Sahasakul, Chaipat - 2021
We extend previous estimates of the average marginal tax rate from the federal individual income tax to include social … on the average marginal tax rate is below .02 until 1966, but than rises to .03 in 1968, .04 in 1973, .05 in 1974,and .06 … in 1979. Thus, since 1965, the overall average marginal tax rate rises more rapidly than that from the income tax alone …