Development of the modern income tax.
Congress re-adopted the income tax in 1913, levying a 1% tax on net personal incomes above $3,000, with a 6% surtax on incomes above $500,000. By 1918, the top rate of the income tax was increased to 77% (on income over $1,000,000) to finance World War I. The top marginal tax rate was reduced to 58% in 1922, to 25% in 1925, and finally to 24% in 1929. In 1932 the top marginal tax rate was increased to 63% during the Great Depression and steadily increased.
During World War II, Congress introduced payroll withholding and quarterly tax payments. In pursuit of equality (rather than revenue) President Franklin D Roosevelt proposed a 100% tax on all incomes over $25,000. When Congress did not enact that proposal, Roosevelt issued an executive order attempting to achieve a similar result through a salary cap on certain salaries in connection with contracts between the private sector and the federal government. For tax years 1944 through 1951, the highest marginal tax rate for individuals was 91%, increasing to 92% for 1952 and 1953, and reverting to 91% 1954 through 1963.
For the 1964 tax year, the top marginal tax rate for individuals was lowered to 77%, and then to 70% for tax years 1965 through 1981. In 1978 income brackets were adjusted for inflation, so fewer people were taxed at high rates. The top marginal tax rate was lowered to 50% for tax years 1982 through 1986. Reagan undid 40% of his 1981 tax cut, in 1983 he hiked gas and payroll taxes, and in 1984 he raised tax revenue by closing loopholes for businesses. According to historian and domestic policy adviser Bruce Bartlett, Reagan's 12 tax increases over the course of his presidency took back half of the 1981 tax cut.
