![]() U.S.One other thing to note is that Congress recently changed the indexing method used to adjust the tax brackets for inflation. Source: SOI Tax Stats – Historical Table 24 (1909-2010) Ģ011-2020: Internal Revenue Service, Instructions for Form 1120. It was allowed as a deduction for computing income tax. It was a deduction for income tax purposes.Īn additional tax on “excess profits” and/or “war profits” was in effect from 1917 to 1922. Taxable income over $31,964.30, not over $38,565.84:Īn additional surtax ranging from 7 percent to 27 percent was imposed on undistributed profits.Īn additional “declared value” excess profits tax, based on profits in excess of a percentage of the value of corporate stock, was in effect from 1933 through 1945. The rates for 1940 include extra “defense tax” rates that are integrated with the regular rates in later years. It was taken into account, as either a deduction or a credit, for the income tax and the other excess profits tax. ![]() These rates are the sum of the “normal tax” rates and the “surtax” rates, which actually applied to slightly different definitions of taxable income.įrom June 1940 to the end of 1945, a tax on profits in excess of average prewar earnings was also imposed. It was not offset against income tax, but the sum of income and excess profits taxes was capped at a given percentage of income (from 62 percent to 70 percent).īeginning with Tax Year 1942, gains on the sale of assets held for more than 6 months (long-term capital gains) could be treated separately from other taxable income and taxed at a maximum rate of 25 percent. The tax was 30 percent of an adjusted profits figure reduced by credits for the level of prewar profits. The maximum capital gain tax rate was also increased to 26 percent.Īn excess profits tax was also in effect from July 1950 through Calendar Year 1953. These rates reflect a tax increase (for the Korean War), effective March 31, 1951. Rates include the Vietnam War surcharge of 10 percent.įrom April 1, 1954, through Calendar Year 1969, the maximum tax rate on capital gains was 25 percent. For Tax Years 1969 through 1976, the tax was 10 percent of tax preferences in excess of $30,000 after 1976, the tax was 15 percent of preferences in excess of the greater of $10,000 or regular income tax. The maximum tax rate on long-term capital gains was increased to 28 percent.įrom 1969 through 1986, corporations were also subject to an “add-on minimum tax” on certain “tax preference” items (such as percentage depletion, accelerated depreciation) above a certain amount. Includes a 2.5 percent Vietnam War surcharge. The maximum tax rate on long-term capital gains was increased to 30 percent. The holding period for long-term capital gain treatment of assets was increased from 6 months to 9 months in 1977 and 12 months in 1978. The maximum tax rate on long-term capital gains was 28 percent.īeginning in 1983, incorporated professional practices (“personal service corporations”) have been taxed on all taxable income at the corporate tax rate applicable to the highest income bracket. The maximum capital gain rate was raised to 35 percent when the highest corporate rate bracket was increased in 1993. The maximum tax rate on capital gains was capped at 34 percent for 1987, which was to be the rate on the highest corporate tax bracket in 1988 and after, according to TRA86. ![]() In 1998, “small” corporations (generally, those with average gross receipts of less than $5 million) were exempted from the AMT. AMT in excess of regular tax could be carried over as a credit against regular tax in future years. The $40,000 exemption was reduced by 25 percent of the excess of AMTI over $150,000. The tax was 20 percent of the excess of this “alternative minimum taxable income” (AMTI) over $40,000. It required a calculation of an alternative measure of taxable income that reduced or eliminated many tax preference items. The Tax Reform Act of 1986 (TRA86) established a new rate structure effective for Tax Year 1988 and made the rates for Transition Year 1987 an average of the pre-TRA rates for 1986 and the post-TRA rates for 1988.Ī new “alternative minimum tax” (AMT) replaced the add-on minimum tax, effective in 1987. Million are subject to an additional tax of The Revenue Reconciliation Act of 1993 increased the maximum corporate tax rate to 35% for corporations withĬorporations with taxable income over $15 115-97) replaced the graduated corporate tax structure with a flat 21% corporate tax rate. ![]() Many companies are not subject to the CIT because they are taxed as pass-through businesses, with income reportable under the individual income tax.įor tax years beginning after 2017, the Tax Cuts and Jobs Act (P.L. Historical Federal Corporate Income Tax A corporate income tax (CIT) is levied by federal and state governments on business profits.
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