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  2. Taxation in the United States - Wikipedia

    en.wikipedia.org/wiki/Taxation_in_the_United_States

    U.S. federal government tax receipts as a percentage of GDP from 1945 to 2015. 2010 to 2015 data are estimated. The federal income tax enacted in 1913 included corporate and individual income taxes. It defined income using language from prior laws, incorporated in the Sixteenth Amendment, as "all income from whatever source derived". The tax ...

  3. Tax - Wikipedia

    en.wikipedia.org/wiki/Tax

    If individuals experience diminishing returns from income, then the optimum distribution of income for society involves a progressive income tax. Mirrlees optimal income tax is a detailed theoretical model of the optimum progressive income tax along these lines. Over the last years the validity of the theory of optimal taxation was discussed by ...

  4. Income tax in the United States - Wikipedia

    en.wikipedia.org/wiki/Income_tax_in_the_United...

    Under that table for 2016, the income tax in the above example would be $3,980.00. [35] In addition to income tax, a wage earner would also have to pay Federal Insurance Contributions Act tax (FICA) (and an equal amount of FICA tax must be paid by the employer): $40,000 (adjusted gross income) $40,000 × 6.2% [36] = $2,480 (Social Security portion)

  5. Income tax - Wikipedia

    en.wikipedia.org/wiki/Income_tax

    An income tax is a tax imposed on individuals or entities (taxpayers) in respect of the income or profits earned by them (commonly called taxable income). Income tax generally is computed as the product of a tax rate times the taxable income. Taxation rates may vary by type or characteristics of the taxpayer and the type of income.

  6. History of taxation in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_taxation_in_the...

    Congress enacted an income tax in October 1913 as part of the Revenue Act of 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, equivalent of $16,717,815 in 2018 dollars [24]). The average rate for the ...

  7. List of taxes - Wikipedia

    en.wikipedia.org/wiki/List_of_taxes

    Single tax is a tax system that has only one tax levied. Steering tax is a tax that aims to change the behavior of the public. Tax break is a policy where certain groups are exempt from taxes or can be lower taxes. Tax Farming is where a government grants persons the right to collect taxes and turn them over to the government.

  8. Tax policy - Wikipedia

    en.wikipedia.org/wiki/Tax_policy

    The basic principle of horizontal equity is based on the concept of distributive justice, in which taxpayers should pay the same level of income tax in proportion to their respective income groups. Most important, but more costly is to define income groups, knowing that each individual consumes and saves in different ways, making it very hard ...

  9. Proportional tax - Wikipedia

    en.wikipedia.org/wiki/Proportional_tax

    the pharaohs established a tax system that exemplified proportional taxation. Individuals contributed a percentage of their income to the government. These taxes were collected in the form of crops and livestock, which served as essential resources for feeding the army and funding public infrastructure projects1.