The Sixteenth Amendment to the United States Constitution allows Congress to levy an income tax without apportioning it among the states on the basis of population. It was passed by Congress in 1909 in response to the 1895 Supreme Court case of Pollock v. Farmers' Loan & Trust Co. The Sixteenth Amendment was ratified by the requisite number of states on February 3, 1913, and effectively overruled the Supreme Court's ruling in Pollock.
Santa Clara County v. Southern Pacific Railroad Company, 118 U.S. 394 (1886), is a corporate law case of the United States Supreme Court concerning taxation of railroad properties. The case is most notable for a headnote stating that the Equal Protection Clause of the Fourteenth Amendment grants constitutional protections to corporations.
Pollock v. Farmers' Loan & Trust Company, 157 U.S. 429 (1895), affirmed on rehearing, 158 U.S. 601 (1895), was a landmark case of the Supreme Court of the United States. In a 5–4 decision, the Supreme Court struck down the income tax imposed by the Wilson–Gorman Tariff Act for being an unapportioned direct tax. The decision was superseded in 1913 by the Sixteenth Amendment to the United States Constitution, which allows Congress to levy income taxes without apportioning them among the states.
Tax noncompliance is a range of activities that are unfavorable to a government's tax system. This may include tax avoidance, which is tax reduction by legal means, and tax evasion which is the illegal non-payment of tax liabilities. The use of the term "noncompliance" is used differently by different authors. Its most general use describes non-compliant behaviors with respect to different institutional rules resulting in what Edgar L. Feige calls unobserved economies. Non-compliance with fiscal rules of taxation gives rise to unreported income and a tax gap that Feige estimates to be in the neighborhood of $500 billion annually for the United States.
In Canada, taxation is a prerogative shared between the federal government and the various provincial and territorial legislatures.
Eisner v. Macomber, 252 U.S. 189 (1920), was a tax case before the United States Supreme Court that is notable for the following holdings:
In addition to federal income tax collected by the United States, most individual U.S. states collect a state income tax. Some local governments also impose an income tax, often based on state income tax calculations. Forty-one states, the District of Columbia, and many localities in the United States impose an income tax on individuals. Nine states impose no state income tax. Forty-seven states and many localities impose a tax on the income of corporations.
The Revenue Act of 1913, also known as the Underwood Tariff or the Underwood-Simmons Act, re-established a federal income tax in the United States and substantially lowered tariff rates. The act was sponsored by Representative Oscar Underwood, passed by the 63rd United States Congress, and signed into law by President Woodrow Wilson.
Hylton v. United States, 3 U.S. 171 (1796), is an early United States Supreme Court case in which the Court held that a yearly tax on carriages did not violate the Article I, Section 2, Clause 3 and Article I, Section 9, Clause 4 requirements for the apportioning of direct taxes. The Court concluded that the carriage tax was not a direct tax, which would require apportionment among the states. The Court noted that a tax on land was an example of a direct tax that was contemplated by the Constitution.
The United States federal government and most state governments impose an income tax. They are determined by applying a tax rate, which may increase as income increases, to taxable income, which is the total income less allowable deductions. Income is broadly defined. Individuals and corporations are directly taxable, and estates and trusts may be taxable on undistributed income. Partnerships are not taxed, but their partners are taxed on their shares of partnership income. Residents and citizens are taxed on worldwide income, while nonresidents are taxed only on income within the jurisdiction. Several types of credits reduce tax, and some types of credits may exceed tax before credits. Most business expenses are deductible. Individuals may deduct certain personal expenses, including home mortgage interest, state taxes, contributions to charity, and some other items. Some deductions are subject to limits, and an Alternative Minimum Tax (AMT) applies at the federal and some state levels.
Commissioner v. Duberstein, 363 U.S. 278 (1960), was a United States Supreme Court case from 1960 dealing with the exclusion of "the value of property acquired by gift" from the gross income of an income taxpayer.
Flint v. Stone Tracy Co., 220 U.S. 107 (1911), was a United States Supreme Court case in which a taxpayer challenged the validity of a federal income tax on corporations. The privilege of incorporation is a state function, and the challengers argued that only the states should tax corporations. The Court ruled that the privilege of operating in corporate form is valuable and justifies imposition of a federal income tax:
Carter v. Carter Coal Company, 298 U.S. 238 (1936), is a United States Supreme Court decision interpreting the Commerce Clause of the United States Constitution, which permits the United States Congress to "regulate Commerce... among the several States." Specifically, it analyzes the extent of Congress' power, according to the Commerce Clause, looking at whether or not they have the right to regulate manufacturing.
Springer v. United States, 102 U.S. 586 (1881), was a case in which the United States Supreme Court upheld the federal income tax imposed under the Revenue Act of 1864.
Tax protester Sixteenth Amendment arguments are assertions that the imposition of the U.S. federal income tax is illegal because the Sixteenth Amendment to the United States Constitution, which reads "The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration", was never properly ratified, or that the amendment provides no power to tax income. Proper ratification of the Sixteenth Amendment is disputed by tax protesters who argue that the quoted text of the Amendment differed from the text proposed by Congress, or that Ohio was not a State during ratification, despite its admission to the Union on March 1, 1803, more than a century prior. Sixteenth Amendment ratification arguments have been rejected in every court case where they have been raised and have been identified as legally frivolous.
Tax protesters in the United States advance a number of constitutional arguments asserting that the imposition, assessment and collection of the federal income tax violates the United States Constitution. These kinds of arguments, though related to, are distinguished from statutory and administrative arguments, which presuppose the constitutionality of the income tax, as well as from general conspiracy arguments, which are based upon the proposition that the three branches of the federal government are involved together in a deliberate, on-going campaign of deception for the purpose of defrauding individuals or entities of their wealth or profits. Although constitutional challenges to U.S. tax laws are frequently directed towards the validity and effect of the Sixteenth Amendment, assertions that the income tax violates various other provisions of the Constitution have been made as well.
Taxation of income in the United States has been practiced since colonial times. Some southern states imposed their own taxes on income from property, both before and after Independence. The Constitution empowered the federal government to raise taxes at a uniform rate throughout the nation, and required that "direct taxes" be imposed only in proportion to the Census population of each state. Federal income tax was first introduced under the Revenue Act of 1861 to help pay for the Civil War. It was renewed in later years and reformed in 1894 in the form of the Wilson-Gorman tariff.
Stanton v. Baltic Mining Co., 240 U.S. 103 (1916), is a United States Supreme Court case.
United States v. Hatter, 532 U.S. 557 (2001), was a United States Supreme Court case decided in 2001. The case concerned an alleged violation of the Compensation Clause of the United States Constitution when Congress extended Medicare and Social Security taxes to federal judge salaries. Additionally, the case dealt with whether a later increase of federal judge salaries, greater than the new taxes, remedied the potential violation.
Comptroller of the Treasury of Maryland v. Wynne, 575 U.S. 542 (2015), is a 2015 U.S. Supreme Court decision that applied the Dormant Commerce Clause doctrine to Maryland's personal income tax scheme and found that the failure to provide a full credit for income taxes paid to other states was unconstitutional.
