The Supreme Court of the United States has heard numerous cases in the area of tax law. This is an incomplete list of those cases.
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.
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-to-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 The decision was superseded in 1913 by the Sixteenth Amendment to the United States Constitution, which allows Congress to levy income taxes without apportioning them among the states.
The federal government of the United States is the national government of the United States, a federal republic located primarily in North America, composed of 50 states, a city within a federal district, five major self-governing territories and several island possessions. The federal government, sometimes simply referred to as Washington, is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the president and the federal courts, respectively. The powers and duties of these branches are further defined by acts of Congress, including the creation of executive departments and courts inferior to the Supreme Court.
United States v. Butler, 297 U.S. 1 (1936), is a U.S. Supreme Court case that held that the U.S. Congress has not only the power to lay taxes to the level necessary to carry out its other powers enumerated in Article I of the U.S. Constitution, but also a broad authority to tax and spend for the "general welfare" of the United States. The decision itself concerned whether the processing taxes instituted by the 1933 Agricultural Adjustment Act were constitutional.
Speiser v. Randall, 357 U.S. 513 (1958), was a U.S. Supreme Court case addressing the State of California's refusal to grant to ACLU lawyer Lawrence Speiser, a veteran of World War II, a tax exemption because that person refused to sign a loyalty oath as required by a California law enacted in 1954. The court reversed a lower court ruling that the loyalty oath provision did not violate the appellants' First Amendment rights.
The federal judiciary of the United States is one of the three branches of the federal government of the United States organized under the United States Constitution and laws of the federal government. The U.S. federal judiciary consists primarily of the U.S. Supreme Court, the U.S. Courts of Appeals, and the U.S. District Courts. It also includes a variety of other lesser federal tribunals.
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.
Canton Railroad Company v. Rogan, 340 U.S. 511 (1951), is a case in which the United States Supreme Court held that a state franchise tax upon the services performed by a railroad in handling imported and exported goods did not violate the Import-Export Clause of the United States Constitution.
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.
Polar Tankers, Inc. v. City of Valdez, 557 U.S. 1 (2009), was a decision by the Supreme Court of the United States involving the tonnage clause of the United States Constitution.
Article I, § 10, clause 2 of the United States Constitution, known as the Import-Export Clause, prevents the states, without the consent of Congress, from imposing tariffs on imports and exports above what is necessary for their inspection laws and secures for the federal government the revenues from all tariffs on imports and exports. Several nineteenth century Supreme Court cases applied this clause to duties and imposts on interstate imports and exports. In 1869, the United States Supreme Court ruled that the Import-Export Clause only applied to imports and exports with foreign nations and did not apply to imports and exports with other states, although this interpretation has been questioned by modern legal scholars.
South Dakota v. Wayfair, Inc., 585 U.S. ___ (2018), was a United States Supreme Court case that held by a 5–4 majority that states may charge tax on purchases made from out-of-state sellers even if the seller does not have a physical presence in the taxing state. The decision overturned Quill Corp. v. North Dakota (1992), which had held that the Dormant Commerce Clause barred states from compelling retailers to collect sales or use taxes in connection with mail order or Internet sales made to their residents unless those retailers have a physical presence in the taxing state.