About: Commissioner v. Glenshaw Glass Co.

Commissioner v. Glenshaw Glass Co., 348 U.S. 426 (1955), was an important income tax case before the United States Supreme Court. The Court held as follows: * Congress, in enacting income taxation statutes that comprehend "gains or profits and income derived from any source whatever," intended to tax all gain except that which was specifically exempted. * Income is not limited to "the gain derived from capital, from labor, or from both combined." * Although the Court used this characterization in Eisner v. Macomber, it "was not meant to provide a touchstone to all future gross income questions." * Instead, income is realized whenever there are "instances of [1] undeniable accessions to wealth, [2] clearly realized, and [3] over which the taxpayers have complete dominion." * Under this