The legal principle that is subject to scrutiny involves a series of formally separate steps that are, in substance, integrated components of a single transaction. Courts examine such arrangements to determine the tax consequences based on the overall result, rather than the individual steps. For example, if an individual sells property to a related party, then that related party quickly sells the property to an outside entity, the initial sale may be disregarded if the court finds the transactions were interdependent and designed to minimize tax liability. This ensures taxation reflects the actual economic outcome.
This doctrine prevents taxpayers from achieving tax results that are inconsistent with the economic reality of their dealings. Historically, it has served as a significant tool for the Internal Revenue Service (IRS) to combat tax avoidance schemes. Its application promotes fairness and equity within the tax system by ensuring that similar economic activities are taxed similarly, regardless of the formal structure adopted by the taxpayer.