The article focuses on the economic policy of the USA in the beginning of 1980s under President Ronald Reagan, discusses economic reforms implemented at this period and describes the key aspects of economic deregulation, including the theory of supply as the basis of the economic philosophy of the time. The author argues that the inhibition of economic growth could be overcome only trough market regulation, activities of private structures and competition with the minimal role of the state. The article discusses the major results and ambiguities of “Reaganomics”