Abstract: The article is devoted to the activity of supervising agencies that control the sphere of purchases by state companies and corporations from the point of view of their using the risk-oriented approach. The author of the article analyzes the term 'compliance' and clarifies the definition of antimonopoly compliance as a system of measures undertaken by economic entities in order to comply with the regulations regarding purchases as well as leverages used by the state to render timely control measures. Antimonopoly compliance is defined as a two-level system which elements need to be further developed at the micro- and macro-levels. In the course of her research the author has used such methods as analysis and synthesis which allows to summarize the research results as well as the method of abstract modelling that allows to present the mechanism of involving supervisory agencies into the compliance system. The main conclusion of the research is that the author describes a practical opportunity for implementing the risk-oriented approach to carrying out control activities in the sphere of purchases taking into account aforesaid advantages thereof. The scientific novelty of the research is caused by the fact that the author also offers a matrix of risk for practical implementation. As a result of the research, the author describes risk criteria, methods to define risk groups and particularities of the influence of control authorities on relevant groups of state companies and corporations.