The article is devoted to the study of the conceptual foundations, theoretical and methodological aspects, as well as current directions for improving the procedure for conducting verifications of the reliability and completeness of information on income, expenses, property, compliance with prohibitions and restrictions, and the fulfillment of duties established in order to combat corruption. The authors substantiate the relevance and significance of the research topic. A brief description of the prevalence of corruption at the international level is given, the need for a greater emphasis of public authorities on correction in accordance with the realities of state anti-corruption policy with its simultaneous transformation into evidence-based - evidence is specified. As one of the significant components of the state anti-corruption policy, an anti-corruption check is considered as a procedural measure and, at the same time, a mechanism for control and supervision activities in the field of combating corruption in the public sector of the state. The thesis about the inconsistency of the conceptual justification (deconceptualization) of the anti-corruption check is argued, which, according to the authors, is a consequence of the incompleteness of its institutionalization. Directions are proposed for the formation, development and strengthening of institutional frameworks, as well as, in general, improving the procedure for conducting verifications of the reliability and completeness of information on income, expenses, property, compliance with prohibitions and restrictions, the performance of duties of civil servants established in order to combat corruption in the bodies power.