The article examines modern legal technologies that allow assessing the effectiveness of legal and regulatory framework — legal monitoring and regulatory impact assessment. The authors note that the activities on the evaluation of the regulatory impact of laws and regulations and their projects are seen as part of legal monitoring, as well as anti-corruption expertise of laws and regulations and their projects. It is noted that during the implementation of the regulatory impact assessment it is necessary to monitor interstate (transnational) acts, which were assessed. In this case, legal monitoring allows evaluating the conformity between the effects of regulation and its goals, set forth at the adoption of the legal instructions, as well as the quality of the regulatory impact assessment procedures performed at the stage of the development and adoption of regulatory legal acts. The authors offer suggestions and recommendations to optimize the mechanism of legal monitoring of transnational acts.