In the articles the author presents the methodology for the formation of the regulatory ecosystem of the digital economy. The proposed model includes such institutional blocks as: strategies; mechanisms for the implementation of the concepts and innovations as well as their regulation; financial market regulation; cyberspace protection. The projection of the proposed model on the practices of the European Union, as a region with the most developed institutional environment, made it possible to highlight the features of the European matrix for regulating the development of the digital economy. Similarly, the matrix of the regulatory ecosystem of the digital economy within the Eurasian Economic Union was determined. The constructed matrices served as the basis for the comparative analysis of the regulatory ecosystem for the formation of the digital economy within the European and Eurasian Unions.