Aim. The article aims to formulate the problem of formation of such type of investment institutions as investment platform in BRICS.Tasks. The objectives of the article are defined by the fact that the executive director of the Russian Direct Investment Fund proposed to create a joint investment platform of BRICS countries, allowing BRICS members to invest more actively in the economies of their partners. And as is known, BRICS countries currently play a significant and constantly growing role in world politics and international relations. Methods. In the process of research the set tasks were solved by the author usin g general scientific (historical, dialectical, systemic, logical, method of analysis) and legal (comparative legal, sociological, axiological) research methods.Results. The result of the research is the proposal based on the Russian experience of regulation of platform services (financial platforms, investment platforms and information systems) on the formation on the basis of the Russian regulation model of the concept of building the corresponding institution within BRICS. At the same time, the article also draws attention to possible problems that may arise during the preparation of the relevant international act. In particular, the implementation of this initiative raises a wide range of technical, economic and legal issues that require detailed consideration.Conclusions. When choosing specific investment methods that can be used on such a platform, it is necessary to take into account the needs of businesses and the population, both in the long-term and short-term attraction and placement of resources. In particular, legal regulation of the choice of the legal regime for investment should influence the choice of the legal status of entities that will be admitted to such a platform, highlighting, for example, qualified investors or retail investors.