Аннотация:BRICS is a unique multilateral organization spanning Europe, Latin America, Asia, and Africa, playing a key role in shaping a multipolar world. The expanded BRICS+ holds transformative potential by creating alternatives to dominant global systems, such as international currency, the World Bank, and ICSID arbitration. This paper proposes a diversified approach to support member states in achieving synergy for shared economic growth. To reach this goal, the authors applied comparative legal analysis, formal legal methods, retrospection, and legal forecasting. A core finding highlights the need to harmonize key areas of legislation across BRICS+ members—especially antitrust, customs, financial regulation, and investment dispute resolution. Establishing favorable conditions for business partnerships is essential. The paper identifies priority sectors for cooperation—energy, security, innovation, trade, digital transformation, and financial markets—as the foundation for joint development of balanced policies. These efforts aim to align business, antitrust, and investment frameworks, fostering deeper integration and collaboration within the BRICS+ alliance.