The aim of the article is to evaluate the national legal instruments (determinants) affecting the establishment and operation of agricultural cooperatives. This problem is wide, therefore, deliberations focus primarily on French and Italian legislation. It presents a brief evolution of regulations on agricultural cooperatives in these countries, with special focus on Rural Code (French Rural Code) and the Italian Civil Code. Emphasis is put on a broad definition of agricultural cooperatives occurring in France and legal simplification concerning the activities of these entities in Italy. Further discussion focuses on the Polish legislation. Particular attention has been given to the development of cooperative agricultural producer groups wh...