The article analyzes a fundamental trend in the development of Humanities, related to convergence and integration of knowledge and formation of the transdisciplinary methodology of academic research. The author discusses the integral meta-theory of K. Wilber, systemic and dialectic approach by K. Marx, and the renewed ontological image of the economic reality in contemporary institutionalism. The article introduces the notion of economical and legal reality from the position of integral (transdisciplinary) approach.