The relevance of the topic is linked to the fact that socialization remains a global trend in economic development. However, in the context of the VUCA and BANI world, the task is not only to recognize changes and adapt to shifting circumstances, but also to make rational decisions, set new goals, and apply new algorithms. In such conditions, the socio-economic paradigm acts as a conceptual model of economic development. It represents a paradigmatic framework for studying socio-economic processes through the application of methodological approaches from disciplines such as economic sociology, economic theory, economic psychology, institutional economics, behavioral economics, and others. Therefore, the task of clarifying its content becomes relevant. The aim of the article is to identify and characterize the conceptual foundations of the socio-economic paradigm and the methodological approaches to its substantiation. The article outlines the content of the socio-economic paradigm as a conceptual model of economic development. It describes its substantive premises, reveals the cause-and-effect relationships between economic and social processes, defines the methodological approaches for studying and comparing socio-economics with other paradigms of economic development, and highlights the need to study the degree of influence of social sciences on the economy and the economy on social processes. It is proven that the economic version of socio-economics assumes that the social sphere, as well as various social processes, not only affect the economy but are also dependent on it, and this dependence requires economic evaluation. Socio-economics represents a scientific field that studies the patterns of modern economic life in the context of moral imperatives and criteria of social justice. The object of socio-economics is defined as economic activity carried out at different territorial and organizational levels, while its subject is economic relations regulated by moral and ethical requirements, attitudes, and prescriptions.