In January 2022, the bill about the household (household economy) appeared in Ukraine. This document marked the trend of the fact that the Ukrainian legislation still lacks the legal definition of such a way of conducting small business as a household. The potential introduction of this definition can significantly change the paradigm of the approach to the study of small and medium businesses and treat it as a form of family business, due to the specific motives of its economic activity. Analysis in the context of the Aristotelian-Thomistic principle of subsidiarity revealed that small businesses as family businesses through their entrepreneurial activity provide themselves and their family members with adequate financial resources, and therefore do not potentially create additional financial pressure for different budgets levels.