Purpose The purpose of this paper is to understand the family dynamics factors and gender roles influencing the functioning of copreneurial business practices, to propose a conceptual framework based on these factors/roles. Design/methodology/approach For this purpose, a qualitative approach was adopted, through the analysis of seven businesses created by copreneurial couples in an emerging economy – Brazil. Data were obtained from an open interview with each member of the selected couples who are in charge of firm management. Findings The empirical evidence obtained shows that the most important factors for successful copreneurial family businesses are professionalization, dividing the couple’s tasks and business management. Trust, communication, flexibility and common goals are other essential relational-based factors for the good functioning of this type of family business and stability in the personal relationship. Practical implications It is clear that professionalization and the separation of positions and functions are fundamental for a balance between business management and the couple’s marital life. When couples are in harmony and considering factors such as trust, communication and flexibility (relational-based factors), the firm’s life-cycle and business success become real and more effective. Originality/value From the family dynamics factors and gender roles, this study focused on one of the most important and integrated family firm relationships, copreneurial couples. As there is little research on the heterogeneity of family firms runs specifically by copreneurial couples, this study is particularly important and innovative in the context of a developing economy, such as Brazil. Based on empirical evidence, this study was proposed an integrative and holistic framework that shows the functioning of copreneurial businesses practices.