This study investigates how institutional origin affects the dot tax haven (DTH) internationalization of Chinese family firms (FFs). Drawing on institutional theory and the mixed gamble perspective, we propose that restructured FFs (RFFs), originating from state-owned enterprises (SOEs), are more likely to engage in DTH internationalization than entrepreneurial FFs directly established by family founders. This propensity is attributed to the institutional legacies inherited from their SOE predecessors, which create a distinct potential gain-loss calculus. Our empirical analysis of publicly listed Chinese FFs from 2012 to 2021 demonstrates that restructured FFs are 30% more likely to use DTH and establish 43% more DTH subsidiaries than entrepreneurial FFs. This tendency, however, is mitigated by the firms’ economic ties to financial institutions. Our study enhances understanding of FFs’ global entrepreneurial decision-making, contributing to FF heterogeneity research. A novel aspect of our study is examining the impact of institutional legacies on FFs – a topic less explored in family business literature. Furthermore, our findings provide insights for policymakers and regulators, emphasizing the importance of tailored policies that consider the intricate interplay between institutional origin and contemporary entrepreneurial goals in FFs.