This study empirically investigates the joint effects of relational capital and green supply chain management on financial performance. The hypotheses are empirically tested using structural equation modeling and bootstrap methods based on data collected from 308 manufacturing companies in China. The results show that supplier and customer relational capital improve financial performance indirectly through supplier and customer green management, respectively. Internal relational capital improves financial performance indirectly through internal and supplier green management but has no significant indirect effect through customer green management. The results enrich the literature by providing insights into the synergic effects between relational capital and green supply chain management and by providing empirical evidence of the antecedents and consequences of green supply chain management.