Relational capital constitutes one of the components of the intellectual capital of any organization, which reflects the value provided by the relationships that it establishes with the agents in the environment with which it interacts during the development of its activity.Because organizations maintain a wide range of relationships of different nature, relational capital has a direct impact on efficacy, understood as the degree to which objectives and goals are achieved.However, the review of the most relevant theory that has been generated in the field of knowledge management to date shows that interest has been oriented mainly towards human and structural capital, the other two components of intellectual capital, and there is a lack of methodological tools for the effective management of relational capital.For this reason, this paper aims to reflect on the importance of relational capital and its relationship with efficacy, as well as to propose a comprehensive model for its management, which involves different organizational variables, and to present its validation through a factor analysis in the context of Mexican small and medium-sized enterprises.