This study aims to explain the role of relational capability and informational capability in mediating the effect of social media adoption on business performance. The population of this study is the owners of the fashion sector SMEs in Bali. The sample size used was 114 businesses with a purposive sampling approach. The analytical technique used is Path Analysis using the SEM-PLS approach. The results show that the adoption of social media has a positive and significant effect on business performance. Social media adoption has a positive and significant effect on relational capability and social media adoption also has a positive and significant effect on informational capability. Furthermore, relational capability has a positive and significant effect on business performance and informational capability has a positive and significant effect on business performance. Relational capability and informational capability can significantly mediate the effect of social media adoption on business performance. Therefore, it is important for SME owners in the fashion sector in Bali to intensify the adoption of social media to build relational and informational capabilities in order to increase business performance.