The purpose of this research is to obtain empirical evidence about the relationship bet­ween the effects of leverage, dividend policy, and relational capital on corporate performance of the manufacturing companies listed in the Indonesia Stock Exchange over the period of 2016–2018. This is a quantitative study used secondary data of 117 companies listed on the Indonesian Stock Exchange (IDX) cover period of two years (2016–2018). The study made use of ex-post facto research design. Purposive sampling method employed for selecting data of sample to obtain sample of 117 companies and the unit analyze are 39. Data collection method used in this research is documentation. Methods of data analysis used descriptive statistical analysis and regression moderation with the test of absolute difference value. The data was analyzed using multiple regressions. Three formulated research hypotheses were achieved after tested. The findings from this study show that all the independent variables have effects on corporate performance (ROA) simultaneously (F-test). The t-test results showed that leverage (DAR), which is measured by a debt-to-asset ratio and dividend policy (DPR) which is proxies by a dividend payout ratio have significant effect on corporate performance, while relational capital (RCE) in this study was measured by relational capital efficiency has no significant effect on corporate performance (ROA).