This study aims to prove and analyze empirically how capital affects firm value and interaction that happened between capital and corporate risk management affects firm value. The hypothesis of this study relates to the effect of capital on firm value at banking companies in Indonesia, and the second hypothesis relates to the effect of capital on corporate risk management at banking companies in Indonesia. The results of statistical analysis for testing the fourth hypothesis are obtained that regression coefficient value is -0.079, and t-count value is -1.510 with a significance value is 0.133, which is greater than the error tolerance set at 0.05. It shows that capital does not have significant effect on firm value in banking companies listed on the IDX for the 2016-2020 period. While the results of statistical analysis for testing the ninth hypothesis obtained a regression coefficient value is 0.213 and t-count value is 2,453 with a significance value is 0.016, which is smaller than the error tolerance set at 0.05. It shows that interaction between capital and enterprise risk management has a significant effect on firm value in banking companies listed on the IDX for the 2016-2020 period.