内部控制报告与权益资本成本的关系研究

以2007～2009年沪深两市A股上市公司为研究样本,基于信息披露能够缓解信息不对称进而降低权益资本成本的分析检验了内部控制报告披露与企业权益资本成本的关系。结果发现企业内部控制报告的披露未对权益资本成本产生影响。无论是出于自愿或是基于监管要求披露内部控制报告,也无论是仅出具内控自评报告或是引入独立第三方另出具内控审计报告,企业的内部控制报告披露行为均未对权益资本成本产生影响。研究结果表明企业没有实现内部控制报告的有效披露。

The Disclosure of Internal Control Report and Cost of Equity Capital

Using the listed companies in A share from 2007~2009 as samples, the relationship between the disclosure of internal control report and the cost of equity capital is analyzed. The result shows that there is no significant relationship between the two no matter the disclosure behavior is voluntary of is required, by self estimate or the third part estimate. The conclusions indicate that the disclosure of internal control report is ineffective.