自愿性内部控制审计的经济后果:基于审计延迟的经验研究

The Economic Consequences of Voluntary Internal Control Audit:Empirical Study Based on Audit Delay

本文基于A股公司2005～2008年期间内部控制审计报告的有关数据,探讨自愿性内部控制审计如何影响审计延迟。研究发现,如果公司披露了无保留内部控制审计意见,CPA的审计效率就更高,审计延迟就更短,也即实施内部控制审计是有回报的。但首次进行内部控制审计不会使审计延迟比前一年度更长,可能的原因是,首次实施内部控制审计需要更多的审计工作,而公司实施内部控制审计本身可能就意味着更高质量的内部控制。我们的经验证据能够直接帮助管制者评估内部控制审计的利弊,在一定程度上可为内部控制审计制度设计提供政策参考。

Using manually collected data on internal control audit report of A-share companies from 2005 to 2008, this paper examines how the voluntary audit of internal control influence audit delay. Based on the empirical evidences, unqualified audit opinion of internal control is associated with higher audit efficiency and shorter audit delay, i. e. , the implementation of internal control audit is rewardable. However, the first implementation of inter- nal control audit is not associated with longer audit delay. This may be attributed to the cause that the first imple- mentation of internal control audit needs more audit work, but the first implementation of internal control audit itself means higher quality of internal control. Our empirical evidence help regulators to evaluate the pros and cons of in- ternal control audit, thus providing policy support to establish internal control audit system in the future.