整合审计与审计费用:基于规模协同与知识溢出的双重视角

Integrated Audit and Audit Fee:Based on both Scale Synergy and Knowledge Spillover

不同于美国、加拿大等国家,我国特有的(非)整合审计模式的自由选择制度,为本文研究不同模式下审计费用的横向比较提供了基础。利用2011-2015年间A股上市公司数据研究发现,整合审计较非整合审计能够显著降低审计费用,这主要源于整合审计下规模协同效应带来的审计交易效率的提升。进一步分析表明,与"非十大"相比,"十大"实施整合审计的规模协同效应更加显著;随着客户规模的增大,整合审计的规模协同效应也更加显著,但审计师对超大型客户实施整合审计的能力仍显不足。此外,没有发现不同审计模式下审计质量存在显著差异的证据。上述结论对政策制订者完善审计制度以及审计师和上市公司决策,都具有重要的指导意义。

Different from America and Canada,the optional audit models—integrated or non-integrated—of China provide basis for this paper to study the lateral comparison of audit fee under different audit models.Using China’s A share main board data from 2003 to 2015,we find that,audit fee is significantly lower under integrated audit model than that under non-integrated model,which is due to the promotion of transaction efficiency brought by scale synergy effects under the integrated audit model.Furthermore,we find that the above effect of integrated model is significantly greater for big10 than nonbig10,and becomes more significant with scale increasing of the client,but auditors’ability to implement integrated audit for super large-scale clients is still inadequate.Additionally,we find no difference of audit quality between integrated audit model and non-integrated model.The above results have guidance significance for policy maker to perfect audit system and for auditors and public companies to make decision.