会计师事务所新增上市公司审计业务提高了审计质量吗

Can Audit Firms' Incremental Clients Improve Audit Quality

基于会计师事务所规模扩大的动态过程,以2002-2008年没有发生会计师事务所变更的公司年度为样本,区分了两类新增上市公司审计业务（IPO业务、通过上市公司变更事务所获取的业务）,研究了会计师事务所新增上市公司审计业务对审计质量的影响。研究结果显示,会计师事务所的IPO业务量与审计收费显著正相关,而通过上市公司变更事务所获取的业务降低了非标意见数和审计收费,且两类新增业务对审计质量的影响存在显著差异。该结果说明,会计师事务所的IPO业务提高了审计质量,而通过上市公司变更事务所获取的业务降低了审计质量。

Audit firm can increase their audit quality by enlarging their size or doing industry specific investment.The authors choose the firm-years from 2002 to 2008,excluding the sample with audit firm changing and separate two types of incremental clients,IPO clients and other incremental clients by audit firm changing.This paper finds the number of audit firm＇s IPO clients is positively related to audit fees,while the number of audit firms＇ incremental clients by audit firm changing is negatively related to the likelihood of issuing modified audit opinions and audit fees.Moreover,their influences are significantly different.This paper draws such conclusions that IPO clients can improve audit quality,while other incremental clients by audit firm changing reduce audit quality.