Non‐Audit Services and Knowledge Spillovers: Evidence from New Zealand
利用新西兰数据，研究审计师同时提供非审计服务是否产生知识溢出，发现非审计费用越高、审计延迟越短，且审计质量未下降，表明存在知识溢出，但仅限于提供两种服务的同一城市办公室。
Abstract: New Zealand provides a natural laboratory to test whether knowledge spillovers arise from auditor‐provided non‐audit services. Unlike prior research, we do not assume constant audit quality but first test whether audit quality varies with auditor‐provided non‐audit services and audit efficiency. Results show that higher non‐audit fees paid to the auditor in conjunction with shorter audit lag does not reduce the quality of the audit. Results reveal a negative association between non‐audit fees and audit lag, thus suggesting the presence of knowledge spillovers. However, the knowledge spillover effect is limited to the city office providing both the audit and non‐audit services.