集團企業責任分攤式查核報告與債務資金成本

The Relationship between Shared Audit Opinion of Group Enterprise and the Cost of Debt

李建然(Jan-Zang Lee) ； 陳信吉(Hsin-Chi Chen)

《證券市場發展季刊》 32卷4期 (2020/12) Pp. 1-30

https://doi.org/10.6529/RSFM.202012_32(4).0001

摘要

我國審計準則委員會於2015年7月1日實施審計準則公報第五十四號「集團財務報表查核之特別考量」，該公報對集團查核會計師出具責任分攤式查核報告做出更嚴格的限制，其背後所隱含的邏輯為集團財務報表委由同一家會計師事務所查核，其審計品質較同時委由不同會計師事務所查核（集團主辦會計師因而出具責任分攤式查核報告）更佳。然而，在台灣的環境下，此觀點是否成立，學理上仍有不同的看法。集團主辦會計師查核全部組成個體或積極介入組成個體查核，雖有助於瞭解並掌握所有組成個體之資訊，而能提升其專業能力而提供較好的查核品質；但另一方面集團主辦會計師對集團企業的經濟依賴程度加重，可能不利於獨立性的維持。因此，本研究主要目的係從債權人的觀點，探討債務資金成本與責任分攤式查核意見之間的關聯性，藉以檢視債權人在責任分攤式查核意見對審計品質影響的認知。研究結果顯示，被出具責任分攤式查核意見的集團企業，其債務資金成本顯著高於未被出具責任分攤式查核意見的集團。從債權人的觀點，此一實證結果支持審計準則制訂者之想法，嚴格限制責任分攤式查核意見有助於審計品質之提升。

關鍵字

集團企業 ； 審計品質 ； 責任分攤式查核意見 ； 債務資金成本

並列摘要

Taiwan SAS No. 54 ＂Special Considerations-Audits of Group Financial Statements＂ was implemented on July 1, 2015. This standard severely restricts the principle auditor to issue shared audit report to the group financial reports. This implies a group enterprise's financial report with shared audit opinions has poor audit quality than those with unqualified audit report. However, whether this argument is correct or not needs more empirical evidences to verify. Therefore, this study takes the debt capital cost as the proxy of audit quality, and explores the relationship between the debt capital cost and the shared audit report, so as to examine whether the shared audit report symbolizes inferior audit quality or not. The results show that the cost of debt is significantly higher while the corporation receives the shared audit report. This empirical result supports the argument of auditing standard-setters that strictly restricting shared audit report contributes to the audit quality.

並列關鍵字

group enterprise ； audit quality ； shared audit opinions ； cost of debt

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