近年來，由於國內外有著許多企業舞弊或是相關醜聞事件，這使得國內相關的主管機關開始增訂許多相關法規，也因此會計師的業務日益加重，但會計師的公費卻沒有因為這樣的情況而大幅度的增長。然而，要如何在審計市場中脫穎而出，以獲得較多的審計公費溢價，則為會計師事務所執業之重要議題。本研究參考Numan and Willekens (2012)之研究，希冀以會計師事務所市佔率、市佔率排名次於自身事務所市佔率之差距，以及客戶對於事務所的重要性，來探討與審計公費溢價間的關係，並藉此觀察是否能夠因上述之原因而使審計公費溢價上升。本研究以2007 年至2012 年國內上市公司為樣本，其實證結果顯示：首先，當事務所為特定產業市佔率的第一名時，審計公費之溢價確實會有一定幅度的正成長。再者，事務所與市佔率排名次於自身事務所之市佔率差距愈大，其審計公費溢價亦愈高。最後，當客戶對於事務所越重要時，其客戶給予事務所的審計公費溢價也會相對增加。本研究之主要貢獻在於以實證結果說明實行產業專業策略化後可能獲得之經濟效益，以供會計師事務所進行產業專業策略決策之參考，以及有助於提供未來審計公費溢價相關研究探討之方法與方向。 In recent years, a series of accounting frauds were reported in Taiwan and foreign countries. After these accounting scandals involving irregular accounting procedures and their accounting firms, it put the auditor in the public spotlight. Meanwhile, the regulatory authorities focus their attentions on updating and issuing regulations for audit industry. Although the auditor bears a heavy responsibility recently, the audit fee does not growth accordingly. Therefore, increasing audit fee premium becomes an important issue for auditors. Following Numan and Willekens (2012), we examine how CPA firm’s market share, the difference of market share between CPA firm and its closest competitor and the degree of auditor–client alignment related to audit fee premium. By using data from Taiwanese listed companies during 2007 to 2012, our empirical results show that the audit fee premium is positively related to the top market share company, distance of market share relative to closest competitor and auditor–client alignment.This study contributes to the auditor by providing empirical evidence that the auditor benefits by adopting industry specialization strategy and also to the literature by exploring more audit fee premium related factors.
