非審計服務究竟是否會影響會計師獨立性，長久以來即為各界關注焦點。本研究第一部分將驗證非審計服務對會計師獨立性的影響。此外，有別於美國要求全面揭露審計、非審計公費資訊，我國規定公開發行公司若符合一定門檻應揭露支付給會計師的各項公費資訊，本研究第二部份將探討我國採門檻制的公費揭露政策下，刻意隱藏公費資訊的公司，其會計師的獨立性是否會不同於無需揭露公司。最後一部份則為市場反應測試，探討市場是否能對公費資訊進行判斷，判斷公司刻意隱藏的情形並給予負面的評價。
實證果發現非審計服務的提供對會計師獨立性產生負面影響，而在我國採門檻制公費揭露政策下，刻意隱藏公費資訊公司進行盈餘管理的可能性越大，若我國之公費揭露政策若能改為全面性揭露將對會計師獨立產生正面影響。此外，市場反應部份結果顯示投資人並未考慮公費資訊的內涵。

關鍵詞：非審計服務、門檻制公費揭露、會計師獨立性、裁量性應計

Whether or not the purchase of non audit services (NAS) impairs audit independence is the focus of a growing body of accounting research in the U.S. Using the data of Taiwanese list firms, this paper examines whether the association holds in environment other than that of the United States. In addition, compared to that in the U.S., Taiwanese Securities and Futures Bureau requires firm to disclose information on the audit and nonaudit fees under some circumstances. The second objective of this paper, therefore, is to explore whether some firms meeting the disclosure threshold have an incentive to avoid the disclosure requirement by concealing audit fee from external investors and regulators, and whether there is difference in the independence between firms which should have met the disclosure threshold otherwise and firms disclosing nonaudit fees. Finally, I investigate whether premium given by market participants varies among these two groups.
We find that the purchase of NAS impairs audit independence, consistent with prior studies. We also document that firms which should have met the disclosure threshold otherwise are more likely to conduct earnings management relative to other firms, as predicted. Finally, our empirical results show that market participants are not able to distinguish these two groups.

Key words: non-audit services, disclosure threshold, audit independence, discretionary accruals

王書鶴，2003，非審計公費對審計品質之影響－從盈餘管理的角度來探討，私立中國文化大學會計研究所之碩士論文。
李珮珮，2001，審計公費決定因素之再探討，私立東吳大學會計研究所碩士論文。
李建然，許書偉，陳政芳，2003，非審計服務對審計獨立性之影響：從非審計服務與異常應計數之關係探討，國立台北大學會計學系碩士論文。
林修葳與謝碧珠，2005，強制會計師輪調、更換會計師與公費資訊揭露問題探討，會計研究月刊，第236期：49-53。
施妙樺，2004，審計公費、非審計公費與財務報表裁量性應計數之關聯，國立政治大學會計學系碩士論文。
胡靜妮，2002，非審計服務與會計師獨立性關係之實證研究，國立台北大學會計學系碩士論文。
許淑琇，2004，審計公費、非審計公費與財務報表品質之關聯性研究，國立政治大學會計學系碩士論文。
黃雨頎，2004，審計公費與非審計公費之決定因素及其交互影響，國立台北大學會計學系碩士論文。
黃馨儀，1997，會計師提供非審計服務之研究，國立台灣大學會計學研究所碩士論文。
陳秀姿，2004，非審計服務對會計師獨立性之影響－從盈餘管理的角度探討，國立台北大學會計研究所論文。
蔡慧玲，1998，企業對會計師事務所非審計服務需求研究，台灣大學會計研究所碩士論文。
賴春田，2000，會計師的業務、責任及會計師事務所組織的演變，國立臺灣大學會計研究所之碩士論文。
Antle, R., P. A. Griffen, D. J. Teece, and O. E. Williamson. 1997. An economic analysis of auditor independence from a multi-client, multi-service public accounting firm. Report prepared for the AICPA by The Law & Economics Consulting Group, inc.
Antle, R., G. Elizabeth, N. Ganapathi, and L. Zhou. 2002. The joint determination of audit fees, non-audit fees, and abnormal accruals. Working paper, Yale University.
Arruñada, B. 1999. The economics of audit quality: private incentives and the regulation of audit and non-audit services. Norwell, Massachusetts: Kluwer Academic Publishers.
Ashbaugh, H., R. LaFond, and B. W. Mayhew. 2003. Do nonaudit services compromise auditor independence? further evidence. The Accounting Review 78: 611-639.
Beck, B., T. Frecka, and I. Somomon. 1988a. A model of the market for MAS knowledge spillovers and auditor-auditee bonding. Journal of Accounting Literature 7: 50-64.
Beck, B., T. Frecka, and I. Somomon. 1988b. An empirical analysis of the relationship between MAS involvement and auditor tenure: Implications for auditor independence. Journal of Accounting Literature 7: 65-84.
Becker, C. L., M. L. Defond, J. Jiambalvo, and K. R. Subramanyam. 1998. The effect of audit quality on earnings management, Contemporary Accounting Research (Spring): 1-24.
Beeler, J. D., and J. E. Hunton. 2001. Contingent economic rents: Precursors to predecisional distortion of client information. Working paper, University of South Carolina.
Brown, L. D. 2001. A temporal analysis of earnings surprise: Profits versus losses. Journal of Accounting Research 39: 221-241.
Chung, H., and S. Kallapur. 2003. Client importance, nonaudit services, and abnormal accruals. The Accounting Review 78: 931-956.
David, F. L., Scott, A. Richardson. 2004. Fees paid to audit firms, accrual choices and corporate governance. Journal of Accounting Research 42: 625-653.
DeAngelo, L. 1981. Auditor independence, low-balling, and disclosure regulation. Journal of Accounting and Economics 3: 113-127.
DeAngelo, L. E. 1986. Accounting numbers as market valuation substitute: A study of management buyouts of public stockholders. The Accounting Review 61: 400-420.
Dechow, P., R. Sloan, and A. Sweeney. 1995. Detecting earning management. The Accounting Review 70: 193-225.
Defond, M. L., and J. Jiambalvo. 1991. Incidence and circumstances of accounting errors. The Accounting Review 66: 643-655.
Defond, M. L., and J. Jiambalvo. 1993. Factors related to auditor-client disagreements over income-increasing accounting methods. Contemporary Accounting Research 9: 411-431.
Defond, M. L., and J. Jiambalvo. 1994. Debt covenant violation and manipulation of accruals. Journal of Accounting and Economics 17: 14-176.
Firth, M. 1997. The provision of nonaudit services by accounting firms to their audit clients. Contemporary Accounting Research 14 : 1-21.
Firth, M. 2002. Auditor-provided consultancy services and their associations with audit fees and audit opinions. Journal of Business Finance & Accounting 29: 661-694.
Francis, J. R., E. L. Maydew, and H. C. Sparks. 1999. The role of big 6 auditors in the credible reporting of accruals. Auditing: The Journal of Practice &Theory 18: 17-34.
Frankel, R., J. Marilyn, and K. Nelson. 2002. The relations between auditors’ fee for nonaudit services and earnings management. The Accounting Review 77: 71-105.
Magee, R., and M. Tseng. 1990. Audit pricing and independence. The Accounting Review 65: 315-336.
Palmrose, Z. 1986. Audit fees and auditor size: Further evidence. Journalof Accounting Research 24: 97-110.
Scheiner, J. H., and J. E. Kiger. 1982. An empirical investigation of auditor involvement in non-audit services. Journal of Accounting Research 20: 482-497.
Simunic, D. 1980. The pricing of audit services: Theory and evidence. Journal of Accounting Research 18: 161-182.
Simunic, D. 1984. Auditing, consulting, and auditor independence. Journal of Accounting Research 22: 679-702.
Teoh, S. H., W. Ivo, and T. J. Wong. 1984. Earnings management and the long-run market performance of initial public offerings. The Journal of Finance 53: 1935-1975.