Audit market competition, opinion shopping, and audit quality: Evidence from audit firms in Nigeria

Authors

  • Oluwamayowa Olalekan Iredele Department of Accounting, University of Lagos, Nigeria
  • Regina Christina Fidelis Department of Accounting, University of Lagos, Nigeria

DOI:

https://doi.org/10.33003/fujafr-2026.v4i1.274.39-52

Keywords:

Audit market competition, Audit quality, Big four, Opinion shopping

Abstract

Purpose: This study is motivated by the intense competition in the audit market environment which fosters audit opinion shopping practices, eventually raising critical concerns about the credibility of audit. The research examines the extent of audit opinion shopping in Nigeria, the influence of market competition on such behaviour, and the implications for audit quality.

Methodology: A descriptive and correlational research design was adopted, using primary data collected from 200 auditors. Responses were analyzed using the Statistical Package for the Social Sciences (SPSS), employing descriptive statistics, reliability tests, and regression techniques.

Results and conclusion: The descriptive analysis results revealed evidence of audit opinion shopping among Nigerian firms, with market competition exerting a significant influence on the likelihood of such practices.

The findings also revealed that opinion shopping significantly affects audit quality, particularly in relation to timeliness, comparability, and reliability of financial statements. The study concludes that while competition may enhance efficiency in the audit market, it also provides opportunities for opportunistic opinion shopping, which undermines audit quality.

Implication of findings: It recommends stronger regulatory oversight, improved enforcement of auditor independence, and the adoption of governance mechanisms that discourage frequent auditors switching for favourable opinions.

References

Akhabue, A. R., & Abusomwan, R. E. (2025). Does board size, audit firm tenure, and audit firm size affect audit quality of listed companies in Nigeria? FUDMA Journal of Accounting and Finance Research (FUJAFR), 3(4), 239–251. DOI: https://doi.org/10.33003/fujafr-2025.v3i4.260.239-251

Appah, E., Onowu, A., Audu, T., & Tonye, B. (2022). Audit firm attributes and external auditors switching behaviour of insurance companies in Nigeria. African journal of accounting and financial reporting research 5(2), 73-92.DOL.52589/AJAFR-KWBB3FRL DOI: https://doi.org/10.52589/AJAFR-KWBB3FRL

Cassell, C. A., Giroux, G. A., Myers, L. A., & Omer, T. C. (2016). The role of Big 4 audit firms in deterring opinion shopping: Evidence from the post-SOX period. Auditing: A Journal of Practice & Theory, 35(3), 1–24.

Chen, C., Su, X., & Wu, X. (2013). Forced auditor change, continued audit service, and audit opinions: Empirical analysis of China’s audit market. Auditing: A Journal of Practice & Theory, 32(2), 41–70.

Choi, J. H., Kim, J. B., & Zang, Y. (2000). Do abnormally high audit fee impair audit quality. Auditing: a journal of practice and theory, 29(2), 115 - 140 DOI: https://doi.org/10.2308/aud.2010.29.2.115

Chow, C. W., & Rice, S. J. (1982). Qualified audit opinions and auditor switching. The Accounting Review, 57(2), 326–335. DOI: https://doi.org/10.2308/TAR-4481748

DeAngelo, L. E. (1981). Auditor size and audit quality. Journal of Accounting and Economics, 3(3), 183–199. DOI: https://doi.org/10.1016/0165-4101(81)90002-1

DeFond, M. L., & Subramanyam, K. R. (1998). Auditor changes and discretionary accruals. Journal of Accounting and Economics, 25(1), 35–67. DOI: https://doi.org/10.1016/S0165-4101(98)00018-4

DeFond, M. L., & Zhang, J. (2014). A review of archival auditing research. Journal of Accounting and Economics, 58(2–3), 275–326. DOI: https://doi.org/10.1016/j.jacceco.2014.09.002

Enofe, A. O., Magbame, C., & Abadua, H. (2013). Audit firm rotation and audit quality in Nigeria. European Journal of Business and Management, 5(17), 66–75.

Eshleman, J. D., Kim, C., & Neal, T. L. (2014). Do Big 4 auditors improve the value of earnings conservatism? Accounting Horizons, 28(1), 83–112.

Francis, J. R. (2004). What do we know about audit quality? The British Accounting Review, 36(4), 345–368. DOI: https://doi.org/10.1016/j.bar.2004.09.003

Francis, J. R. (2011). A framework for understanding and researching audit quality. Auditing: A Journal of Practice & Theory, 30(2), 125–152. DOI: https://doi.org/10.2308/ajpt-50006

Francis, J. R., & Wang, D. (2008). The joint effect of investor protection and Big 4 audits on earnings quality around the world. Contemporary Accounting Research, 25(1), 157–191. DOI: https://doi.org/10.1506/car.25.1.6

Guan, Y., Su, L., Wu, D., & Yang, Z. (2016). Do school ties between auditors and client executives influence audit outcomes? Journal of Accounting and Economics, 61(2–3), 506–525. DOI: https://doi.org/10.1016/j.jacceco.2015.09.003

Harris, M. (2017). Audit industry concentration and potential implication., the public company accounting oversight board’s 11th annual international institute on audit regulation. Washington

International Auditing and Assurance Standards Board (IAASB). (2014). A framework for audit quality: Key elements that create an environment for audit quality. IFAC.

Jensen, M. C., & Meckling, W. H. (1976). Theory of the firm: Managerial behavior, agency costs and ownership structure. Journal of Financial Economics, 3(4), 305–360. DOI: https://doi.org/10.1016/0304-405X(76)90026-X

Kim, J. B., Song, B. Y., & Zhang, L. (2014). Internal Control Weaknesses and Bank Loan Contracting: Evidence from SOX Section 404 Disclosures. The Accounting Review, 86(4), 1157–1189. DOI: https://doi.org/10.2308/accr-10036

Krishnan, G. V., & Yu, W. (2011). Further evidence on knowledge spillover and the joint effect of auditor tenure and auditor industry expertise on audit quality. Contemporary Accounting Research, 28(1), 265–292.

Krishnan, J., & Stephen, D. (1995). Evidence on Opinion Shopping from Audit Opinion Conservatism. Journal of Accounting and Public Policy. 179-201 DOI: https://doi.org/10.1016/0278-4254(95)00020-F

Lennox, C. (2000). Do companies successfully engage in opinion shopping? Evidence from the UK. Journal of Accounting and Economics, 29(3), 321–337. DOI: https://doi.org/10.1016/S0165-4101(00)00025-2

Newton, N. J., Persellin, J. S., & Wilkins, M. S. (2016). Internal control opinion shopping and audit market competition. The Accounting Review, 91(2), 603–623. DOI: https://doi.org/10.2308/accr-51149

Obisesan, Samuel. (2024). Audit Competition, Audit Pricing, and Audit Quality of Listed Financial Institutions in Nigeria.

Sani, A. I. (2025). Influence of auditors’ skepticism on audit quality: Evidence from audit firms in Nigeria. FUDMA Journal of Accounting and Finance Research (FUJAFR), 3(3), 90–100. DOI: https://doi.org/10.33003/fujafr-2025.v3i3.210.90-100

Smith, D. B. (1986). Auditor “opinion shopping”: An empirical investigation. Auditing: A Journal of Practice & Theory, 5(2), 65–76.

Spence, M. (1973). Job market signaling. Quarterly Journal of Economics, 87(3), 355–374. DOI: https://doi.org/10.2307/1882010

Tahir, M. I., Shaibu Alhassan, A., & Oyedokun, G. E. (2024). Impact of audit market concentration and auditor attributes on audit quality of consumer goods firms in Nigeria. FUDMA Journal of Accounting and Finance Research (FUJAFR), 2(1), 166–177. DOI: https://doi.org/10.33003/fujafr-2024.v2i1.79.166-177

Watts, R. L., & Zimmerman, J. L. (1983). Agency problems, auditing, and the theory of the firm: Some evidence. Journal of Law and Economics, 26(3), 613–633. DOI: https://doi.org/10.1086/467051

Downloads

Published

04-03-2026

How to Cite

Iredele, O. O., & Fidelis , R. C. (2026). Audit market competition, opinion shopping, and audit quality: Evidence from audit firms in Nigeria . FUDMA Journal of Accounting and Finance Research [FUJAFR], 4(1), 39-52. https://doi.org/10.33003/fujafr-2026.v4i1.274.39-52

Similar Articles

41-50 of 85

You may also start an advanced similarity search for this article.

Most read articles by the same author(s)