Is non-audit services a suitable proxy for auditor independence in the post-SOX period?

Before implementation of the Sarbanes Oxley Act (SOX) in 2002, researchers frequently used fees from non-audit services (NAS) as a surrogate for auditor independence. NAS is still used in this way, even though SOX has restricted the types of NAS that auditors may provide to their clients. Therefore, we pose the following question: What does the literature say about the continuing adequacy of NAS as a surrogate for auditor independence in the post-SOX era? This question is relevant to research in accounting regulation because, if NAS is no longer an adequate surrogate, then research on auditor independence may provide biased results. Overall, we find that many post-SOX studies using NAS have insignificant or counterintuitive results, whereas pre-SOX studies using NAS predominantly have significant results suggesting that NAS impairs auditor independence. Is this shift in findings because NAS is no longer an adequate proxy for independence? We discuss this issue and provide our conclusions, citing relevant research where applicable.     

Auditor Reputation Under Different Negligence Regimes

Do auditor reputation effects evolve the same way under precise negligence as under vague negligence? Or are there differences? We assume that investors update their beliefs on unobservable auditor quality when an auditor discloses an inaccurate report. We call this a reputation effect. A necessary condition for reputation effects to occur is that, ex ante, investors expect ‘good’ auditors to take more care than ‘bad’ auditors such that ‘good’ auditors are less likely to issue an inaccurate report. Consistent with empirical evidence, we assume that wealthier (‘good’) auditors tend to take more care than less wealthy (‘bad’) auditors. We find that under vague negligence, reputation effects will occur, inducing both types of auditor to increase the level of care taken. A ‘good’ auditor is likely to exert excessive care. Then, even in the absence of auditor risk aversion, a (properly defined) liability cap is necessary to induce efficient incentives. A contractual liability cap is preferable to a legally fixed liability cap. Under precise negligence, a ‘good’ auditor will exert the standard of due care. However, a ‘bad’ auditor will also do so if sufficiently wealthy. Consequently, ex ante, investors do not expect different levels of care to be taken or reputation effects to occur. A liability cap is not desirable. This paper highlights the importance of non‐legal sanctions in auditor liability. Finally, it links the ‘reputation’ and ‘deep pocket’ hypotheses, both of which have attempted separately in the past to explain the positive correlation between auditor size and auditor quality.     

Perceived auditor independence and audit firm fees

Regulations requiring the disclosure of fees paid to an auditor for audit and non-audit services (NAS) respond to concerns that such payments are potentially detrimental to auditors' actual or perceived independence. Although empirical studies have failed to produce unequivocal evidence of detrimental effects on auditor independence, the actions of regulators, audit firms and companies are consistent with the belief that economic bonding generated by fees can impair perceived levels of auditor independence.

Using a sample of UK companies over a six year period to March 2006, we study perceived impairment of auditor independence by examining the relationship between levels of total relative fees (combined audit and NAS fees payable by a company to its auditor as a proportion of the audit firm's UK income) and market value. This paper's methodological innovation is its use of a valuation framework in this setting. A further contribution lies in dropping the assumption of linearity found in most prior empirical studies. We provide evidence that shareholders perceive a threat to auditor independence only at high total relative fee levels. At lower levels, total relative fees are positively related to company value. These results suggest that disclosure of NAS and audit fees are of relevance to investors, as is information about auditor income. Our results support the view that regulation by reference to the threshold at which total relative fees are perceived negatively is more consistent with investor preferences than prohibition of the supply of NAS by auditors to their audit clients.     

Auditor rotation and the appearance of independence: Evidence from non-professional investors

We examine the impact of audit firm versus partner rotation on non-professional investors’ independence-related perceptions, extending prior research on auditor rotation and independence in fact. Arguments for mandatory audit firm rotation continue to be made by regulators and investor groups based, in part, on the idea that firm rotation will incrementally strengthen independence in appearance relative to audit partner rotation. We report the results of two experiments. The first examines 5-year audit firm versus partner rotation under relatively weak or strong audit committees. We find no statistically significant difference in beliefs about how much of an income reducing audit difference management will record, or in beliefs about auditor independence, between the two auditor rotation conditions. On the other hand, we find that non-professional investors do believe more of the audit difference will be recorded, and the auditors will be more independent, under a strong audit committee than a relatively weak audit committee. The second experiment provides further evidence on audit firm versus partner rotation by examining a setting involving a 26-year audit firm–client relationship. Again, no statistically significant differences between the two auditor rotation conditions were found. These findings suggest that compared to audit partner rotation, audit firm rotation does not strengthen independence in appearance among non-professional investors and that non-professional investors recognize the value of strong audit committees.     

The effect of mandatory auditor assignment and non-audit service on audit fees: Evidence from Korea

In Korea, regulators could assign auditors to firms. We investigate the relationship among audit fees, mandatory auditor assignment, and the joint provision of non-audit and auditor services in Korea. We find that assigned auditors charge significantly higher audit fees than freely selected auditors. We also find that the joint provision of non-audit and audit services does intensify the relation between auditor assignment and audit fees. Combined with the results of other studies that have shown that firms audited by assigned auditors report smaller amounts of discretionary accruals than firms audited by freely selected auditors, our results suggest the possibility that mandatory auditor assignment may improve auditor independence.     

The effect of client management bargaining power, moral reasoning development, and belief in a just world on auditor independence

In two studies, practising auditors' responses to hypothetical audit conflict scenarios were used to test hypotheses that moral reasoning development and belief in a just world influence resistance to client management power. Based on a mixed factorial ANOVA design, results confirmed that auditor independence is interactively determined. Three styles of auditor decision-making emerged: “autonomous”, “accommodating” and “pragmatic”. Autonomous auditors were responsive to personal beliefs, such that those with strong just world beliefs were more likely to resist client management power. Pragmatic auditors were responsive to client management power, irrespective of beliefs. Accommodating auditors responded both to personal beliefs and client management power; they comprised the least resistant group, especially when they believed in an unjust world.     

Client influence and auditor independence revisited: Evidence from auditor resignations

Financial scandals such as the Enron-Andersen debacle provoke concerns that auditors lack independence when faced with influential clients. Unlike previous studies that examine whether client influence affects audit quality on ongoing engagements (providing mixed results), we investigate whether client influence (which engenders “independence risk”) at the audit-office level affects auditor resignations from high engagement-risk clients. We construct summary measures of engagement risk, using client disclosures on Form 8-K filings, potential risk factors (e.g., litigation risk), and auditor action (e.g., issuance of a going concern opinion) on the previous year’s financial statements. Focusing on risky clients, we find that auditors are more likely on average to resign from influential clients, and this positive association holds for auditors that are less likely to have mechanisms in place to mitigate independence risk. Also, importantly, influential clients are prevalent across the spectrum of client size, and the positive association between client influence and auditor resignations holds for both large and small clients.     

Audit report information content and the provision of non-audit services: Evidence from Spanish lending decisions

This study examines whether auditor economic independence affects the information content of going concern audit reports in the European setting. We conduct an experiment where 80 experienced Spanish loan officers from the second largest European commercial bank review a loan request under two lending scenarios: (1) a potential borrower receiving an unqualified but modified going concern opinion, and (2) a potential borrower receiving a qualified going concern opinion. Auditor economic independence, measured by the provision of non-audit services (NAS), is manipulated (absence vs. presence of significant NAS). We find that a qualified going concern audit report is interpreted as a primary warning signal (death penalty). However, the provision of NAS acts as a second order mechanism that only activates loan officers’ professional skepticism in the case of an unqualified but modified going concern report scenario. Therefore, we find evidence suggesting that the potential negative impact of a perceived lack of auditor independence depends on the nature of the audit report. Our findings have important implications for the European regulator, which is currently considering establishing an auditor independence regulation framework similar to that in the United States of America.     

Non-audit services, auditor quality and the value relevance of earnings

This paper tests the hypothesis that there is an inverse relation between non‐audit services (NAS) provided by a firm auditor and the value relevance of earnings (measured as the earnings response coefficient) and that this relation is weaker for firms with Big 6 auditors. The hypothesis is based on anecdotal evidence and previous research that suggests that the provision of NAS by the external auditor is likely to adversely affect investors’ perceptions of the credibility of financial reports, and that Big 6 auditors, because of reputational capital and litigation costs, are likely to mitigate the adverse effects of NAS. Results using 840 firm‐year observations of Australian companies document a statistically significant inverse relationship between NAS and the value relevance of earnings, and this inverse relationship is weaker for Big 6 auditors, therefore supporting the hypothesis.     

Auditor independence, ‘low balling’, and disclosure regulation

This paper investigates the allegations of the Commission on Auditors' Responsibilities and the Securities and Exchange Commission that ‘low balling’ on initial audit engagements impairs auditor independence. We demonstrate that, contrary to these claims, ‘low balling’ does not impair independence; rather it is a competitive response to the expectation of future quasi-rents to incumbent auditors (due, e.g., to technological advantages of incumbency). ‘Low balling’ in the initial period is the process by which auditors compete for these advantages. Critically, initial fee reductions are sunk in future periods and therefore do not impair auditor independence. The implications for current regulation governing changes of auditor (Accounting Series Release No. 165 et al.) and audit fees (Accounting Series Release No. 250) are also discussed.     

Non‐audit Services and Auditor Independence Depending on Client Performance

We posit that the effect of non‐audit fees on auditor independence in Korea is based on audit client performance. Further, we suggest that an audit client with low performance has an incentive to purchase non‐audit services (NAS) from an incumbent auditor to facilitate earnings management and steer accounting practices in a preferred direction. We find evidence that as non‐audit fees in Korea increase, auditor independence is reduced only for low‐performing audit clients. Thus, unconditional prohibition of NAS seems unnecessary. Regulators and policymakers should examine the motivation for purchasing NAS, particularly among audit clients with poor performance.     

Client Importance and Auditor Independence: The Effect of the Asian Financial Crisis

This paper investigates the effect of the Asian financial crisis on the relationship between client economic importance and auditor independence. Using data from 1994 to 2001 in six Asian markets (Hong Kong, Indonesia, Malaysia, Singapore, Taiwan and Thailand), we find that auditors are less likely to compromise their independence for important clients after a crisis. The result is consistent with Coffee's (2001) crash‐then‐law hypothesis and supports the notion that financial crisis triggers public concern over auditors’ independence. Furthermore, we find the effect of financial crisis on auditor independence is more pronounced in weaker investor protection regimes.     

An evaluation of root cause analysis use by internal auditors

The objective of this study is to increase understanding of internal auditor use of root cause analysis (RCA). The IIA’s Practice Advisory 2320–2: Root Cause Analysis (IIA 2011) states that RCA should be a core competency for internal auditors to provide insight and add value within organizations. However, little is known about internal auditor use of RCA in a profession where normative problem-solving theory and RCA frameworks potentially conflict with professional demands for independence and objectivity. We conduct in-depth interviews with 21 high-level internal auditors with RCA experience to understand use within the profession. The results suggest several overarching themes that have implications for policymakers, researchers, and practitioners. First, we find that internal auditors in practice believe that RCA is a very important tool within the profession. Second, although internal auditors generally claim to understand RCA, we find considerable variation in the ways they approach the construct and implement prescribed processes in practice. Finally, the results indicate that while RCA use is reasonably prevalent among internal auditors, knowledge constraints, resource limitations, and concern about independence and objectivity create considerable variation in terms of RCA approach, rigor, and efficacy within organizations.     

Non-audit services provided to audit clients,independence of mind and independence in appearance: latest evidence from large UK listed companies

This paper investigates whether the provision of non-audit services (NAS) to audit clients impairs auditor independence of mind and independence in appearance. The main contributions of this paper are in terms of its timeliness with respect to regulatory changes, the simultaneous examination of both forms of auditor independence and the methodological innovation whereby it uses a variable derived from the level of abnormal audit fees as a moderating variable in order to capture the direct impact of the NAS fee level on auditor independence as well as how its influence is moderated by the level of unexpected audit fees. Our results indicate that auditor independence of mind is compromised by the size of NAS fees, particularly for clients who pay below the level of expected audit fee. The stock market perceives that auditor independence is compromised by NAS fees but, at the same time, additional tests indicate that there are benefits that accrue from NAS and, in particular, the relation between return and non-discretionary net income is increasing in NAS fees. The balance of evidence suggests that the European Union is correct in undertaking some reform of the auditing market.     

The impact of revolving door practice and policy on nonprofessional investors’ perceptions of auditor independence

This study investigates whether an ex-auditor’s employment with an audit client impairs nonprofessional investors’ perceptions of auditor independence, and whether the strength of the US revolving door policy improves their perceptions of auditor independence. Despite nonprofessional investors owning over one-third of the US equity holdings, the literature has not examined how revolving door policy impacts their perceptions of auditor independence. Two between-subjects experiments examine these issues. The first experiment finds that investors perceive the ex-auditor’s integrity to be significant in explaining the firm’s decision to manage earnings, irrespective of the firm’s previous working relationship with the ex-auditor. The results from experiment two indicate that strengthening the revolving door policy above that of the American Institute of Certified Public Accountants’ policy does not improve perceptions of auditor independence. Academics may be interested in triangulating the independence ‘in appearance’ results of this study to the independence ‘in fact’ results of other studies, since the Securities and Exchange Commission asserts that both facets of independence are equally important. The results may also be of interest to academics and practitioners, as prior research suggests that restricting auditors’ moves to management positions with the client impairs firms’ abilities to hire quality auditors.     

Audit report lag: the role of auditor type and increased competition in the audit market

This study investigates the effect of auditor type (private vs. state) and increased competition in an audit market on audit report lag (ARL). This is the first study to provide evidence regarding the effect of audit market competition on ARL. Utilising structure–conduct–performance theory, we predict that competition pressures private auditors to be more efficient and to have less reporting lag than state auditors. We also predict that competition among auditors after a liberalisation period forces auditors to be more efficient and to record less ARL than before. We use a unique data set in Iran, whereby the audit market liberalisation (an audit market where services were previously provided primarily by a state entity) has resulted in both state and private auditors simultaneously providing audit services. The findings are consistent with the following hypothesis, that is ARL is shorter for private auditors than it is for state auditors, and ARL decreases as competition increases in the Iranian audit market. Consistent with the structure–conduct–performance theory, the findings suggest that increased competition in the audit market results in higher efficiency, as reflected by a shorter ARL.     

Does auditor designation by the regulatory authority improve audit quality? Evidence from Korea

In Korea, the regulatory authority designates external auditors for firms that are deemed to have strong incentives and/or great potential for opportunistic earnings management, and mandates these firms to replace their incumbent auditors with new designated auditors and to retain them for a certain period, typically one to three years. We call this regulatory regime ‘auditor designation’. This paper investigates whether the auditor designation rule in Korea is effective in deterring managers from making income-increasing earnings management. Consistent with our hypothesis, we find that the level of discretionary accruals is significantly lower for firms with designated auditors than firms with a free selection of auditors. We also find that firms with mandatory auditor changes (i.e., auditor designation) report significantly lower discretionary accruals compared to firms with voluntary auditor changes. The above findings are robust to a battery of robustness checks. Overall, our results are consistent with the notion that the auditor designation enhances audit quality and thus the credibility of financial reporting.     

Auditor Independence in Canada: A Historical Perspective — From Shareholder Auditors to Modern‐Day Audit Committees*

This paper uses the theoretical framework of Goldman and Barlev (1974) to examine auditor independence in Canada. It traces the historical development of the auditor's role in the 19th century and the beginning of the auditor's relationship with shareholders and management. It shows how, following the separation of management from shareholding, management's ability to influence auditors undermined auditor independence. The paper traces attempts by legislators and regulatory bodies to limit management's influence over auditors and to correct the asymmetry of their relationship. It notes that recent changes to legislation and rules of professional conduct are no longer proactive, but are reactions to corporate scandals in Canada and the United States. The paper argues that although future changes will occur to redress the imbalance, only structural changes are likely to provide a real solution to auditor independence problems. However, it is likely that such changes will be resisted by the accounting profession.     

Does size matter? The influence of large clients on office-level auditor reporting decisions

Large clients create an economic dependence that may cause auditors to compromise their independence and report favorably to retain valuable clients. Economic dependence is measured as a client's size relative to the size of the office that contracts for the audit and issues the audit report. We find no evidence economic dependence causes Big Five auditors to report more favorably for larger clients in their offices. However, larger clients also pose greater litigation risk, and we do find that Big 5 auditors report more conservatively for larger clients, suggesting that reputation protection dominates auditor behavior.     

Review of Post‐CLERP 9 Australian Auditor Independence Research

The Corporate Law Economic Reform Program (Audit Reform & Corporate Disclosure) Act 2004 (CLERP 9) added substantial new provisions pertaining to auditor independence, and followed in the wake of financial reporting scandals during 2000 to 2003. Many of the regulatory changes were framed in the earlier Ramsay Report, which drew on independence concerns raised in the academic literature. This review paper reviews Australian academic research investigating auditor independence, framed by our conceptual understanding of auditor independence, to assess what we have learned about the impact of CLERP 9 on auditor independence. Our review of Australian auditor independence research published post‐CLERP 9 reveals little evidence of the impact of the regulatory changes on auditor behaviour (independence in fact) and perceptions (independence in appearance). We conclude there are substantial needs for further research on the impact of the CLERP 9 amendments on auditor independence and any enduring independence issues. We identify particular areas for future research that may better inform policy development and argue that the prospect of high‐quality relevant research will increase if regulatory agencies, the accounting profession and audit practitioners engage more with academics in the research process. We identify several ways in which this might occur.