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The purpose of this study is to examine the association between audit partners’ signing networks and accruals quality, using the sample of Taiwanese publicly traded companies.

This study uses four centrality measures as proxies in this study for the strength of the audit partners’ relationship networks and the absolute value of discretionary accruals to measure accruals quality.

Using the sample of publicly traded firms audited by the Big 4 accounting firms in Taiwan during the 2011–2017 period, this study finds that the centrality of an audit partner’s signing network is negatively associated with the absolute value of discretionary accruals. The result is robust to various discretionary accruals measures and survives the alternative explanation related to the endogenous matching between audit partners and their clients.

This study contributes to the understanding of the effect of the relationship network within an accounting firm on accruals quality. This is one of the few studies to empirically examine the strength of the audit partners’ relationship network as a factor in firms’ financial reporting quality, especially by using the sample from an emerging market. This study shows that the strength of the audit partners’ signing networks contains incremental information when assessing firms’ earnings quality. High-quality audit work is important to ensure high-quality financial reporting and the results of this study highlight that audit partners’ network linkages affect the quality of their work.

This study aims to examine the Taiwan setting, where audit partners’ names are presented in the audit report and where audit committee formation is voluntary in the initial stage of audit committee reform. This paper investigates the effects of the formation of voluntary audit committees on the selection of individual audit partners, and, in turn, the audit quality. This contrasts with previous studies investigating the relationship between audit committees and auditor selection at the audit firm level.

This paper samples all of Taiwan’s publicly listed firms for the period 2007–2012 and uses Heckman’s (1979) two-stage estimation model to achieve our objectives.

Using different characteristics of individual engagement partners as proxies for a higher quality auditor, the main empirical results show that voluntary audit committee formation is positively related to an industry specialist lead partner and a lead partner that has a larger number of clients. In addition, this paper also finds that voluntary audit committee formation has a positive impact on audit quality (proxied by discretionary accruals). The results suggest that the voluntary formation of an audit committee contributes positively to both auditor selection and audit quality. Furthermore, an additional test shows that the main empirical results are robust to a validity threat that firms that have good corporate governance prior to the formation of voluntary audit committees tend to select high-quality audit partners.

The paper contributes to the audit committee literature in the following ways: this paper takes advantage of Taiwan’s unique setting, where forming an audit committee is not compulsory in the initial stage of audit committee reform, to investigate the voluntary audit committee, auditor selection and audit quality; this paper expands on Abbott and Parker’s (2000) study of audit committee characteristics and auditor selection at the audit firm level by examining this relationship at the individual audit partner level; this paper responds to the call by Church et al. (2008) and DeFond and Francis (2005) who propose more studies on audit quality at the individual engagement partner level.