Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm

This study investigates the impact of an accounting firm’s providing both an annual report audit and environmental, social and governance (ESG) report assurance on its audit quality. We find that when the same accounting firm is responsible for both the annual report audit and ESG report assurance,...

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Main Authors: Wenwen Li, Ting Li, Hongjun Zhu
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:China Journal of Accounting Research
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1755309125000309
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author Wenwen Li
Ting Li
Hongjun Zhu
author_facet Wenwen Li
Ting Li
Hongjun Zhu
author_sort Wenwen Li
collection DOAJ
description This study investigates the impact of an accounting firm’s providing both an annual report audit and environmental, social and governance (ESG) report assurance on its audit quality. We find that when the same accounting firm is responsible for both the annual report audit and ESG report assurance, this does not compromise the accounting firm’s independence. On the contrary, it enhances audit quality through knowledge spillover effects and increased investment in reputational capital. Additional evidence suggests that providing ESG report assurance also prompts the accounting firm to allocate more audit resources, thereby influencing audit quality. In cross-sectional results, consistent with expectations, we find that the knowledge spillover and reputational effects of ESG report assurance are more pronounced for companies with weaker internal controls, non-A + H share companies and companies receiving lower levels of analyst attention. Finally, we document that having the same accounting firm responsible for ESG report assurance and annual report audit increases audit fees and also contributes to enhanced firm value. This study comprehensively highlights the influence of ESG report assurance on audit quality, and its findings offer valuable insights into the economic consequences of ESG report assurance practices.
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spelling doaj-art-94fd1248c8c34093a0bf7b6d3b46eaec2025-08-20T03:40:41ZengElsevierChina Journal of Accounting Research1755-30912025-09-0118310043410.1016/j.cjar.2025.100434Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firmWenwen Li0Ting Li1Hongjun Zhu2School of Accounting, Shanghai University of Finance and Economics, ChinaInstitute of Accounting and Finance, Shanghai University of Finance and Economics, China; Corresponding author.School of Accounting, Anhui University of Finance and Economics, ChinaThis study investigates the impact of an accounting firm’s providing both an annual report audit and environmental, social and governance (ESG) report assurance on its audit quality. We find that when the same accounting firm is responsible for both the annual report audit and ESG report assurance, this does not compromise the accounting firm’s independence. On the contrary, it enhances audit quality through knowledge spillover effects and increased investment in reputational capital. Additional evidence suggests that providing ESG report assurance also prompts the accounting firm to allocate more audit resources, thereby influencing audit quality. In cross-sectional results, consistent with expectations, we find that the knowledge spillover and reputational effects of ESG report assurance are more pronounced for companies with weaker internal controls, non-A + H share companies and companies receiving lower levels of analyst attention. Finally, we document that having the same accounting firm responsible for ESG report assurance and annual report audit increases audit fees and also contributes to enhanced firm value. This study comprehensively highlights the influence of ESG report assurance on audit quality, and its findings offer valuable insights into the economic consequences of ESG report assurance practices.http://www.sciencedirect.com/science/article/pii/S1755309125000309ESGIndependent assuranceAudit qualityKnowledge spilloverReputation investment
spellingShingle Wenwen Li
Ting Li
Hongjun Zhu
Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
China Journal of Accounting Research
ESG
Independent assurance
Audit quality
Knowledge spillover
Reputation investment
title Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
title_full Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
title_fullStr Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
title_full_unstemmed Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
title_short Annual report audit, ESG report assurance and audit quality: Evidence from the same accounting firm
title_sort annual report audit esg report assurance and audit quality evidence from the same accounting firm
topic ESG
Independent assurance
Audit quality
Knowledge spillover
Reputation investment
url http://www.sciencedirect.com/science/article/pii/S1755309125000309
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