Long term trends in non‐audit fees and audit quality: New evidence based on going concern opinions and financial restatements

Pallab Kumar Biswas, Paul A. Griffin and David H. Lont

Accounting and Finance, 2025, vol. 65, issue 2, 1532-1584

Abstract: We revisit the question of whether high levels of non‐audit fees degrade audit quality. We use a structural model to specify the key variables and a grouping approach to reduce measurement error and tighten identification of the non‐audit fee threat to audit quality. We use going concern opinions (GCOs) and financial restatements to proxy for audit quality. We find that higher non‐audit fees reduce the percentage of GCOs issued around the passage of the Sarbanes–Oxley Act of 2002 (SOX), and that restatements are higher around SOX also. The trends in the GCO and restatement percentages after SOX are consistent with an improvement in audit quality.

Date: 2025
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https://doi.org/10.1111/acfi.13376

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