SYNOPSIS

We investigate the impact of the Public Company Accounting Oversight Board (PCAOB) Auditing Standard No. 5 (AS5) on audit fees and audit quality. AS5 supersedes Auditing Standard No. 2 (AS2), and became effective for audits for accelerated filers for fiscal years ending on or after November 15, 2007. Using a large sample of accelerated filers subject to AS5, we find evidence that audit fees decrease upon the adoption of AS5. More importantly, even though AS5 adoption reduces audit fees for our test sample, we find no evidence of a decrease in audit quality. In summary, we document evidence that AS5 improves the efficiency of internal control audits.

JEL Classifications: M41.

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