We use data from internal assessments of audit quality in a Big 4 firm to investigate the impact of audit firm tenure and auditor-provided non-audit services (NAS) on audit quality. We find that first-year audits receive lower assessments of audit quality and that quality improves shortly...

We address the following overarching questions: What kind of accountability framework could regulators use to (a) motivate auditors to improve audit quality, and (b) evaluate how well auditors have carried out their duties? We draw on research in accounting, economics, psychology, and...