Public Company Accounting Oversight Board

Audits the auditors — inspections of public-company audit firms.
Regulated entities: Public-company auditors.

Datasets

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API

REST + MCP

Source

PCAOB

All PCAOB datasets we surface

PCAOB audit firm inspections (Big 4 + 1,779 firms · deficiency rates)

Every PCAOB inspection report on every registered audit firm — 4,292 inspections covering 1,779 firms globally. Each report includes the firm's Part I.A deficiency rate (the audit-quality score), how many audits were reviewed, how many had …

4,292 inspections · 1,779 distinct firms · 2018-present

Public Company Accounting Oversight Board

All PCAOB datasets we surface

Other sources