| Aspect | External Audit Contract | Internal Auditor |
|---|
| Credentials | CPA or equivalent, audit certifications | CPA or relevant certifications, internal audit training |
| Work Environment | External firms, client sites, audit periods | Company’s internal departments, ongoing |
| Employer & Industry Usage | Accounting firms, consulting agencies | Corporations, government agencies |
External Audit Contracts involve independent auditors reviewing financial statements periodically, while Internal Auditors continuously assess internal controls within an organization. Both roles require similar certifications but differ in work setting and purpose, with external auditors focusing on compliance and accuracy, and internal auditors improving internal processes.