Internal Auditor (IA)

An internal auditor is a professional employed by an organization to independently evaluate the effectiveness of its internal controls, risk management processes, and governance practices. Internal auditors work from inside the organization but maintain independence from the operations they review. Their findings go to the audit committee of the board of directors, not to the executives managing day-to-day business.

The role spans financial verification, operational efficiency, regulatory compliance, IT security, and fraud prevention. It is broader than any single specialty.

The Certified Internal Auditor (CIA) Is the Global Standard Credential

The Institute of Internal Auditors (IIA) awards the Certified Internal Auditor (CIA) designation, the only globally recognized certification in the internal audit field. Over 200,000 professionals hold the CIA across more than 170 countries, making it the clearest signal of professional competency in the field.

To earn the CIA, you need a four-year university degree and two years of verified internal audit experience, or a master's degree with one year of experience. Candidates without a degree can qualify through five years of relevant work experience. You must pass all three parts of the CIA exam and submit a character reference signed by a current CIA or your supervisor.

The CIA Exam Tests Three Domains Across Three Parts

The exam is structured as a three-part assessment, with each part covering a distinct knowledge area.

• Part 1 – Internal Audit Basics: 125 multiple-choice questions covering governance, risk management, internal control frameworks, and the IIA's International Professional Practices Framework.
• Part 2 – Internal Audit Practice: 100 questions covering audit planning, fieldwork, evidence gathering, communication of results, and quality assurance.
• Part 3 – Internal Audit Knowledge Elements: 100 questions covering organizational governance, risk management, financial management, information technology, and business concepts that internal auditors must understand.

A passing score on each part requires 600 out of 750 points. Global pass rates run between 44% and 56% per part, making meaningful preparation essential.

CIA Holders Earn Significantly More Than Non-Certified Peers

Surgent CPA Review research shows that CIAs earn approximately $98,000 to $100,000 annually compared to roughly $66,000 for non-certified internal auditors. The certification correlates with a potential salary premium of 48% to 51%.

The IIA's own surveys find that 70% of chief audit executives prefer hiring CIAs over non-certified candidates. For senior positions like audit manager, director of internal audit, and chief audit executive, the CIA designation is frequently required.

What a Working Internal Auditor Does Each Day

Day-to-day work depends on the audit plan, which is approved annually by the audit committee. A working internal auditor evaluates whether controls over a business process are designed properly and actually operating as intended. They interview employees, review documents, test samples of transactions, and write findings reports.

Internal auditors also play an advisory role. When management launches a new system or process, they can consult an internal auditor to help design adequate controls before the system goes live, catching problems at the design stage rather than the review stage.

Sources

• Institute of Internal Auditors – CIA Certification – https://www.theiia.org/en/certifications/cia/
• Surgent Exam Prep – https://www.surgent.com/exam-review/cia-review/blog/guide-to-becoming-a-certified-internal-auditor/
• Accounting.com – https://www.accounting.com/certifications/certified-internal-auditor/
• Gleim Exam Prep – https://www.gleim.com/cia-review/cia-exam-requirements/
• Western CPE – https://www.westerncpe.com/blog-post/certified-internal-auditor-and-cia-exam/