Compliance and internal audit are both risk-management functions within an organization, but they differ in purpose, timing, and independence.
Compliance is a management function embedded within day-to-day operations. Its job is to proactively ensure the organization follows applicable laws, regulations, industry standards, and internal policies. Compliance teams design policies and procedures, provide training, monitor activities in real time, interpret new regulations, and often act as the first line of defense against legal or regulatory violations. Because compliance is part of management, it typically reports to a Chief Compliance Officer, General Counsel, or CEO, and it "owns" the risk of non-adherence to rules.
Internal audit is an independent, objective assurance function that evaluates the effectiveness of an organization's overall risk management, governance, and internal control processes — including how well compliance itself is working. Internal auditors periodically review past activities, test controls, and issue findings and recommendations, but they don't design or run the controls themselves. To preserve objectivity, internal audit usually reports functionally to the board (often through an audit committee) rather than to operational management, and administratively to a CEO or similar executive. It's often described as the "third line" in the widely used Three Lines Model, with compliance functioning as part of the "second line" (risk oversight) and operational management as the "first line."
Key distinctions:
- Focus: Compliance ensures rules are followed going forward; internal audit assesses whether controls (including compliance controls) worked in the past and are adequate.
- Independence: Compliance is part of management; internal audit is independent of the areas it reviews.
- Scope: Compliance is narrower, focused on regulatory/legal adherence; internal audit has a broader mandate covering financial, operational, and strategic risks.
- Output: Compliance produces policies, training, and monitoring reports; internal audit produces audit reports with findings and recommendations to the board.
In practice, the two functions collaborate closely, and internal audit often audits the compliance function itself to verify it's operating effectively.