Understanding what internal audit is meant to achieve is one thing. Knowing how an actual engagement unfolds from start to finish is another. The internal audit process is the structured sequence auditors follow to move from identifying which areas of an organization need review, to delivering findings that management can actually act on. Knowing this workflow matters whether you are being audited for the first time or building an internal audit function from scratch, since it sets clear expectations for what happens at each stage and why.
What Is the Internal Audit Process?
The internal audit process is the structured series of steps internal auditors follow to plan, execute, and report on an audit engagement. It exists to make sure that audit work is consistent, defensible, and genuinely useful to the organization, rather than an unstructured review that produces findings without clear evidence or a documented trail behind them.
The process generally follows four broad phases: planning, where the engagement’s objectives and scope are defined; fieldwork, where evidence is gathered and controls are tested; reporting, where findings and recommendations are communicated to management; and follow-up, where corrective actions are tracked through to completion. Each phase builds on the one before it, and skipping or rushing any single phase weakens the reliability of everything that follows.
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Internal Audit Process Steps
Most internal audit engagements move through the following sequence, though the specific pace and depth at each step vary depending on the size and complexity of the area under review.
1. Risk Assessment
Every internal audit engagement starts before the engagement itself, with the risk assessment that determines which area gets selected for audit in the first place. This draws on the organization’s broader risk-based audit plan, prioritizing areas where risk exposure, whether financial, operational, compliance-related, or reputational, is judged to be highest. An audit selected without a clear risk rationale behind it is far more likely to end up reviewing the wrong things.
2. Audit Planning
Once an area is selected, planning defines what the engagement is actually trying to determine. This includes setting clear objectives, defining the scope, which processes, locations, or time periods the audit will cover, and developing the audit program, the specific procedures the audit team intends to perform. Planning also typically involves notifying the area being audited and requesting the initial documentation needed to begin the review.
3. Preliminary Review
Before fieldwork begins, auditors usually conduct a preliminary review of relevant policies, procedures, and prior audit reports covering the same area. This step builds the auditor’s understanding of how a process is supposed to work, based on documentation and initial discussions with key staff, before testing whether it actually works that way in practice.
4. Fieldwork and Testing
Fieldwork is where the bulk of the internal audit process actually happens. Auditors interview staff involved in the process, walk through transactions step by step to confirm how the process genuinely flows, observe activities directly, review supporting documentation, and test a sample of transactions against the controls that are supposed to be in place. Data analysis increasingly supplements manual sampling, allowing auditors to examine larger transaction populations for unusual patterns or exceptions that a smaller sample might miss.
5. Audit Findings
As fieldwork uncovers gaps between how a process should work and how it actually works, those gaps are documented as findings, structured around a consistent framework: the condition observed, the criteria the process should have met, the cause of the gap, the effect or risk it creates, and a recommendation for closing it. This structure keeps findings anchored to genuine risk, rather than becoming a loosely organized list of observations.
6. Internal Audit Reporting
Findings are consolidated into a formal internal audit report, typically including a risk rating for each finding, the supporting evidence behind it, and a clear recommendation. The report is generally delivered to management and, depending on the organization’s governance structure, to the audit committee or board, giving both an evidence-based view of how the audited area is actually performing.
7. Management Response
Before a report is finalized, draft findings are typically discussed directly with management, giving them the opportunity to provide additional context, agree with the finding, or explain circumstances the auditor may not have had visibility into. This discussion generally results in an agreed action plan, setting out what management commits to doing and by when, which becomes part of the final report.
8. Follow-Up and Corrective Actions
The internal audit process does not end when the report is issued. Follow-up confirms whether the corrective actions management agreed to were actually implemented, tracking each finding’s status until it is closed. Reporting on outstanding findings to the audit committee or board is what keeps management accountable for completing agreed actions, rather than allowing findings to be acknowledged in a report and then quietly left unresolved.
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How Long Does the Internal Audit Process Take?
The length of an internal audit engagement depends heavily on the size and complexity of the area under review, the availability of documentation and staff for interviews, and how much fieldwork testing the scope requires. A focused review of a single process might take a few weeks from planning through reporting, while a broad, organization-wide engagement can extend over several months. Follow-up activity, tracking whether corrective actions were completed, typically continues well beyond the reporting date itself.
Common Mistakes in the Internal Audit Process
A few recurring mistakes weaken the internal audit process at different stages. Skipping or rushing the risk assessment step leads to audits that review the wrong areas, missing genuine risk exposure elsewhere in the organization. Poorly defined scope during planning creates confusion for both the audit team and the area being reviewed about what is actually being tested. Insufficient evidence gathered during fieldwork undermines the credibility of findings if they are later questioned, and skipping the follow-up step entirely, treating the report as the finish line rather than the midpoint, is one of the most common reasons organizations see the same audit findings recur year after year.
Frequently Asked Questions (FAQs)
What is the internal audit process?
What are the main steps in the internal audit process?
What happens during internal audit fieldwork?
What is included in an internal audit report?
Why is follow-up important in the internal audit process?
How is the internal audit process different from an audit checklist?
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Contact the team at Farahat & Co. for professional support and expert insights for businesses operating in the UAE.
How Farahat & Co. Can Help
This is one part of a complete internal audit framework. For a full overview of internal audit objectives, types, standards, and best practices, see our complete internal audit guide.
Farahat & Co. helps UAE businesses plan and execute risk-based internal audit engagements, from initial risk assessment through fieldwork, reporting, and follow-up.
Contact Farahat & Co. today to discuss your internal audit requirements.
