A compliance audit is an independent review that checks whether an organization follows a specific set of rules. Those rules can come from a law, a regulator, an industry standard, a contract or the organization’s own policies. The result tells management, customers or regulators whether the requirements are met, and where they are not.
This guide explains who needs compliance audits, what they cover, how the process works and how to prepare.
Who needs compliance audits?
Almost every regulated or contract-driven business faces them. Common examples include:
| Organization | Typical compliance audit |
|---|---|
| Banks and NBFCs | RBI inspections and IT/cyber security audits |
| Listed companies and market intermediaries | SEBI cyber security and resilience requirements |
| Payment companies and merchants | PCI DSS assessments |
| SaaS and IT service providers | ISO 27001 certification audits, SOC 2 reports |
| Hospitals and health tech | Health data and privacy requirements |
| Any company processing personal data | Privacy audits under the DPDP Act or GDPR |
| Government suppliers | Contractual security audits, such as CERT-In empanelled audits |
Compliance audit vs other audits
A financial audit gives an opinion on financial statements. An operational audit looks at efficiency and effectiveness. By contrast, a compliance audit asks a narrower question: do we meet these specific requirements? The criteria are fixed in advance, so the result is usually “compliant”, “non-compliant” or a list of non-conformities.
What a compliance audit covers
The exact scope depends on the rules, but it usually includes:
- Policies and procedures: are they written, approved and aligned with the requirements?
- Implementation: do people and systems actually follow them?
- IT systems: are technical controls, such as access, encryption and logging, in place?
- Records: is there evidence, such as logs, approvals and training records?
- Reporting: are mandatory reports and notifications made on time?
The compliance audit process
- Define scope and criteria. Agree on which requirements, locations, systems and period the audit covers.
- Plan. Prepare an audit plan, a request list for documents and an interview schedule.
- Review documents. Read policies, procedures and previous audit reports.
- Gather evidence. Interview staff, observe processes, inspect systems and test samples, such as a set of user access approvals.
- Evaluate. Compare evidence with each requirement and record gaps.
- Report. Present findings with their severity, the evidence and recommendations. For certification audits, the auditor also decides on certification.
- Follow up. Track corrective actions and verify that they work.
How to prepare
- Know the requirements. Map each requirement to an owner and evidence.
- Run a readiness check first. A gap assessment is cheaper than failing an audit.
- Organise evidence. Keep it in one place, with clear names and dates.
- Brief staff. People should answer honestly and know where documents live.
- Fix quick wins. For example, remove leavers’ access and update outdated policies.
For the difference between a readiness review and a formal audit, read audit vs assessment.
Common findings
- Policies exist but are out of date or not approved.
- Evidence is missing, even when the control works in practice.
- Access reviews happen late, or not at all.
- Incident or breach reporting procedures do not match legal deadlines.
FAQ
How often do we need a compliance audit?
It depends on the rules. ISO 27001 certification needs yearly surveillance audits and a recertification audit every three years. PCI DSS assessments are annual. Regulators set their own cycles.
Who can perform a compliance audit?
Internal auditors can perform internal compliance audits. For certification or regulatory purposes, however, you usually need an accredited or approved external auditor.
Related guides
Sources
Preparing for an ISO 27001 or IT audit? Our ISO 27001 readiness assessment finds your gaps before the auditor does. You can also start with our free ISO 27001:2022 readiness checklist, or contact us for a quote.
