Independent internal audit that finds the gaps before your external auditor does.

We deliver Clause 9.2 internal audits the way an external auditor reads them. Every finding, every observation, every nonconformity surfaced before the certification body arrives, not after.

Internal audit is mandatory under every ISO management system standard and effectively required under most regulatory frameworks. We deliver it as a senior, audit-grade engagement applying the same depth of clause coverage, evidence testing, and finding clarity the certification body brings to Stage 2, six months earlier and entirely confidential between AuditVantage® and the engaging organisation.

Clause 9.2ISO and regulator-aligned
Lead Auditor delivered

Audit scopes covered

ISO clause-required27001 / 42001 / 27701 / TISAX
Regulator-alignedSOC 2 / NIS 2 / AI Act
70+
Audits delivered
9.2
Clause mandatory
100%
Confidential

Illustrative example. Not live client data.

What thorough actually means

Every ISO management system standard requires an internal audit before the certification body can certify or recertify you. Most consultants and many companies deliver this audit as a paper exercise. We do not. A thorough internal audit reads exactly the way the external auditor will read your management system, six months before the external auditor arrives.

What we specifically do that a paper-exercise audit does not:

Full clause-by-clause walkthrough, not selective sampling against a pre-tick checklist.

Evidence tested against each clause and control, not what looks plausible on a dashboard.

Control narrative reviewed for defensibility under scrutiny, including how each control links back to a real risk and a real treatment decision.

Scope decisions, exclusions, and Statement of Applicability challenged, the same way the external auditor will challenge them.

Nonconformities along with corrective action guidance that closes the finding cleanly under audit conditions.

Audit report structured to match ISO standard expectation, so the management review process and the next external/certification audit run from the same document.

Two scopes of thorough internal audit

Internal audit is mandatory or effectively mandatory across every framework we cover. We deliver it under two scopes, mapped to how each framework treats internal audit obligations.

Scope 1. ISO clause-required internal audits. ISO/IEC 27001:2022, ISO/IEC 42001:2023, ISO/IEC 27701, and TISAX all require internal audit under Clause 9.2 of the Harmonized Structure. These are unambiguous Clause 9.2 engagements with audit programme, audit plan, evidence gathering, finding documentation, nonconformity reports, audit report, and follow-up of corrective actions. Mandatory before any certification or recertification audit.
Scope 2. Regulator-aligned and trust-criteria-aligned assessments. SOC 2 (Common Criteria CC4.1 and CC4.2 monitoring), NIS 2 (Article 21(2)(f) effectiveness review), and EU AI Act (Article 17 high-risk AI QMS, internal audit of QMS effectiveness). Same audit discipline as Scope 1, scoped to satisfy the relevant regulator or trust-criteria evaluation requirement.

Three engagement models

You can engage AuditVantage® for internal audit at three levels of commitment. Each is delivered personally by the Managing Director, an ISO/IEC 27001 Lead Auditor and Lead Implementer.

Single annual audit. One standard, one defined scope, one audit cycle. Includes audit programme design, audit plan, fieldwork (on-site or remote), evidence sampling, finding documentation, written audit report, and a closing review of corrective actions before sign-off. Use this when you want a senior internal audit for a single certification, or when you are testing the engagement before committing further. Pricing on request.
Multi-standard audit programme. Combined internal audit across two or more standards in a single engagement (for example ISO/IEC 27001 + ISO/IEC 42001, or ISO/IEC 27001 + ISO/IEC 27701). Shared planning, shared evidence collection where standards overlap, integrated reporting, and a unified audit programme document. Lower total cost than two separate audits, and it surfaces cross-standard gaps that single-standard audits miss. Pricing on request.
Three-year audit programme. A locked engagement across the full certification cycle: Stage 1 surveillance preparation, Stage 2 surveillance, and recertification readiness. Annual fieldwork, integrated programme management, and continuity of auditor judgement across all three years. Best for organisations that want their internal audit to be a stable, year-on-year practice rather than a recurring procurement exercise. Pricing on request.

Where independent internal audit earns its value

A weak internal audit creates the illusion of compliance. The external certification audit then finds what the internal audit missed. The cost shows up not in fees but in delay, lost contracts, and lost trust.

A surface-level audit misses what emerges at Stage 2. Findings that could have been closed quietly in-house become major nonconformities under external scrutiny, with a six to twelve month remediation window that can delay your certification or put enterprise contracts at risk.

The value of internal audit is identification: the more we surface internally, the less the external audit escalates. That depends on depth and independence. We apply full audit discipline, as a qualified ISO/IEC 27001 Lead Auditor and Lead Implementer, testing against the actual clause and control rather than a checklist.

Independence is the other half. ISO/IEC 27001 Clause 9.2 requires the internal auditor to be independent of the activity audited. In a small or medium organisation, genuine independence is rarely achievable in-house, since an ISMS manager auditing the controls they designed is not an independent audit. An external internal auditor resolves the independence requirement and raises audit quality at the same time.

How we work

Audit programme design. We define the audit programme covering the scope, frequency, methods, and responsibilities for the engagement period, aligned to your certification cycle and the certification body's expectations.

Audit planning. For each cycle, we prepare an audit plan covering objectives, scope, criteria, schedule, and resources, shared with you in advance.

Fieldwork. Document review, interviews, walkthroughs, evidence sampling, and process observation. On-site or remote as appropriate.

Reporting. Written audit report with documented findings, observations, opportunities for improvement, and any nonconformities.

Corrective action follow-up. We review your corrective action plan against each finding, sign off where remediation is complete, and document residual items for the next cycle.

Confidentiality. Every engagement is governed by a confidentiality agreement. Findings remain entirely between AuditVantage and the engaging organisation. We never share evidence, findings, or any aspect of your work with any third party, including any certification body.

What we will not do

We will not certify you. AuditVantage® is not a certification body. Internal audit prepares you for the external certification audit; it does not replace it.

Internal audit findings remain a confidential output between AuditVantage® and the engaging organisation. We do not report internal audit results to any certification body, regulator, or third party. The information is yours; how you use it is yours.

Frequent questions

Can we not just do this ourselves? For most small and medium organisations, true independence between auditor and auditee is structurally impossible to achieve internally. An ISMS manager auditing the controls they themselves designed is not an independent audit. An external internal auditor solves the impartiality requirement and raises the audit quality at the same time.

Why not have our existing consultant do it? Independence. ISO/IEC 27001 Clause 9.2 requires the internal auditor to be independent of the activity audited. A consultant who built or advised on your management system would be auditing their own work. Implementation and internal audit are also different disciplines. We provide the independent audit, reading your management system against the actual clause and control, as a qualified ISO/IEC 27001 Lead Auditor and Lead Implementer, so the findings hold up when your external audit comes.

How is this different from the certification audit? The certification audit is a regulatory event with formal certification consequences. Internal audit is your private, confidential preparation for it. The discipline and standards are identical. The audience and the consequences are not. We deliver internal audit to the same standard the external auditor delivers the certification audit, but you see the findings, not the certification body.

What happens if you find a major nonconformity? We document it precisely, write it in clause-referenced ISO 19011 audit language, and brief your management on what remediation will close it cleanly. We never report nonconformities outside your organisation. The finding is yours, in writing, to remediate before the external auditor sees the same thing.

How long does a thorough internal audit take? For ISO/IEC 27001 with a single, well-defined scope, two to five audit days for fieldwork plus pre-audit document review and post-audit reporting. Multi-standard and larger-scope engagements scale from there. We scope the duration during the discovery call.

Ready to start?

Book a discovery call to scope the engagement model that fits your certification cycle and audit programme.

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AuditVantage® provides advisory and audit-readiness services only. AuditVantage® is not a certification body and is not a law firm. Internal audit is delivered by an ISO/IEC 27001 Lead Auditor and Lead Implementer.

What internal audit addresses

Clause 9.2 compliance
Pre-certification readiness
Surveillance preparation
Multi-standard coordination

Related services

ISO 27001, ISMS The Auditor's Lens vCISO advisory
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