5 Common Mistakes in Internal Audits — and How to Avoid Them

Internal audits are a core requirement across ISO standards, but many businesses treat them as a formality. If you're preparing for an external audit or just trying to make your internal audits more effective, watch out for these common pitfalls:

1. Auditing Your Own Work

Even in small teams, audits must be objective. If independence isn’t possible, introduce peer review or rotate roles.

2. Using the Same Checklist Every Time

Audits should evolve. Static checklists miss emerging risks, customer complaints, and new regulatory concerns.

3. Focusing on Compliance, Not Effectiveness

Ask: is the process working? Are objectives being met? ISO wants assurance of performance, not just paperwork.

4. Not Following Up on Previous Findings

Always revisit past NCs and observations. Closure is not just about signing off — it's about confirming effectiveness.

5. Poor Record-Keeping

Audit evidence needs to be clear, structured, and linked to findings. Vague notes undermine the whole process.

If internal audits are something your team struggles with, or if you're looking to train internal auditors, get in touch for tailored support.

Consultancy Support: https://www.isosystems.org.uk/isosupport

Internal Audit Training: https://www.isosystems.org.uk/internal-auditor-training