🌐 Based on IAF MD5:2023 (Issue 4) · IAF + ILAC are now the Global Accreditation Cooperation (Global ACI) · Operational Jan 2026
IAF MD5:2023 (Issue 4) · NABCB-Aligned · Takes 60 seconds

Is your audit manday calculation truly compliant?

Free checker for certification bodies and lead auditors worldwide. Instant result — no signup required.

24
IAF employee bands
6
ISO standards covered
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Why most CBs are at risk

IAF MD5:2023 Issue 4 changed the rules. Most certification bodies haven't caught up.

These are the compliance gaps we see in certification bodies across NABCB, UKAS, ANAB, and DAkkS-accredited organisations every week.

📊

Mandays still calculated in Excel

One formula error, one wrong employee band — and you're under-auditing a client. Accreditation bodies are flagging this during surveillance.

⏰

Audit programs not updated after Issue 4

IAF MD5:2023 introduced new calculation rules. Many CBs updated their certificates but never recalculated existing client audit durations.

🔀

Inconsistent calculations across auditors

Different auditors in the same CB calculate the same client differently. No single source of truth for what IAF MD5:2023 mandates.

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Multi-site complexity miscalculated

Multi-site clients require multiplication factors that most CBs apply incorrectly. The margin for error grows with every additional site.

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No audit trail for accreditation visits

When NABCB or UKAS asks how you calculated mandays for a specific client, most CBs can't produce a documented, structured answer.

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Scheme expansion means manual recalculation

Every time you add a new ISO scheme, every client's manday needs recalculating. Done manually, this takes days — and introduces new errors.

This free checker identifies your compliance status in 60 seconds.
ISO Application Platform automates it permanently for your entire CB.

See ISO Application Platform →
1

Enter your client details

Count temporary & contract staff as full; part-time at 0.5 FTE (IAF MD5 §1.9)
2

Your compliance result

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Your mandays
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IAF MD5 baseline
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MD5 floor (−30%)
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Gap vs baseline

✅ Great — you're compliant for this client. But are you compliant across your entire portfolio? ISO Application Platform automates IAF MD5:2023 calculations for every client, every scheme, every audit cycle — so you never have to run this check manually again.

Automate for your entire CB →

⚠️ You're below the IAF MD5 baseline — every reduction must be documented and justified (§3.9). ISO Application Platform calculates and documents justified manday reductions across all clients and generates audit-ready compliance reports before your next surveillance visit.

Fix it permanently with ISO Application →

🔴 This is a non-conformance risk that needs immediate correction. ISO Application Platform calculates the correct mandays for every client in your portfolio, generates IAF-aligned audit programs, and produces documentation for your next NABCB or UKAS surveillance.

Get a demo — fix this now →
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ISO Application® Platform

This checker shows you if you're compliant.
ISO Application Platform keeps you compliant.

Stop running manual checks. ISO Application Platform automates IAF MD5:2023 manday calculations, NABCB audit planning, certification body compliance management, and accreditation documentation — for every client, every cycle, automatically.

Automates IAF MD5:2023 manday calculations
NABCB audit program planning
Multi-scheme, multi-site management
Audit-ready compliance documentation
Global ACI-aligned reporting
Built for NABCB, UKAS, ANAB, DAkkS CBs
Explore ISO Application Platform → Book a 30-min demo
Based on IAF MD5:2023 (Issue 4)
NABCB-aligned
Global ACI-aware (IAF + ILAC)
Used by certification bodies worldwide
Completely free