ISO 9001 certification, and what the 2026 edition changes

The 2026 edition is new — most of what you will read online is out of date

ISO published the sixth edition of ISO 9001 on 16 September 2026. For eleven years before that, ISO 9001:2015 was the current standard, which means the overwhelming majority of articles, consultant pages and checklists describing "the current version of ISO 9001" describe the previous one.

If you are reading anything about ISO 9001 at the moment, check the edition it refers to before acting on it. That applies to this page too: the review date is at the top, and it is there so you can judge how current it is rather than assume.

What ISO 9001 is actually for

ISO 9001 is about quality management: consistently meeting customer and regulatory requirements, and improving the processes that deliver a product or service. It is the most widely used management system standard in the world, and within the ISO 9000 family it is the only one organizations can be certified against — though certification is voluntary, not mandatory.

For most employers the reason to hold it is commercial rather than internal. Customers ask for it, tenders require it, and supply chains use it as a baseline assurance that a supplier has repeatable processes rather than capable individuals.

ISO 9001 and ISO 45001 are different standards, not tiers

These get conflated constantly, and the distinction is simple: ISO 9001 governs quality — whether what you deliver consistently meets requirements. ISO 45001 governs occupational health and safety — whether people get hurt doing the work. Neither is a more advanced version of the other, and holding one says nothing about the other.

They are however deliberately compatible. Both are written on the ISO Harmonized Structure, so clauses 4 to 10 cover context, leadership, planning, support, operation, performance evaluation and improvement in the same order. An organization pursuing both should build one integrated management system with a single internal audit programme and a single management review, not two parallel systems that have to be reconciled.

If you already hold ISO 9001:2015

A new edition does not invalidate your certificate overnight. Revisions of this kind are normally followed by a transition period during which existing certificates remain valid and organizations move to the new edition at a surveillance or recertification audit.

For ISO 9001:2026 a transition period of around three years is widely expected, which would put the retirement of 2015 certificates somewhere around September 2029 — but the formal transition arrangements are set by the International Accreditation Forum, and at the time of writing that confirmation is what to watch for. Treat any specific deadline you read right now, including that one, as expected rather than settled, and confirm it with your certification body before planning around it.

The practical advice is unglamorous: do not rush a re-audit, and do not ignore it either. Ask your certification body what they intend to do at your next scheduled audit, because they are the ones who will assess you.