ISO 9001:2026: What Changed and the Transition Dates

ISO 9001:2026 is the new edition of the world’s most widely used quality management standard. ISO published it on 16 September 2026 as the sixth edition, replacing ISO 9001:2015 (including its 2024 climate change amendment). The changes are evolutionary: the clause 4 to 10 structure stays, and the main additions are quality culture and ethical behaviour, separate actions for risks and opportunities, tighter planning of changes and new management review inputs. Certified organisations have a three-year transition, and ISO 9001:2015 certificates stop being valid after 30 September 2029.

This guide covers what changed, every date in the transition and what to do at your next audit. If you are new to the standard, our guide to what ISO 9001 is explains the basics first. If you are building a quality management system (QMS) from scratch rather than transitioning, start with our ISO 9001 consultant service.

When was ISO 9001:2026 published?

ISO published ISO 9001:2026 on 16 September 2026, and its ISO 9001:2026 listing shows it as edition 6. It is the first full revision since 2015, following a 2023 global consultation that backed revising the standard. ISO says the new edition focuses on clarity, so that organisations of every size can understand the requirements, puts more weight on quality culture and leadership, separates risks from opportunities and aligns more closely with other management system standards. ISO 9000, the vocabulary standard that ISO 9001 relies on for its quality terms, now also carries a 2026 date.

What changed in ISO 9001:2026?

The requirements changed in a handful of clauses. The table summarises them, based on the key changes listed in the transition requirements published by Global ACI, the international body that sets mandatory transition rules for the certification bodies within its recognition arrangement.

Global ACI’s transition document describes the overall changes as minimal and expects most organisations to find them intuitive and achievable with reasonable effort. In practice the work sits in leadership evidence, the risk and opportunity register and a few procedures, not in a rebuild.

What did not change?

• The clause 4 to 10 structure shared with other ISO management system standards, including ISO 27001 and ISO 14001.
• The process approach and the core requirements on customers, suppliers, operations, internal audit and corrective action.
• Climate change as a consideration when you review your context and interested parties, which the 2024 amendment introduced.
• The certification model: Stage 1 and Stage 2 audits, a three-year certificate and surveillance audits in years two and three.

When must I transition to ISO 9001:2026?

You must complete the transition, including the certification body’s decision, before 30 September 2029. The dates come from Global ACI’s mandatory transition document, Global ACI-TECH-3-TR 2029-09-30 (M), issued on 4 September 2026 and in force from 16 September 2026. Each deadline is counted from the last day of the publication month.

Under these rules, a certification body can only issue ISO 9001:2026 certificates once its own transition has been approved. The earliest date you can transition therefore depends on your certification body as well as on you.

Is my ISO 9001:2015 certificate still valid?

Yes. An ISO 9001:2015 certificate stays valid until its printed expiry date or 30 September 2029, whichever comes first. If the printed expiry date is later, the certificate still stops being valid at the end of the transition unless you have transitioned, and your certification body may shorten the printed date to avoid confusion.

If you decide not to transition, your certification body can keep auditing you against the 2015 edition, but it must tell you that your certificate will expire at the end of the transition period.

How does the ISO 9001:2026 transition audit work?

The transition audit checks the changed requirements, any changes to your context and whether anything else in your QMS needs to change. Under the Global ACI rules:

• It can take place at a scheduled surveillance audit, at a recertification audit or as a separate special audit.
• The certification body decides whether extra audit time is needed, based on how much your system has changed and whether the transition is combined with a routine audit. A full recertification audit may need little or no extra time.
• It can be carried out remotely if the certification body can show the audit objectives are still met.
• The certification body then makes a transition certification decision based on the audit results.

What should certified organisations do now?

1. Buy ISO 9001:2026 from ISO or your national standards body (BSI in the UK).
2. Ask your certification body for its plan: when it expects to audit to the 2026 edition, and whether it will use your next surveillance or recertification audit.
3. Run a gap analysis against the changed clauses in the table above.
4. Update the affected documents: quality policy, objectives, risk and opportunity register, change procedure, awareness training and management review agenda.
5. Brief top management. Quality culture and ethical behaviour is a leadership requirement, so expect the auditor to ask leaders how they promote it.
6. Complete an internal audit and a management review against the 2026 edition before the transition audit, so there are records to sample.
7. Book the transition audit with enough time to close any nonconformities well before 30 September 2029.

Should a new ISO 9001 project use the 2015 or 2026 edition?

Build to ISO 9001:2026. No new ISO 9001:2015 certificates can be issued after 31 March 2028, and any 2015 certificate expires on 30 September 2029, so building to the old edition means doing the work twice. If your certification body is not yet able to certify to the 2026 edition when you are ready, a system built to the new text will usually cover the 2015 requirements too, and the later transition becomes much simpler.

If you run an integrated management system, plan the transitions together. ISO 14001 was also revised in 2026, with its own three-year transition, so see our ISO 14001 certification page for that timeline. If you hold ISO 27001 as well, our comparison of ISO 9001 vs ISO 27001 explains how the shared structure lets one risk process, one internal audit programme and one management review cover both.

How can an ISO 9001 consultant help with the transition?

A consultant is optional, but it can shorten the transition for busy teams. Typical support is a gap analysis against the changed clauses, a rewrite of only the affected documents, a short workshop for top management on quality culture and ethical behaviour, an objective internal audit to the 2026 edition and support during the transition audit. The certification body still decides the outcome of the transition audit on its own. Our wider ISO certification service covers the other standards you may be transitioning at the same time.

Why Sovereign Secure

• We hold ISO 27001 ourselves, so we know management system certification audits from the certified side.
• ISO consultancy across standards, including ISO 9001, 14001, 45001, 22301 and 27001, so integrated systems are handled in one plan.
• Independent certification. Certification audits are carried out by our partner certification body, MQA International, which makes its own certification decisions. We never certify a system we helped build.
• A UK company since 2012, headquartered in Accrington, Lancashire, and an IASME-licensed Cyber Essentials certification body.

Plan your ISO 9001:2026 transition

Tell us your current certificate’s expiry date, your next audit date, how many people and sites are in scope and any other standards you hold. We will scope a transition gap analysis and the support you need, and send a fixed quote. Request your ISO 9001:2026 transition quote or call +44 161 523 5276.