Transition Deadline and Timeline

ISO 9001:2026 was published on 16 September 2026. The transition period is expected to run three years from that date, which puts the end of the window at 30 September 2029 — with the practical cut-off for useful action considerably earlier than that.

The dates that matter

Date	What happens
27 August 2025	Draft International Standard published
16 September 2026	ISO 9001:2026 published — the transition clock starts
Late 2026 into 2027	Certification bodies complete accreditation to audit against the new edition; transition audits become available
Around April 2028	Expected last date for issuing new ISO 9001:2015 certificates. Certificates issued near this point carry shortened validity ending at the transition deadline
30 September 2029	Expected expiry of all ISO 9001:2015 certificates, whatever their printed expiry date

The detail most people miss

Your ISO 9001:2015 certificate has an expiry date printed on it. The transition deadline overrides that date. If your certificate says it runs to March 2030 but the transition deadline is September 2029, the certificate becomes invalid in September 2029. This catches out companies who look at the certificate on the wall and conclude they have plenty of time.

The same applies to anyone certifying to the 2015 edition late in the window. A certificate issued in, say, mid-2028 will not get a full three-year cycle — it will be issued with validity truncated at the transition deadline.

Work backwards from your own audit cycle

The transition deadline is not really your deadline. Your deadline is your last surveillance or recertification audit before it, because that is your last scheduled opportunity to be audited against the new requirements without paying for a special visit.

Your next recertification	Your realistic transition audit	Start the gap work by
2027	At that recertification	Now
2028	At that recertification	Mid 2027
2029, before September	At that recertification — with no margin for error	2028, and confirm the audit date early
2029, after September	You need an earlier transition audit, most likely at a 2028 surveillance visit	2027 — speak to your certification body now

Why late transitions go wrong

Certification bodies have a finite number of accredited auditors and a fixed number of audit days in a year. Every previously certified organization in the country needs a transition audit inside the same window, and the demand is not spread evenly — it clusters heavily in the final twelve months. In the 2015 transition, companies that waited found audit dates unavailable, and some certificates lapsed for reasons that had nothing to do with the quality of their systems.

There is a second, quieter problem with going late. If the transition audit raises a major nonconformity, you need time to correct it, submit evidence and have it verified. Close to the deadline that time may not exist. Transitioning with a year in hand turns a major nonconformity into an inconvenience rather than a lapsed certificate.

How the transition audit itself works

In most cases the transition is not a separate audit. Your certification body adds time to a scheduled surveillance or recertification visit to cover the new and changed requirements, and reissues the certificate to ISO 9001:2026 on a successful outcome. Expect additional audit time — commonly around half a day to a day depending on the size and complexity of your organization — and expect a focused examination of the new clauses rather than a full re-audit of everything.

Before that visit your certification body will usually want to see that you have carried out a gap analysis, updated your documented information, trained your people, run an internal audit against the 2026 requirements and held a management review covering the transition. That list is not arbitrary — it is the evidence trail the auditor works through.

What to do in the next thirty days

1. Call your certification body and ask two questions: when is my next surveillance or recertification audit, and when can you audit to ISO 9001:2026?
2. Buy the standard and read Annex A.
3. Run a first-pass gap assessment using the transition checklist.
4. Put a transition item on the agenda of your next management review.

Those four steps take a few hours and convert an open-ended obligation into a dated plan. If you would rather not run the gap assessment yourself, we will do it for you.

Frequently Asked Questions