ISO 9001 Latest Version and Revision History

The current edition of ISO 9001 is ISO 9001:2026. UKAS states plainly that "ISO 9001:2026 was published on 16 September 2026 and replaces ISO 9001:2015 + Amendment 1:2024". The UK national adoption is BS EN ISO 9001:2026, and BSI's own catalogue records it as "the current release of this standard". If your certificate references ISO 9001:2015, it stays valid — but only until 30 September 2029, which is a confirmed deadline rather than an expectation. This page is the register: which document is current, which are withdrawn, and what each date actually obliges you to do.

The answer in one table

Two registers matter and they are not the same. ISO publishes the international standard; BSI publishes the UK adoption under a BS EN designation. UK certificates and UK tender documents usually reference one or the other, so it is worth knowing both.

Designation	BSI catalogue status	Date
BS EN ISO 9001:2026	Current release	published 30/09/2026
BS EN ISO 9001:2015+A1:2024	Historical	current until 16/09/2026
BS EN ISO 9001:2015	Historical	current until 18/09/2024
BS EN ISO 9001:2008	Historical	current until 30/09/2015
BS EN ISO 9001:2000	Historical	current until 30/11/2008
BS EN ISO 9001:1994	Historical	current until 09/03/2005

Every row above is taken from BSI's own standard document page for BS EN ISO 9001, which lists the current release and then "Other historical versions of this standard document also exist" with the date each stopped being current.

ISO 9001:2026 is the sixth edition. ISO/TC 176/SC 2 — the technical committee that owns the standard — described it in those terms when it announced the schedule on its committee news page: "The sixth edition of ISO 9001 is scheduled for publication on 16 September 2026." That announcement is dated 7 August 2026, and the publication went ahead on the stated date. Treat that page as the committee's own announcement rather than an ISO publication: it carries a disclaimer that its content is "managed and maintained by a third-party entity" and is "not under the direct responsibility, control, or oversight of the International Organization for Standardization (ISO)".

The one that catches UK readers out

BS EN ISO 9001:2015 stopped being the current UK document on 18 September 2024 — two years before the 2026 edition existed.

That is not a typo and it is not the 2026 revision. It is Amendment 1:2024, the climate-action amendment. When BSI published BS EN ISO 9001:2015+A1:2024, the plain 2015 document became a historical version. So a business that bought "BS EN ISO 9001:2015" in, say, 2019 and has been working from that PDF ever since has been working from a superseded document since September 2024, independently of anything the 2026 edition does.

What the amendment added is short and specific. The IAF/ISO joint communiqué of 22 February 2024 reproduces both statements in full. Under clause 4.1: "Added: The organization shall determine whether climate change is a relevant issue." Under clause 4.2: "Added: NOTE: Relevant interested parties can have requirements related to climate change." The same document states that "The amendments to the standards will be published on February 23rd 2024."

Two sentences, and they are the reason a 2015-dated PDF on your shared drive is the wrong document. Our guide to Clause 4.1 and 4.2 climate change determination covers what an auditor expects to see.

What changed in the 2026 edition

UKAS is the source to use here, because the standard's own text is behind a paywall and cannot be quoted. Its ISO 9001:2026 transition bulletin characterises the revision as follows: "The majority of changes relate to clarification of existing requirements, restructuring of clauses, harmonisation with Annex SL and current ISO drafting conventions".

Three things follow from that sentence, and the third is the one people miss.

It is a revision, not a rebuild. Clarification of existing requirements is the bulk of it.
The climate statements are already in your system if you have been working to +A1:2024. They are not new to 2026.
The clauses have been restructured. This is the important one. Any clause number you have inherited from 2015-era commentary — including numbers used elsewhere on this site — cannot be assumed to hold in the 2026 edition. Verify numbering against your own copy of the published standard before you rewrite anything against it. Our clause-by-clause comparison and clause comparison tool carry the same caveat for the same reason.

The dates that bind you

The transition deadline is set by Global ACI, not by ISO and not by BSI. Global ACI — Global Accreditation Cooperation Incorporated — took over the work of the International Accreditation Forum, which "ceased operations on 01 January 2026" according to its own legacy site. If you read a guide that says the IAF "will confirm" transition arrangements, that guide is out of date by more than nine months.

Global ACI's transition requirements for ISO 9001:2026, issued as Global ACI-TECH-3-TR 2029-09-30 (M), state: "Global ACI has established a three-year transition period" and "Organisations already certified to ISO 9001:2015 will have until 30 September 2029 to complete their transition."

In chronological order, the UK timeline from the UKAS bulletin and Global ACI reads:

Date	What happens	Whose deadline
16 September 2026	Publication of ISO 9001:2026; UKAS begins accepting certification bodies' self-declarations and evidence	—
1 December 2026	"UKAS ready to begin transition assessment activity"	UKAS
1 January 2027	"Transition decisions commence"	UKAS
31 March 2027	Accreditation bodies "to be ready to assess against and support ISO 9001:2026" at the latest	Global ACI
30 June 2027	Certification bodies "required to submit their transition declaration and supporting information"	Global ACI
30 September 2027	"All UKAS transition decisions to be completed"	UKAS
16 March 2028	"CABs to stop accepting new applications against the previous version of the standard"	UKAS
30 September 2029	"CABs to transition all certified customers to the revised standard"	UKAS

Note that the two 2028 dates in circulation are not interchangeable. Global ACI's international rule is that "From 31 March 2028, new and initial accredited certifications may only be issued to ISO 9001:2026." The UKAS milestone that UK businesses actually experience is 16 March 2028, worded differently and set by a different body. Quote whichever applies to you; do not merge them.

Nothing on that list is your deadline except the last one. Everything between December 2026 and September 2027 is the accreditation system transitioning itself, and it is the reason you cannot book a transition audit the week you decide to.

Does your certificate expire?

No. A certificate referencing ISO 9001:2015 remains valid through the transition period. What changes is what your certification body is permitted to do, and when.

One consequence is worth spelling out, because it is the most expensive mistake available here. UKAS states: "Until UKAS has made an accreditation decision to transition, certification issued against ISO 9001:2026 must not be represented as accredited certification." A body that offers you a 2026 certificate before it has been granted transition is offering you an unaccredited certificate — which, if you certified in order to satisfy a customer or a framework, fails the requirement you were certifying for.

The practical move is also the cheapest one. Global ACI confirms that the transition "may take place during a scheduled surveillance or recertification audit, or through a separate transition audit." Aligning it with an audit already in your programme means you pay for additional time, not for an additional visit. The ISO 9001:2026 transition cost breakdown works through the difference.

What to do about it

If you are…	Do this
Certified, working from a 2015 PDF	Buy the current standard. You are two documents behind, not one.
Certified, transition not planned	Ask your body when it expects its UKAS transition decision, then book into an audit already scheduled. The transition plan sets out the first 90 days.
Certifying for the first time	Certify to 2026 directly if your timescale allows it; you avoid transitioning later. If you need a certificate before your chosen body has transition, 2015 applications are accepted until 16 March 2028. How to get certified covers the process.
Unsure which edition your certificate names	Read the certificate. It states the standard and edition it was issued against.

Practical takeaway checklist

Current international edition: ISO 9001:2026, published 16 September 2026, the sixth edition
Current UK adoption: BS EN ISO 9001:2026, recorded by BSI as published 30/09/2026
BS EN ISO 9001:2015 has been a historical version since 18 September 2024 — the climate amendment, not the 2026 revision
Your deadline is 30 September 2029, set by Global ACI and mirrored by UKAS
UKAS transition decisions for certification bodies only begin 1 January 2027 — you cannot transition before your body can
A 2026 certificate issued before your body's UKAS decision is not accredited certification
Clauses have been restructured, so verify every clause number against the published text rather than against older commentary

This article is for general informational purposes only and does not constitute legal, regulatory, or professional compliance advice. ISO 9001 is a voluntary standard, not a legal requirement — losing certification is a commercial consequence, not a regulatory one. The text of ISO 9001:2026 is not publicly available, so this page cites what UKAS, Global ACI, BSI's catalogue and the ISO/TC 176/SC 2 committee news page have published rather than the standard itself; nothing here should be read as a quotation from the standard. Verify requirements and dates with your UKAS-accredited certification body.