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ISO 14001:2026 is published. The deadline is not.

The fourth edition published on 15 April 2026, and ISO 14001:2015 was withdrawn the same day. Four months later, most published material in this industry still describes the 2015 edition as current — and nobody, including ISO and Global ACI, has published a transition deadline. Here is what is confirmed, what is reported, and what is still open.

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Last verified 27 August 2026

ISO 14001:2026 published?
Yes. 15 April 2026, stage 60.60.
ISO 14001:2015 withdrawn?
Yes. 15 April 2026, stage 95.99 — the same day.
Transition deadline
Not published by anyone. Global ACI's own record still calls the document "IAF MD XX".
Can a certification body audit you to it?
Some can. ANAB has begun accrediting certification bodies to the 2026 edition — see below.

Why almost nobody has this right

There is a reason the ISO 14001 revision has attracted a fraction of the attention that ISO 9001:2026 has, and it is not that it matters less. It is that ISO 9001 is the bigger standard commercially, so the consulting and certification industry pointed its content machinery at the revision that had not happened yet — and largely missed the one that had.

We are not exempt from that. Our own ISO 14001 pages described the 2015 edition as current until 26 August 2026, four months after it was withdrawn, and we found it during an audit of our own site rather than by noticing at the time. We are saying so here because a page that lectures an industry about currency while quietly correcting itself is worth less than one that shows its working.

The test worth applying to anyone selling you environmental management consulting: ask which edition they are quoting clause numbers from. If the answer is 2015 without qualification, they have not opened the new one.

What ISO itself says changed

This is worth reading carefully, because it is a genuine contrast with ISO 9001:2026 and the two get conflated constantly. For ISO 14001:2026, ISO publishes its own summary of what changed. For ISO 9001:2026 it publishes none at all — no news item, no abstract, no change list. If you have seen a five-point ISO 9001 change list attributed to ISO, it is not ISO's, and the "Annex A clarifies key terms" line in it is ISO's language about this standard.

ISO groups the ISO 14001:2026 changes into three areas:

  • A better understanding of environmental context — concentrated in clauses 4.1 and 4.2.
  • Stronger leadership accountability.
  • A clearer focus on outcomes rather than on process for its own sake.

And it names these specific changes in the new edition:

  • A new clause 6.1.4 on structured decision-making.
  • A new clause 6.3 on change management.
  • The term "outsourcing" replaced by "externally provided processes, products and services" — aligning the vocabulary with the other management system standards, and widening what the requirement plainly covers.
  • Strengthened internal audit and management review requirements.
  • Annex A plays a more active role in clarifying key concepts.
  • Improved clarity throughout.

ISO's own framing of the release, from the Secretary-General: the new edition is "smoother to implement and integrates seamlessly with other ISO management system standards." Around 670,000 organisations worldwide hold ISO 14001 certification.

The two new clauses are the part that will cost you time

Reworded requirements are cheap to transition. Genuinely new ones are not, and there are two.

Clause 6.1.4, structured decision-making. Most environmental management systems determine aspects, rank them by some significance criteria, and then make the actual decisions — what to spend on, what to defer, which supplier to accept — somewhere else entirely, usually in a meeting nobody minuted. A requirement for structured decision-making asks you to close that gap. In practice that means the criteria are written down before the decision, the decision records which criteria it turned on, and someone can reconstruct it a year later. That is not hard, but it is a habit rather than a document, and habits take longer to install than procedures.

Clause 6.3, change management. ISO 14001:2015 dealt with change in fragments — planned changes under clause 6, changes to the system under 6.1, operational changes under 8.1. Pulling it into its own clause means an auditor can ask a single, answerable question: show me how a change gets assessed for environmental consequence before it happens. A new line, a new solvent, a new supplier, a new shift pattern. Most systems can answer that for capital projects and cannot answer it for the change that actually caused the problem.

The vocabulary change from "outsourcing" to "externally provided processes, products and services" looks cosmetic and mostly is — but it brings 14001 into line with the language ISO 9001 has used since 2015, which matters if you run an integrated system and have been maintaining two different words for the same control.

Update, 27 August 2026: accreditation has started

When we published this page we could not establish whether accredited certification to the 2026 edition was available yet, and said so. That has now changed, and in the direction of good news.

ANAB has opened its transition declaration process for ISO 14001:2026 certification bodies, and on 24 August 2026 DQS announced it was among the first certification bodies accredited by ANAB to certify organisations against the new edition. So accredited certification to ISO 14001:2026 is beginning to become available in the United States, body by body, as each extends its own accreditation.

That does not mean a transition deadline exists. It still does not. But it does mean the question to put to your certification body has changed from “when will you be able to?” to “are you accredited yet, and what is your schedule?”

Worth noting the asymmetry, because it tells you what to expect for ISO 9001: ANAB has opened this process for ISO 14001:2026 and published nothing equivalent for ISO 9001, which has not published yet. The bodies work through the standards sequentially, after publication.

The deadline: what we can actually establish

Transition periods for accredited certification are set by the accreditation community in a mandatory document. That community is now Global ACI, which replaced both IAF and ILAC on 1 January 2026.

Global ACI publishes its General Assembly resolutions. Resolution 2025-18 lists the inherited IAF documents it will continue to develop — the ones, in its own words, "under review or revision". One entry on that list reads:

IAF MD XX Transition Requirements for ISO 14001

The XX is unallocated. The document that will set your deadline has not been given a number, which means it has not been issued. We checked the later General Assembly resolutions and the 2026 e-ballots as well, in case a number had been allocated since. It has not.

ISO's side is equally empty. Its published guidance on transitioning to the 2026 edition gives four steps — review the standard, run a gap analysis, develop a transition roadmap, build internal readiness — and states no date and no duration anywhere.

One accreditation body has now set a date, and it is worth understanding exactly what that date covers. UKAS, the UK national accreditation body, published a technical bulletin dated 22 May 2026 setting 30 April 2029 as its deadline for the certification bodies it accredits — while itself still referring to the anticipated publication of the Global ACI mandatory document for this transition, six weeks after the standard had published.

Read that carefully, because it cuts both ways. It is the first hard date from a body with real authority, and 30 April 2029 is very likely close to where this lands. But it is UKAS setting a deadline for UKAS-accredited certification bodies in the absence of an international one. It is not the Global ACI transition period, it does not automatically bind an ANAB-accredited body certifying a US manufacturer, and UKAS itself was still waiting on the international document when it issued it. If your certificate comes from a UKAS-accredited body, that date is real for you. If it does not, treat it as the strongest available indication rather than as your deadline.

One practical note if you go looking yourself: Global ACI's site is at global-aci.org, with the hyphen. The unhyphenated domain is an unrelated placeholder with no content on it.

The uncomfortable bit: published, withdrawn, and no window

Put the three facts next to each other and something odd appears. The new edition is published. The old edition is withdrawn. And no transition period has been set.

That is not a crisis and it does not invalidate anybody's certificate — withdrawal of a standard is a normal step and certificates issued against it remain valid through whatever transition is eventually defined. But it is worth sitting with, because it is the single best answer to anyone insisting your ISO 9001 clock is already running. Here is a standard that has been published for four months, whose predecessor has been withdrawn for four months, and which still has no deadline. Urgency in this industry is very often manufactured.

The corollary matters more, though, and it points the other way. Because no window has been announced, nobody knows how long it will be — and when it is announced, every organisation holding a 14001 certificate will be working to the same dates at the same time, alongside everyone transitioning ISO 9001. The argument for starting is not that you are late. It is that the work is cheaper and better done when it is not queued.

Common questions

Is ISO 14001:2026 actually published?

Yes. It published on 15 April 2026 and sits at ISO stage 60.60 — International Standard published. This is the fourth edition. We are being emphatic because a great deal of published material, including our own pages until we corrected them in August 2026, still describes the 2015 edition as current.

Is our ISO 14001:2015 certificate still valid?

Your certificate is valid. But note what happened to the standard behind it: ISO 14001:2015 was withdrawn on 15 April 2026 — the same day the new edition published, at stage 95.99. Withdrawal of a standard does not invalidate certificates issued against it; that is what a transition period is for. It does mean the document your certificate references is no longer a current ISO standard, which is exactly why the transition period matters and exactly why its absence is worth knowing about.

When is the transition deadline?

There isn't one that we can find, and we looked hard because it is the question everybody asks. ISO's own transition guidance gives four steps — review the standard, run a gap analysis, develop a roadmap, build internal readiness — and states no date and no duration. Global ACI, which replaced IAF and ILAC on 1 January 2026 and is the body that sets transition periods for accredited certification, still lists the relevant document in its own records as "IAF MD XX Transition Requirements for ISO 14001". The XX is unallocated. The document has not been issued. The closest thing to a hard date is a UKAS technical bulletin of 22 May 2026 setting 30 April 2029 as the deadline for the certification bodies UKAS accredits — issued, notably, while UKAS was itself still awaiting the Global ACI document. That is a real date, but it binds UKAS-accredited bodies rather than the world. If your certificate comes from an ANAB-accredited body, treat it as the strongest available indication rather than as your deadline.

Can we get certified to the 2026 edition right now?

Ask your certification body, and we mean that literally rather than as a deflection. A certification body cannot issue accredited certificates to a new edition until its own accreditation has been extended to cover it. We could find no published statement from ISO or Global ACI on when that becomes available for ISO 14001:2026, and Global ACI's scope-extension resolutions to date list no ISO 14001:2026 scope. Rather than guess, we tell clients to ask their own body, which will know its own accreditation timetable long before anyone publishes it.

What actually changed?

Unusually, ISO publishes its own summary for this one, so we can quote rather than infer. ISO describes three areas: a better understanding of environmental context in clauses 4.1 and 4.2, stronger leadership accountability, and a clearer focus on outcomes. The structural changes it names are a new clause 6.1.4 on structured decision-making, a new clause 6.3 on change management, the replacement of "outsourcing" with "externally provided processes, products and services", strengthened internal audit and management review requirements, and a more active role for Annex A. Worth contrasting with ISO 9001:2026, for which ISO publishes no change list at all — a distinction that has caused real confusion, including on our own pages before we caught it.

We hold ISO 9001 as well. Should we plan the two transitions together?

Almost certainly yes, and the sequencing is the interesting part. ISO 14001:2026 is already published; ISO 9001:2026 is scheduled for 16 September 2026. Both sit on the harmonized structure, so context, interested parties, leadership, planning, internal audit and management review are shared ground that you can do once instead of twice. If you run an integrated system, treating these as two projects is paying twice for the same work.

What should we actually do now?

Three things, none of them urgent. Get the new text and read clauses 6.1.4 and 6.3, because those are new rather than reworded. Ask your certification body when they expect to be accredited for the 2026 edition and whether your transition can ride a scheduled surveillance visit rather than becoming a separate audit — that question alone can be the difference between a small cost and a real one. And if you also hold ISO 9001, plan the two together. What you should not do is buy urgency against a deadline that does not exist.

What we would do about it

If you hold ISO 14001:2015, the sensible sequence is short. Read clauses 6.1.4 and 6.3, because they are new rather than reworded and they are where the work is. Ask your certification body two questions: when they expect to be accredited for the 2026 edition, and whether your transition can be conducted at a scheduled surveillance visit rather than as a standalone audit — the answer to the second is worth real money. And if you also hold ISO 9001, plan both transitions as one exercise, because the harmonized structure means most of the changed ground is shared.

That is work we do — ISO 14001 consulting, and ISO 9001:2026 transition support where both standards are in play. But the three steps above are worth doing whether or not you ever speak to us, which is why they are on a reference page rather than behind a form.

Changelog

  • 2026-08-27 Two facts moved from unverified to verified. ANAB has opened its transition declaration process for ISO 14001:2026 certification bodies, and DQS announced on 24 August 2026 that it is among the first accredited by ANAB to certify to the new edition — so accredited certification is beginning to be available, body by body. Separately, UKAS set 30 April 2029 as its deadline for the certification bodies it accredits, in a technical bulletin dated 22 May 2026. Both added, with the scope limits on the UKAS date stated.
  • 2026-08-26 Page published. ISO 14001:2026 confirmed published 15 April 2026 at stage 60.60, with ISO 14001:2015 withdrawn the same day at stage 95.99. No transition deadline published by ISO or by Global ACI; the relevant mandatory document is still listed by Global ACI as unnumbered.

We maintain this page. If any of it has moved since we last checked, tell us and we will correct it the same day — and record the correction here rather than quietly editing it.

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