ISO 14001:2026
The deadline is 30 April 2029. You will see it quoted as April.
This is the ISO transition that is actually running. It has published, accreditation-backed dates, which ISO 9001:2026 does not. Those dates are widely misquoted, usually by two weeks, and always by people deriving them rather than reading them.
Every fact below is attributed. Where something is inference rather than publication, it says so. Last verified 14 September 2026.
The published timetable
What UKAS actually set.
ISO 14001:2026 was published on 15 April 2026 as the fourth edition, replacing both ISO 14001:2015 and its 2024 climate amendment. UKAS issued its transition bulletin on 22 May 2026. These are its dates.
- 15 April 2026ISO 14001:2026 published. UKAS begins accepting self-declarations and evidence of implementation from certification bodies.
- 4 May 2026UKAS ready to receive submissions through its portal and to begin transition assessments.
- 30 November 2026First tranche of UKAS decisions completed, for certification bodies that submitted complete and sufficient evidence by the end of October 2026.
- 1 December 2026Second and final tranche begins, first come first served.
- 30 April 2027All UKAS transition decisions completed.
- 31 October 2027Certification bodies stop all new certifications to the 2015 version.
- 30 April 2029Certification bodies to have transitioned all certified customers to the revised standard.
Where the other dates come from
Three years from a 15 April publication gives 14 or 15 April 2029, depending on how you count. UKAS did not count. It set the end of the month. The gap is two weeks, which sounds trivial until it is the fortnight your certificate lapses in.
| Source | Date given | Note |
|---|---|---|
| UKAS | 30 April 2029 | Published, and the one that governs a UKAS-accredited certificate. |
| NQA | 14 April 2029 | Three years from publication, to the day. |
| certification comparison sites | 15 April 2029 | Same arithmetic, off by one. |
| LRQA | Early April 2029, elsewhere before May 2029 | Two different answers on the same site. |
| DQS | Anticipated May 2029 | States it awaits final official confirmation. |
| BSI | April 2026 to April 2029 | A window rather than a date. |
Worth noting for context: no international mandatory transition document exists for ISO 14001:2026. The International Accreditation Forum ceased operations on 1 January 2026 and its unfinished work passed to Global Accreditation Cooperation Incorporated, which has not published one. UKAS set the UK timetable anyway, and reserved the right to revise it if a Global ACI document later conflicts.
The expensive mistake
Transitioning too early buys you an unaccredited certificate.
UKAS is explicit. Certification to ISO 14001:2026 may only be issued under accreditation once UKAS has made a positive decision on that certification body. Anything issued before that decision is, in UKAS's own word, unaccredited.
Certification bodies are being assessed in two tranches, with every decision due by 30 April 2027. So there is a window, running now, in which a body can audit you against the new edition and hand you a certificate that will not survive scrutiny in a tender.
The question to ask, in writing, before booking anything: has your certification body had its UKAS accreditation extended to ISO 14001:2026 yet, and on what date. If the answer is not yet, a certificate issued now is not the thing you are paying for.
One number in that bulletin is widely misread. UKAS states a minimum assessment effort of 1.75 days. That is UKAS assessing the certification body, not your transition audit. No certification body has published a duration or a cost for a client transition audit, so treat any figure you are quoted as that body's commercial choice rather than a requirement.
Clause by clause
What changed, and what it demands.
The same question as always: does this create a record you do not already keep, or does it widen one you do? Two changes are strong candidates for genuinely new documented information. The rest is widening.
| Clause | What changed | New record? | Source |
|---|---|---|---|
| 4.1, 4.2Context and interested parties | Broader environmental conditions to consider: pollution, natural resource availability, biodiversity and ecosystem health alongside climate change. Your issues register gains rows. The clause still attaches no documented-information duty. | No | ISO explainer; BSI, DQS, SGS |
| 4.3Scope of the EMS | The life cycle perspective now bears on how the scope is determined. The scope was already required to be available as documented information, so the document exists; what it has to reflect widens. | No | BSI |
| 5.3Roles, responsibilities and authorities | Retitled: the word Organizational is dropped. Clause 5.1 also asks leadership to support all relevant roles rather than management roles only. | No | Contents pages of the published standard; BSI |
| 6.1.4Risks and opportunities (new) | A new subclause, separating risks and opportunities from environmental aspects and compliance obligations. The old 6.1.4 Planning action is renumbered 6.1.5. Issues identified under clause 4 no longer flow automatically into risks, so a filtering step has to be visible. | Likely | Contents pages; ISO explainer; ANAB, SGS |
| 6.3Planning of changes (new) | Did not exist in 2015. A structured process to identify, assess and control changes affecting the environmental management system. Of everything in the revision, this is the likeliest to demand a document you do not currently hold. | Likely | Contents pages; DQS, BSI, DNV, ANAB |
| 6.1.2, 8.2Emergency situations | The 2015 test of reasonably foreseeable situations is replaced by broader identification, derived through risks and opportunities rather than through aspects alone. The determination survives; how you reach it changes. | No | BSI, SGS, DNV, ANAB |
| 6.1.3Compliance obligations | Terminology only: meet compliance obligations replaces fulfil compliance obligations. The subclause is otherwise unchanged. | No | ISO brochure; SGS |
| 8.1Operational planning and control | Outsourced processes becomes externally provided processes, products and services, extended across the value chain but scoped to those relevant to the intended outcomes of the system. The category widens while the relevance test narrows. | No | ISO explainer; BSI, DNV, SGS, Amtivo |
| 9.2Internal audit | Audit objectives must now be defined alongside scope and criteria. ISO's own explainer describes the requirement as documented audit programmes and objectives. This is the clearest new documented-information requirement in the revision, and the cheapest to fix: a line in every audit plan. | Yes | ISO explainer; BSI, DQS, ANAB, SGS, LRQA, Amtivo |
| 9.3.1, 9.3.2, 9.3.3Management review | Split into general, inputs and results, with the inputs stated in mandatory language. Evidence of review results was already required to be retained; the inputs are no longer optional. | No | Contents pages; BSI, ANAB |
| 10.1, 10.2Improvement | Clause 10 goes from three subclauses to two. General is deleted and continual improvement is promoted to 10.1. Renumbering, not new obligation. At least one certification body has described this incorrectly. | No | Contents pages of the published standard |
| 7.5Documented information | The maintain and retain distinction is removed, standardised to documented information being available whenever needed, regardless of medium or format. UK auditors have leaned on that distinction for a decade. | No | DQS, SGS |
| Annex AGuidance, expanded | Grows from roughly fourteen pages to eighteen and takes a more active role in explaining intent. It is informative: an auditor cannot raise a nonconformity against it. | No | Contents pages; ISO explainer |
| Annex BRemoved | The 2015 to 2004 correspondence table is gone. Unlike ISO 9001:2026, no new annex is added: ISO 14001:2026 has Annex A only. | No | Contents pages of the published standard |
Structural facts here are read from the contents pages of the published standard. The new-record column is our assessment from ISO's explainer material and certification body guidance: neither ISO nor UKAS publishes a clause-level list of new documented-information requirements, so treat it as considered judgement rather than citation, and check it against your own copy before you act on it.
Public sector tendering
ISO 14001 does not satisfy PPN 006.
This is the most expensive misunderstanding in UK environmental compliance, and the revision does nothing to change it.
Procurement Policy Note 006 requires bidding suppliers to provide a Carbon Reduction Plan as a condition of participation. It applies to central government departments, their executive agencies and non-departmental public bodies, on procurements with an estimated value above five million pounds per year including VAT, advertised on or after 24 February 2025. It is the Procurement Act renumbering of what used to be PPN 06/21, and it is current.
A compliant plan states a commitment to net zero by 2050, reports current Scope 1 and Scope 2 emissions plus a defined subset of Scope 3 in carbon dioxide equivalent, describes the environmental management measures in effect, and is published and clearly signposted on the supplier's UK website, updated at least annually.
ISO 14001 appears in PPN 006 exactly once, as an example of an environmental management measure a supplier might describe inside that plan. It is not an alternative to the plan. A business holding ISO 14001 and no Carbon Reduction Plan fails the condition of participation. A business with a compliant plan and no ISO 14001 passes it.
The two are complementary, not substitutable. ISO 14001 is a management system standard: it requires a system for identifying aspects, setting objectives and improving, and it mandates no emissions target and no emissions inventory. PPN 006 requires a published, quantified inventory and a stated target. The 2026 revision broadens what must be considered in the context clauses, but consideration is not measurement, and it does not turn ISO 14001 into a carbon accounting standard.
On the wider question of whether ISO 14001 is needed to win public work: it is not mandated by any UK central government procurement policy we could find. Where it is required, it is required by an individual buyer or by a main contractor flowing it down, and that varies contract by contract. Anyone telling you it is a legal requirement for public tendering is wrong.
Practical next steps
What to do, in order.
- 1
Ask whether your certification body has its UKAS decision yet.
In writing, with the date. Until it does, any ISO 14001:2026 certificate it issues you is unaccredited. Every decision is due by 30 April 2027, so this question has a shelf life.
- 2
Put an objective in every internal audit plan.
Clause 9.2 now wants audit objectives alongside scope and criteria. It is the clearest new documented requirement in the revision and the cheapest to close: one line per audit, applied from your next one.
- 3
Decide how you evidence planning of changes.
Clause 6.3 did not exist in 2015. Of everything here it is the likeliest to need something you do not hold. Worth deciding now whether that lives in an existing change process or gets its own record.
- 4
Separate risks and opportunities from aspects in your register.
New clause 6.1.4 pulls them apart, and issues from clause 4 no longer flow straight through into risks. The filtering step has to be visible to an auditor.
- 5
Ask whether transition can ride your surveillance or recertification audit.
Four certification bodies offer standalone, surveillance-combined or recertification routes, and combining is normally cheaper. No published rule obliges any of them to, so it is a question, not an entitlement.
- 6
If you also hold ISO 9001, let 14001 set the schedule.
ISO 9001:2026 has no published transition deadline at all. This one does. Planning against the standard with real dates is the only option that does not involve waiting on a timetable nobody has written.
What this page is not
Structural facts here come from the contents pages of the published standard. Interpretation of what each change demands comes from ISO's explainer material and from certification body guidance, which is reliable but commercially motivated. Where those sources disagree, and on clause 10 and the life cycle perspective they do, we have followed the standard rather than the commentary.
Three things nobody has published, which we will not invent: what happens to a certificate not transitioned by 30 April 2029, how long a transition audit takes, and a clause-level list of new documented-information requirements. Certification bodies say 2015 certificates expire at the deadline. UKAS does not address it.
Primary sources: the UKAS technical bulletin for ISO 14001:2026 dated 22 May 2026 and its appendices, the ISO catalogue entries for ISO 14001 and its withdrawn 2015 predecessor, ISO's own revision material, the Global ACI document register, and Procurement Policy Note 006 with its guidance and technical standard. Certification body guidance is attributed in the table above.
Running 14001 and 9001 through the same transition?
Certiqa holds clause libraries per edition, so evidence stays attached to the edition it was gathered against and a transition becomes a mapping exercise rather than a rebuild.