ISO 14001:2026 Transition Deadline: Key Dates to 30 April 2029

Why does the transition end on 30 April 2029?

Because every deadline is counted from the last day of the publication month. ISO 14001:2026 was published in April 2026, so the Global ACI transition document takes 30 April 2026 as day zero and sets its deadlines in months: 6, 9, 12, 18 and 36.

The document, referenced Global ACI-TECH-3-TR 2029-04-30 (M), version 1.0, was issued on 4 September 2026 and has applied since 14 September 2026. Global ACI (Global Accreditation Cooperation Incorporated) has taken over the work of the International Accreditation Forum (IAF). Its transition document is mandatory for the accreditation bodies that have signed the Global ACI multilateral recognition arrangement and for the certification bodies they accredit.

The ISO page for the standard dates its publication 15 April 2026, the day the 2015 edition was withdrawn. For your own schedule, the exact day has no effect: day zero remains 30 April 2026. Global ACI justifies the three years by the size of the certified population: around 700,000 accredited ISO 14001 certificates worldwide.

What are the key dates, step by step?

Six dates frame the transition. The first three concern accreditation and certification bodies above all; the last three directly affect certified companies.

The first deadline has already passed. If your certification body has told you nothing, write to it: Global ACI requires it to communicate actively with its certified clients on the transition process, the actions expected and the timelines.

What must your certification body do, and what should you ask it?

It must prepare its own transition before it can audit yours. Global ACI requires each certification body to draw up a transition plan that identifies the changes between the two editions and their effect on its own processes: sales and quoting, the audit process, competence management, communication with clients. The people concerned must be trained: sales staff, auditors, technical reviewers, decision makers, and application and contract reviewers.

In its readiness declaration, the body commits in particular to issue accredited certificates to the 2026 edition only after its accreditation body’s decision, and to withdraw in time the certificates of clients who do not transition.

One practical detail: after the transition decision, at least one witness assessment carried out by the accreditation body must be an ISO 14001:2026 audit before 30 April 2029. Your audit could be that one, with an assessor from the accreditation body also in the room.

The questions to put to your certification body in writing:

• Has its accreditation moved to ISO 14001:2026, and on what date?
  
• In what format, and on what date, does it plan your transition audit?
  
• Does it plan additional audit time, and on what justification?
  
• Will it accept part of the audit remotely?
  
• Can it combine the transition with the ISO 9001:2026 transition?
  

When should you schedule your transition audit?

As early as possible after your certification body has transitioned, on an audit that is already planned. Global ACI allows three formats: surveillance, recertification or a special transition audit. The audit can be held remotely under IAF MD 4 (now Global ACI TECH-3-003) if the certification body demonstrates that its objectives are met. At a minimum, it reviews the changed requirements, changes in your context and the need for any other changes to your system. What has changed is explained in our guide to ISO 14001:2026 changes.

The decisive words are “including certificate issuance”: before 30 April 2029, you must have been audited, closed any nonconformities and received the certification decision. Count backwards from your current cycle:

• Recertification due in early 2027, before your certification body’s accreditation has transitioned. The recertification will be to the 2015 edition; the transition will then take place at a 2028 surveillance audit or at a special audit.
• Recertification due between mid-2027 and the end of 2028. This is the natural opportunity: a full system audit, for which Global ACI notes that additional time may not be needed.
• Recertification due after April 2029. Your last audit before the deadline will be a surveillance audit: you need to transition at a 2027 or 2028 surveillance, or schedule a special audit.
• Transition left to a surveillance audit in early 2029. The scenario to avoid: a major nonconformity to close in a few weeks, and a certificate that may lapse on 30 April.

How these choices affect audit days is covered in our article on ISO 14001 certification cost and duration.

How do you align the ISO 14001 transition with ISO 9001:2026?

By working to the environmental date, which comes first. ISO 9001:2026, published on 16 September 2026, follows the same mechanism, five months later, under the Global ACI document for the quality standard.

For a combined audit of both transitions, the useful window opens once your certification body has completed both accreditation transitions, by 30 September 2027 at the latest, and closes on 30 April 2029. The quality timeline is detailed in our article on the ISO 9001:2026 transition deadline of 30 September 2029, and the integration method on our integrated QHSE management system page.

What does a site risk if it misses the deadline?

Its certificate stops being valid on 30 April 2029, even if the printed expiry date is later. Global ACI does not require certification bodies to modify existing ISO 14001:2015 certificates, but allows them to shorten their validity to avoid confusion in the market.

A company that declares it does not want to move to the 2026 edition can still be audited against the 2015 edition, but its certification body must inform it that its certification will expire at the end of the transition. For an exporter, the consequence is commercial: a European buyer who requires a valid certificate will no longer find yours. The Global ACI document does not set the conditions for restoring an expired certification: they fall under your certification body’s own rules, so ask for them in writing before the deadline.

If you buy from ISO 14001 certified suppliers in Morocco or elsewhere in Africa, ask each of them when and in which format its transition audit is planned: a 2015 certificate showing an expiry date after April 2029 will not be valid beyond 30 April 2029.

Your actions, date by date:

• Now: buy the standard and start the gap analysis on the changes, the context and climate change.
  
• By 31 January 2027: get a written position from your certification body on its transition.
  
• During 2027: choose the format of your transition audit and have it written into your certification cycle.
  
• Before the audit: train the internal auditors, hold an internal audit and a management review against the 2026 edition.
  
• After the audit: close nonconformities early enough for the certificate to be issued well before 30 April 2029.