ISO 9001:2015 transition period → 2026: timetable, audit deadlines and what to do with your current certificate

The publication of a new version of the standard does not mean that the existing ISO 9001:2015 certificate becomes invalid overnight. For years, the International Organisation for Standardisation has been using a tried-and-tested transition period mechanism, which gives organisations time to adapt their quality management system to the new requirements without the risk of suddenly losing their certification. However, it is worth understanding exactly how this mechanism works, as misinterpreting the deadlines is one of the most common reasons for unnecessary haste – or, conversely, excessive delay.

What does the transition period typically look like when an ISO standard is updated?

The history of previous revisions to the standard – including the transition from ISO 9001:2008 to ISO 9001:2015 – reveals a recurring pattern. From the moment a new version is published, certification bodies usually have a set period to train auditors and adapt their own procedures, whilst certified organisations – typically three years from the date of publication – have time to undergo an audit that complies with the new version of the standard (we outline the scope of this update in the article ‘ISO 9001 update in 2026’). After the transition period, certificates issued for compliance with the old version of the standard will automatically expire, regardless of when they were due to expire formally.

What this means in practice for your business

The key point is that you do not need to interrupt your current certification cycle or carry out an additional, extraordinary audit immediately following the publication of ISO 9001:2026. In most cases, the transition to the new version of the standard takes place during the next scheduled surveillance audit or recertification audit, provided that it falls within the timeframe set by the transition period. The certification body is obliged to inform its clients of the date from which audits will be conducted in accordance with the new requirements.

Exceptions are situations where the expiry date of the current certificate falls close to the end of the transition period – in such cases, it is advisable to schedule the recertification audit well in advance, as certification bodies typically experience a backlog of audits and extended waiting times during the final months of the transition period.

What not to do

A common mistake is deciding to completely overhaul the quality management system ‘right away’, before the certification body and the accrediting body have published the final interpretative guidelines for the new standard. This applies particularly to documentation – before you start revamping procedures on your own, it is worth checking exactly which documents the new standard actually requires.

A second mistake is to put off the matter until the very last possible moment. Transitioning to the new version of the standard is not merely an audit formality, but a genuine change to some processes and documentation – and implementing such changes takes time, particularly in organisations with multiple branches or an extensive supply chain.

Recommended action plan

It is good practice to divide the transition into three stages: first, an analysis of the gaps between the current system and the requirements of the new standard – a summary of the key differences between ISO 9001:2015 and ISO 9001:2026 will be helpful here – followed by the implementation of changes to documentation and processes well in advance of the planned audit; and finally, an internal audit to verify the system’s readiness before the certification body’s visit. Such a timetable helps to avoid both hasty decisions and time pressure in the run-up to the recertification audit.