ISO 9001:2026 Transition Audit Timing by Certificate Cycle

"When is our transition audit, actually?" A QMS owner asked me this in a planning meeting last week. Her certification body had sent a generic letter. Her management team wanted one date for the budget. Her metrology lead wanted to know how long he had to get roughly 900 gauge records into a state he would defend in front of an auditor. Nobody in the room could answer, because the answer depends on something nobody had looked at: where the site sits in its three-year certificate cycle.

That is the subject of this article. The question is not whether you transition to ISO 9001:2026; you will. It is which of your audits becomes the transition audit, and therefore which window of calibration records will be the first measured against the new text.

What is verified, and what is not

Here are the facts first, from the primary source. ISO 9001:2026 was published on 16 September 2026. The transition rules are in Global ACI document TECH-3-TR, "Transition Requirements for ISO 9001:2026", implemented the same day. Global ACI is the body formed from IAF and ILAC. That document sets a three-year transition. Its milestones count from the end of the publication month:

| Date | Milestone (Global ACI TECH-3-TR) |
|—|—|
| 31 Mar 2027 | Accreditation bodies ready to assess to ISO 9001:2026 |
| 30 Jun 2027 | Certification bodies submit their transition declaration; CBs that will not transition must have told clients in writing |
| 30 Sep 2027 | Accreditation-body transition decisions completed |
| 31 Mar 2028 | No new or initial certifications to ISO 9001:2015 after this date |
| 30 Sep 2029 | End of transition; accredited 2015 certificates no longer valid |

The document also says the transition audit can run with a surveillance audit, with a recertification audit, or as a separate special audit. It may be carried out remotely under IAF MD 4. The certification body considers extra audit time under IAF MD 5, and the document notes that additional time "may not be needed for a full system audit."

Three things are not settled by that document, and you need to confirm them with your own certification body:

• When your CB will actually be able to issue accredited ISO 9001:2026 certificates. The milestones above suggest this will vary between CBs through 2027. That is my reading of the dates, not something the document states.
• Whether a 2015 recertification is still possible after 31 March 2028. The cutoff covers new and initial certifications. Ask how your CB treats a recertification.
• How your CB will set the expiry date of any certificate it issues to the 2015 text during the transition.

Three certificate cycles, three different answers

A standard cycle runs certification or recertification in year 0, surveillance audits in years 1 and 2, and recertification before expiry in year 3. Lay that grid over the milestones and you get three typical positions. All dates below are illustrative.

Cycle A: your recertification falls in 2027

Say your certificate expires in May 2027, so the recertification audit runs around March. At that point your CB may well not yet hold accreditation for the 2026 text. The likely path is a 2015 recertification now, then a transition at the first surveillance in spring 2028 or at a special audit. If your recertification falls late in 2027, after the 30 September 2027 accreditation decisions, combining it with the transition becomes realistic.

Implication for 7.1.5: the first audit against the 2026 text is a surveillance audit, which samples rather than covers the whole system. Your calibration records from roughly spring 2027 to spring 2028 are the ones in play.

Cycle B: your recertification falls in 2028

This is the most comfortable position. You can transition at a 2027 surveillance if your CB is ready, or at the 2028 recertification, which is a full system audit. Most organisations here will choose the recertification. Global ACI’s own note on extra time suggests the transition content folds into the full audit.

Implication for 7.1.5: a recertification looks back over the whole cycle. Expect the auditor to sample calibration records and recall performance from the full three years, not only the last twelve months.

Cycle C: your recertification falls in late 2029 or after

Suppose your certificate expires in November 2029. A recertification in, say, October 2029 is after 30 September 2029, so it is too late: your 2015 certificate is no longer valid by then. You must transition at the 2027 or 2028 surveillance, or at a special audit before the deadline. A recertification in early 2029 is technically possible. But it leaves almost no time to close a major nonconformity before the certification decision, and your CB’s normal rules on closing nonconformities still apply.

Implication for 7.1.5: you are likely to meet the 2026 text at a surveillance audit in 2027 or 2028. The evidence window opens sooner than most people in this position assume.

The evidence window opens one calibration interval before the audit

This is the part the timing question usually hides. An auditor sampling under 7.1.5.1 and 7.1.5.2 does not assess the records you clean up the week before. They pick instruments from the floor, such as the thread plug gauges at Line 4, and ask for:

• the calibration that covered the period those gauges were in use;
• the as-found result;
• traceability on the certificate;
• what you did when something failed.

For a gauge on a 12-month interval sampled at a November 2027 audit, the relevant record was created between November 2026 and November 2027. For a 24-month interval, the certificate in your binder today may be the one the auditor reads.

So the working rule is:

Clean-record start date = transition audit date − the longest calibration interval among the instruments likely to be sampled.

Applied to the three cycles:

| Cycle | Likely transition audit | Longest interval | Records in scope from |
|—|—|—|—|
| A | Surveillance, spring 2028 | 12 months | Spring 2027 |
| B | Recertification, mid-2028 | 24 months | Mid-2026, i.e. now (and a recertification may look further back) |
| C | Surveillance, autumn 2027 | 12 months | Autumn 2026, i.e. now |

For two of the three cycles, the records that will first face the 2026 text are being written this quarter. Gaps found later, such as a missing as-found value, a certificate with no traceability statement, or an instrument used while overdue, cannot be fixed afterwards. They can only be explained.

"But 7.1.5 didn’t change"

This is the objection I hear most, and it is half right. Clause 7.1.5 does not appear in Global ACI’s summary of key changes. The document describes the overall changes as "minimal". If you have read your purchased copy and the measuring-resources wording matches 2015, say so in your gap analysis. "No change" is a legitimate finding.

That still does not take calibration out of the transition audit, for three reasons:

1. The key-changes list is explicitly "not limited to". Its absence from the list is not proof the text is word-for-word identical. Global ACI also lists a new phrase for documented information. Check how it reads in your copy of 7.1.5. I have not verified the 2026 wording of that clause, and you should not take anyone’s summary, including this one, as a substitute for the text.
2. The transition audit is still an audit. Combined with surveillance, it samples whatever the audit plan covers. Combined with recertification, it covers the whole system. Measuring equipment is one of the most consistently sampled areas, because the evidence is concrete and quick to test.
3. A nonconformity at the transition audit lands on the critical path. A 7.1.5 finding at an ordinary surveillance is a corrective action. At a Cycle C transition in 2029, it sits between you and a valid certificate.

The accurate framing is this. The requirement may be essentially unchanged. The stakes of the audit that tests it are not.

Worksheet: fix your date, then your window

Take this to your next CB call and to your metrology lead:

• [ ] Certificate expiry date, and the dates of the remaining surveillance and recertification audits in the cycle.
• [ ] CB’s expected date for accredited ISO 9001:2026 audits (ask; do not infer).
• [ ] Which audit the CB proposes as the transition audit: surveillance, recertification or special.
• [ ] Whether it will be on-site or remote under IAF MD 4. Remote sampling needs records you can retrieve quickly on screen.
• [ ] Extra audit time proposed under IAF MD 5.
• [ ] Longest calibration interval among the instruments on product-critical characteristics.
• [ ] Clean-record start date (audit date minus that interval). Mark it in the quality calendar.
• [ ] From that date: every calibration has an as-found result, an as-left result, a certificate with traceability, and an out-of-tolerance (OOT) impact assessment wherever as-found failed.
• [ ] From that date: no instrument is issued while overdue, or each exception is recorded and justified.
• [ ] If you are in IATF 16949: its second edition is planned for mid-2027 with indicative dates, and its transition end will align with ISO 9001’s. Ask whether one audit can cover both.

Where PrüfDesk fits, and where it doesn’t

PrüfDesk covers the records layer behind that worksheet:

• an instrument register with auto-calculated due dates, so you can list exactly which calibrations fall inside your evidence window;
• pass/fail records with as-found and as-left values and the attached certificate;
• reusable procedure templates that you can override per unit;
• configurable overdue blocking, as a hard block or a soft warning, plus a check-out and possession audit trail showing who held a gauge while it was due;
• audit-ready PDF reports for the period the auditor asks about, including on a screen-share.

It does not:

• tell you when your transition audit is (your CB does);
• write your gap analysis or quality manual;
• run calibrations for you;
• certify you.

Plans are priced by instrument count with unlimited users: Starter €49/month (250 assets), Professional €129/month (1,000 assets), Enterprise €299/month (unlimited assets).

If your clean-record start date turned out to be this quarter, talk to us about your 7.1.5 evidence. We will go through your instrument count and interval mix with you, and you can decide whether the records layer is the problem worth solving now.