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European standard guide Management systems

EN ISO 9001

EN ISO 9001 – Quality Management Systems

EN ISO 9001 sets requirements for a quality management system. Organizations use it to define and control processes, evaluate performance, address risks and improve their ability to meet customer and applicable requirements. This guide explains the standard’s purpose, implementation considerations and certification context.

Editorial guide Content updated 27 September 2026
On this page
  1. What is the difference between ISO 9001 and EN ISO 9001?
  2. A practical quality management checklist
  3. Who can use ISO 9001?
  4. How to prepare for certification
  5. Moving from ISO 9001:2015 to the 2026 edition
  6. Find the right document
  7. Frequently asked questions

Edition update, 26 September 2026: ISO published ISO 9001:2026 on 16 September 2026. Check the exact European or national adoption, language and amendments in the publisher's catalogue before selecting a document.

What is the difference between ISO 9001 and EN ISO 9001?

ISO develops the international standard; the EN designation indicates European adoption. A national prefix identifies its national publication. Match the complete reference and edition to your contract or certification arrangements. An EN prefix alone does not establish that a standard is harmonised under a particular EU law, and a QMS certificate is not a product approval or CE marking certificate.

A practical quality management checklist

Use this planning checklist alongside the applicable standard, rather than as a substitute for its requirements.

Work areaWhat to establishUseful evidence
Scope and responsibilitiesWhich activities, locations and processes the QMS coversScope statement, process owners and responsibilities
Planning and operationCustomer requirements, relevant risks, resources and process controlsObjectives, supplier controls and operational records
EvaluationHow the organisation checks whether processes workPerformance measures, internal audits and management reviews
ImprovementHow problems are corrected and recurrence addressedCorrective actions and evidence of their effectiveness

Who can use ISO 9001?

Organisations of different sizes and sectors can use the framework, including service providers, manufacturers and public bodies. Decide whether certification supports a real customer, procurement or business need. It does not replace sector-specific obligations or demonstrate that every individual product is safe.

How to prepare for certification

  1. Agree the intended certification scope and applicable edition with a certification body.
  2. Compare existing processes with the requirements and assign owners to any gaps.
  3. Implement the changes and collect evidence from normal operations.
  4. Complete internal audits and management review, then address findings.
  5. Arrange the external assessment and agree the continuing audit programme.

ISO does not issue certificates. An independent certification body assesses the organisation. When comparing providers, check its accreditation, relevant scope and the certificate details. Request a quotation based on your sites, activities and workforce; there is no universal certification price.

Before requesting a quotation, use our ISO 9001 provider selection guide to distinguish implementation consultants, internal auditors and certification bodies. Then describe the ISO support you need.

Moving from ISO 9001:2015 to the 2026 edition

The new edition places additional emphasis on leadership, quality culture and clearer treatment of risks and opportunities. Start with a documented gap review rather than replacing your entire management system.

The ISO/TC 176 transition guidance published on 23 September 2026 gives 30 September 2029 for organisations certified to ISO 9001:2015 to complete transition. It states that new and initial accredited certifications move exclusively to the 2026 edition from 31 March 2028. Confirm your own audit schedule and certificate conditions with your certification body; publication of the new edition does not by itself cancel an existing certificate.

Find the right document

Check the ISO 9001 catalogue record for international edition status. You can also search the Genorma catalogue for EN ISO 9001. Confirm the edition, adoption, language, licence and current price with the supplier. Purchasing the document does not provide certification.

Frequently asked questions

Is ISO 9001 certification compulsory?

It is generally voluntary. Check the specific contract, tender and applicable sector requirements instead of assuming every EU business needs it.

Can an organisation use ISO 9001 without certification?

Yes. It can apply the management approach without seeking an external certificate.

Does a certificate cover every site and product?

Read the certificate's stated organisation, sites, activities, edition and validity. Do not infer coverage beyond its scope.

From reading to action

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