Ask the Experts: What is Involved in a Certification Audit?

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1 September 2025

Certification audits are essential for companies to demonstrate their compliance, credibility, and continual improvement against recognized standards.

This can be a daunting prospect, and the mere thought of an audit can be enough to discourage businesses from seeking certification altogether. However, by preparing the right information and involving the right people, you can avoid the headache, strengthen your policies and procedures, and show your commitment to quality and continuous improvement.

For this insight, we invited three Control Union auditors for a roundtable discussion about the certification process and to best prepare for an audit. The participants are:

  • Peio Bachelet, Control Union France, Auditor for Bio energies, Carbon, and Agriculture
  • Rohitha Wickramasinghe, Control Union Sri Lanka, Auditor
  • Asiri Perera, Control Union Gulf Auditor for BRCGS, FSSC 22000, ISO 22000, 9001, 45001, GMP+FSA, HACCP, and sustainable tourism standards

What is the certification audit process?

Rohitha: “Firstly, we would arrange your audit date and a proposed audit plan. Advanced notice is normally around 2-4 weeks.”

Asiri: “However, surveillance or unannounced audits may also occur based on the certification scheme requirement.”

Peio: “In the scenario of a pre-arranged audit, the proposed audit plan enables you to consolidate all the necessary elements and involve the relevant operators within your business.”

Rohitha: “The audit itself is split into 2 stages, and takes around 1-3 days to complete, depending on the size of the company, number of sites, FTE, and certification scope. Stage 1 audits the adequacy of documented information and readiness for certification. If you are successful in this stage, 2-3 weeks later, you will undergo a Stage 2 Audit. At this stage, we would review your documentation, inspect your site, and interview your staff. If you are successful, you’ll receive a recommendation for certification. If not, we arrange a follow-up audit with you to allow you to make the necessary changes.”

Asiri: “The report from a successful audit, where certification is granted or maintained, may contain observations or minor non-conformities that require correction. However, an unsuccessful audit report will list critical major non-conformities, which you must address before a follow-up audit. It’s worth noting that some standards don’t allow for a follow-up audit within 6 months of the initial audit.”

 

Who needs to be involved from the client side to ensure a swift certification audit? 

Peio: “Every operator involved in any part of the standard should participate in the audit. Generally, quality personnel are responsible for implementing certification systems, but support from commercial, operational, and management departments will always be beneficial to the smooth running of a constructive audit.”

Asiri: “That means top management, your compliance manager, and department heads should be getting involved.”

Rohitha: “Plus, some businesses have a scheme manager. For example, for a Quality Management System (QMS), this may be the Quality Head/Manager. For Information Security Management Systems (ISMS) or Privacy Information Management System (PIMS), this could be the Technical Manager.”

Asiri: “Whoever takes on the responsibility for the audit, they’ll need around 4-8 weeks of preparation time ahead of the audit. The actual timeframe will heavily depend on the complexity of the certification and the organization’s size, but you must allow sufficient time for internal reviews; staff briefing and training; and document preparation.

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What types of documents need to be prepared for a certification audit?

Asiri: “It depends on the certification program. Different schemes require different types of documented information. However, there are a few common ones, including:

  • Policies
  • Procedures
  • Standard operating procedures (SOP)
  • Training records
  • Monitoring data
  • Risk assessments
  • Legal compliance (such as legal licenses, business registration, trade license, labour law requirements)
  • Supplier control and purchasing records
  • Internal management meeting minutes
  • Internal audit results
  • Communication plans and records
  • Previous audit reports and corrective actions plans
  • Internal manuals.”

Rohitha: “To give a specific example, if you are being audited for a management system certification, you’ll need your business registration and applicable license; policy related to the certification scheme; process mapping/interactions and controls; business context analysis; stakeholder evaluations and risk/opportunity analysis; process/management objectives; scheme specific documents (e.g. an aspect/impact analysis for ISO 14001, hazard identification for ISO 45001); responsibility matrix; competency development; operational process information; internal audit documentation; management reviews; customer feedback; and improvement related evidence.”

Peio: “This can feel like a lot of information to pull together. However, when it comes to preparing for an audit, it is best to keep the system up-to-date throughout the year to avoid being overwhelmed when preparing for the external audit. Cross-internal audit systems (sometimes required depending on the certification) can help reduce the time needed to prepare for the audit.”

Peio: “It’s also worth bearing in mind that, usually, all evidence must be available on the day of the audit. However, depending on the scheme, certain documents (e.g. traceability, greenhouse gas calculations) must be submitted in advance to enable the auditor to prepare for the audit properly.”

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With certification criteria continually changing, how much do clients need to be up to speed on the latest developments?

Peio: “Keeping up to date with changes to your standard is essential for the smooth running of the audit and the maintenance of certification. Active monitoring of regulatory developments on the websites of standard owners, social media, and professional organisations generally ensures that you are always up to date with changes to the standards.”

Asiri: “Absolutely. Lack of awareness not only slows down the audit but may also result in non-conformities. Attending training sessions and webinars is a great way to stay up-to-date. Alternatively, you can engage with a third-party consultant who is well-versed in your certification scheme.”

Rohitha: “You must also have up-to-date process analysis matching with the latest business context. Plus, you should be addressing management and other stakeholders’ needs and expectations to demonstrate your continual improvement – the lynchpin of many certification schemes.”

In conclusion, a certification audit can be a challenging undertaking. It takes a significant amount of time, communication, and engagement to ensure everything is in order. However, the best advice we can give to prepare for a certification audit goes to the heart of many certification systems – continual improvement.

Rather than leaving your document compiling and preparations to the last minute, taking small, consistent steps each day to maintain your systems will not only make the audit process smoother but will also lead to greater efficiency and ongoing compliance in the long term.

Learn more at our dedicated Auditing Service Page.

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Are you looking for a certain service, do you have any questions or do you want to apply for the certification program? Let us know. We’re glad to be of help.