The CE Certification Process, Step by Step

In this Knowledge Center series we have covered many parts of the process separately, from the concept of the CE mark to the technical file, from the notified body to audits. In this article, we bring all these pieces together as a single whole, as a chronological roadmap from start to finish. Our goal is to clearly lay out every step of the process a product goes through, from the initial idea stage to being ready for the European market: what needs to be done, when, and by whom. Whether you are a machinery manufacturer, an importer, a quality manager or an R&D engineer, you can use this guide as a checklist for your own product's CE journey.

Why Is the CE Process a Management System, Not a Single Step?

CE marking is often perceived as merely the final step of the process: "We've finished the product, now let's get CE." In reality, however, the CE mark is the natural result of a long engineering and documentation chain that begins at the design stage. Leaving the process to the end is usually the most costly mistake, because a non-conformity identified after the design is complete may require the product to be redesigned. For this reason, the CE process needs to be structured not as a "document collection" task, but as a management system running in parallel with the product development process.

The Three Main Phases of the Process

The CE certification process can be grouped into three main phases. The analysis phase is where the product's scope, applicable directives, standards and risks are determined, and the accuracy of the rest of the process depends largely on getting this phase right. The documentation and verification phase — where the risk analysis, technical file, tests and, if needed, the notified body process are carried out — is the longest and most technical part of the process. The marking and sustainability phase covers signing the declaration of conformity, affixing the CE mark, and the record-keeping and audit-readiness obligations that must be maintained while the product is on the market.

How Long Does the Process Take, and What Factors Affect the Duration?

Giving a single general figure for the duration of the CE certification process would be misleading, because the duration varies significantly depending on the product's risk class, the maturity of the existing technical documentation, the need for testing, and whether notified body involvement is required. A low-risk product that proceeds via self-declaration and already has a mature design can be completed in a relatively short time, while a high-risk product requiring notified body involvement and designed from scratch requires a much longer process. Among the factors that extend the timeline the most are laboratory appointment waiting times, design revisions arising after testing, and review periods stemming from the notified body's own workload. For this reason, realistic time planning at the start of the process is critical both for managing internal stakeholders' expectations and for accurately forecasting the market entry date.

Choosing an Organizational Model for Managing the Process

Companies generally manage the CE process with one of three organizational models. In the fully in-house model, the company's own engineering and quality team carries out all the steps itself; this model can provide a cost advantage for large companies with a continuous and high-volume CE process, but carries risk in steps that require expertise (for example, interpreting legislation, tracking standards). In the fully outsourced model, the entire process is handed over to a consultancy firm; this model provides a speed and expertise advantage for small and medium-sized companies. The third and most commonly chosen model is the hybrid approach: the company keeps its own product knowledge and design decisions in-house while getting consultancy support for steps that require expertise, such as legislative analysis, documentation structure and process coordination. Whichever model is chosen, it is recommended that a single coordination point be designated so that no information is lost between the different steps of the process.

Budget and Resource Planning in the CE Process

The cost of the CE process consists of different line items such as laboratory tests, notified body fees (if required), consultancy support and possible design revisions. Failing to realistically forecast this cost at the start of the process is one of the most common causes of budget overruns and lost time in the middle of a project. Experienced companies, when doing budget planning, account not only for the "definitely necessary" costs but also set aside a contingency margin for the possibility of revisions that may arise after testing. Resource planning is not limited to the financial dimension alone; clarifying how much time each internal team member (engineering, quality, procurement) will devote at different steps of the process also ensures the process proceeds on the planned schedule. For more detailed information on the factors affecting cost, see our article What Determines the Cost of CE Certification?.

Relevant Directives and Standards

Which directives and regulations the CE process covers depends entirely on the nature of the product; however, the most commonly encountered legislative headings are: Machinery Directive 2006/42/EC for mechanical equipment (being gradually replaced from 20 January 2027 by Machinery Regulation (EU) 2023/1230), Low Voltage Directive 2014/35/EU for electrical products, Radio Equipment Directive 2014/53/EU for wireless communication devices, and RoHS Directive 2011/65/EU for restrictions on hazardous substances in electronic equipment. The common legal framework of these directives is formed by Decision No 768/2008/EC, which standardizes conformity assessment modules, and Regulation (EC) No 765/2008, which sets out the general rules for market surveillance and CE marking (with Regulation (EU) 2019/1020 for the current market surveillance provisions). Concrete technical requirements are set out in product-specific harmonized EN standards.

The CE Certification Process, Step by Step

1. Clarifying the product and market definition. The first step of the process is to clarify the product's technical description, intended use, energy source, target user profile, and which markets (EU, Türkiye, third countries) it will be offered in. This definition forms the reference point for all subsequent steps; ambiguity introduced at the definition stage can lead to the wrong directive or standard being selected later on.
2. Identifying the applicable directives and regulations. Based on the product's functional characteristics, which EU directives and regulations it falls within the scope of is determined; most products are simultaneously subject to more than one piece of legislation. We covered how this step is carried out in detail in our article Which Directives Apply to My Product?; an incorrect directive determination can require the technical file to be largely restructured.
3. Determining whether the product is finished machinery or partly completed machinery. This distinction is critical especially for equipment designed to be integrated into another machine, because for partly completed machinery, a declaration of incorporation process applies instead of CE marking. See our article What Is Partly Completed Machinery? for details; skipping this step creates the risk of a CE mark being mistakenly affixed to the equipment.
4. Determining the harmonized standards. The current harmonized EN standards, published in the Official Journal, corresponding to the applicable directives are identified. The choice of standard directly determines both the design criteria and the scope of the subsequent test phase; the currency of the standard should be checked periodically, because harmonized standard lists are updated over time.
5. Carrying out the risk analysis. The mechanical, electrical, thermal and other hazards the product may encounter over its service life are systematically identified; a mitigation measure is determined for each hazard and residual risks are documented. The risk analysis becomes the fundamental reference document for the test scope and design decisions at later stages of the process.
6. Reviewing the design. In light of the risk analysis and standard requirements, the product design is reviewed; safety devices, material choices or electronic design are revised if necessary. The earlier deficiencies identified at this step are resolved, the less cost arises at later steps; for this reason, design review should be completed, if possible, at the prototype stage and before moving to mass production.
7. Determining and planning the need for testing. It is clarified which essential requirements will be proven through laboratory testing and which through calculation or analysis. You can find the detailed assessment criteria on this topic in our article When Are Tests Required in the CE Process?; correct planning at this step ensures laboratory waiting times are integrated into the project schedule early.
8. Carrying out laboratory testing. Required tests such as electrical safety, radio frequency performance and mechanical safety are carried out at an accredited laboratory and the results are documented with test reports. If a test result is non-conforming, the process returns to the design review step for a targeted revision.
9. Deciding between self-declaration and notified body involvement. Depending on the product's risk class, it is determined whether to proceed with the manufacturer's own declaration or with the involvement of an independent notified body. See our article What Is a Notified Body? for the importance of this distinction; clarifying this decision through a preliminary assessment as early as possible in the process prevents surprise delays.
10. Compiling the technical file. Design drawings, calculations, risk analysis, test reports and all relevant technical evidence are gathered under a single file. See our articles What Is the CE Technical File? and How Is the Technical File Prepared? for the scope and preparation of the technical file; the technical file is the central document that brings together the outputs of all previous steps.
11. Preparing the user manual. The manual, containing information on the product's safe installation, use, maintenance and decommissioning, is prepared in the language of the target market and with the minimum content elements required by legislation. The content of the manual must be consistent with the residual risks identified in the risk analysis and with the warning labels.
12. Preparing the EU Declaration of Conformity. The official document declaring that the product complies with all relevant directives and standards is prepared with all required elements and signed by an authorized signatory. See our article How Is the EU Declaration of Conformity Prepared? for the content of the declaration; the declaration must be exactly consistent with the information in the technical file.
13. Affixing the CE mark to the product. The CE mark is affixed to the product or its label in accordance with the dimension and proportion rules prescribed by legislation; all previous steps must be fully completed before this step. Early or incomplete CE marking is one of the most common types of non-conformity encountered.
14. Institutionalizing the manufacturer's ongoing legal responsibilities. Keeping the technical file and declaration for the prescribed period (usually 10 years), and tying the tracking of complaints and non-conformities to an internal procedure, is institutionalized at this step. See our article What Are a Machine Manufacturer's Legal Responsibilities? for comprehensive information; this step ensures the process is not "done once and forgotten," but a continuously managed structure.
15. Managing market placement and customs processes. The product is placed on the market together with the required documents; if import is involved, preparation is made for document and label checks at customs. See our article Can a Product Be Sold Without CE Certification? for the risks that can arise from a missing CE mark; at this stage it is recommended that digital and physical copies of the documents be kept ready together with the shipment.
16. Being ready for market surveillance and audits. CE marking is not the end of the process but the beginning of post-market responsibility; the manufacturer must keep its file continuously up to date so it can present documents quickly and completely during a possible audit. We explained in detail what is examined during audits in our article What Do CE Audits Look At?; this last step actually closes a loop together with the first step of the process, because every finding that emerges during an audit should also feed back into future product development decisions.

Most Common Mistakes

• Viewing the CE process as a separate "paperwork task" to be started only after the product design is complete.
• Identifying the directive and standard superficially and being forced into a from-scratch revision later in the process.
• Carrying out the risk analysis as a step disconnected from testing or technical file preparation.
• Not clarifying the self-declaration/notified body decision at the very start rather than in the middle of the process.
• Leaving the user manual to the last minute and not preparing it completely in the language of the target market.
• Affixing the CE mark to the product before the declaration of conformity and technical file are complete.
• Neglecting record-keeping and audit-readiness responsibilities after the product is placed on the market.
• Distributing different steps of the process to different, uncoordinated suppliers and losing overall consistency.

Frequently Asked Questions

Conclusion

The CE certification process is not a sum of independent tasks, but an engineering and documentation chain in which every step depends on the accuracy of the one before it, and which must be carried out consistently from start to finish. A scope or standard error made at the start of the process can produce far more costly consequences than a testing or marking error at the end. For this reason, managing the CE process as an inseparable part of product development, planned and coordinated from the very beginning, both reduces legal risks and ensures your product confidently enters the European market.