CE Marking Process: Step-by-Step Guide for Manufacturers (2026)

What Is CE Marking and Why Does It Matter?

The CE mark (Conformité Européenne) is a mandatory conformity marking for products sold within the European Economic Area (EEA). It signals that the product has been assessed against EU legislation covering safety, health, and environmental requirements.

CE marking is not a quality mark — it is a legal requirement for a defined list of product categories. Without it, a product cannot legally be placed on the EU market. It is also recognised in several non-EU countries that have adopted EU technical regulations (e.g. Turkey, Switzerland under MRA agreements).

The CE mark covers more than 20 product sectors, from toys and machinery to medical devices and construction products. The specific requirements depend entirely on which EU directive or regulation applies to your product.

Step 1: Identify the Applicable Directive(s)

The first and most important step is determining which EU legislation applies to your product. A single product can fall under multiple directives simultaneously — for example, a powered medical device may need to comply with both MDR and the Low Voltage Directive (LVD).

Product Category	Applicable Legislation	NB Required?
Medical devices (non-IVD)	MDR 2017/745	Class IIa, IIb, III: Yes
In vitro diagnostic devices	IVDR 2017/746	Class B, C, D: Yes
Machinery	Machinery Regulation 2023/1230	Annex I categories: Yes
Radio equipment / wireless	RED 2014/53/EU	Generally: No
Low voltage electrical equipment	LVD 2014/35/EU	No (self-declaration)
Personal protective equipment	PPE Regulation 2016/425	Cat. II and III: Yes
Pressure equipment	PED 2014/68/EU	Cat. II–IV: Yes
Construction products	CPR 305/2011	Depends on AVCP system
Toys	Toy Safety Directive 2009/48/EC	No (self-declaration)
Electromagnetic compatibility	EMC Directive 2014/30/EU	No (self-declaration)

Step 2: Determine the Conformity Assessment Route

Once you know which directive applies, you need to identify the conformity assessment module — essentially the procedure you must follow to demonstrate compliance. There are several modules (Module A through Module H), each with different requirements:

• Module A (Internal production control) — Self-declaration, no third party involved. Used for low-risk products under many directives.
• Module B + C/D/E/F — Type examination by a Notified Body, plus ongoing conformity assessment of production.
• Module G — Unit verification by a Notified Body. Used for complex, unique, or high-risk items.
• Module H (Full quality assurance) — Full QMS audit by a Notified Body. Common for higher-risk medical devices.

The applicable module or combination is specified in the directive itself. Some directives allow you to choose between multiple routes; others mandate a specific path based on product risk class.

Step 3: Apply Harmonised Standards

Harmonised standards are European standards (EN standards) whose references have been published in the Official Journal of the EU. When you design and test your product to a harmonised standard, you gain presumption of conformity — meaning you are presumed to meet the relevant essential requirements of the applicable directive.

Using harmonised standards is not mandatory, but it is strongly recommended. Without them, you must demonstrate conformity through alternative means, which is significantly more work and harder to defend during a market surveillance inspection.

Finding the correct harmonised standards for your product type requires good regulatory knowledge. Standards bodies like CEN, CENELEC and ETSI publish the European standards, and the EU publishes the official list of harmonised standards in the OJ.

Step 4: Build the Technical Documentation

Technical documentation (sometimes called the technical file) is the core of your CE marking evidence package. It must demonstrate that your product meets all applicable essential requirements or general safety and performance requirements.

A typical technical file includes:

• General description of the product and its intended purpose
• Design specifications, drawings, and schematics
• List of applicable harmonised standards
• Risk assessment or risk management file (e.g. ISO 14971 for medical devices)
• Test reports (from accredited laboratories where required)
• Instructions for use (IFU) and labelling
• Post-market surveillance plan (where required)
• Declaration of Conformity

The technical file must be available to market surveillance authorities for at least 10 years after the last product is placed on the market (15 years for implantable medical devices).

Step 5: Testing by an Accredited Laboratory (Where Required)

Many products require testing by an accredited test laboratory to verify performance against harmonised standards. Examples include EMC testing (required for most electrical products), electrical safety testing (LVD), and biocompatibility testing (medical devices).

The laboratory must be accredited for the specific test methods required. In some cases (e.g. certain EMC tests for radio equipment under RED), test results from non-accredited labs may be acceptable for self-declaration, but this should be verified carefully.

Selecting the right lab matters for both technical coverage and timeline. Labs with heavy workloads can create significant delays — and not every lab covers every product type or standard.

Step 6: Notified Body Assessment (Where Required)

If your product requires third-party assessment, you must engage a Notified Body (NB) — an organisation designated by an EU member state to assess product conformity. Notified Bodies are listed in the NANDO database maintained by the European Commission.

Selecting the right Notified Body involves several factors:

• Scope of designation — The NB must be designated for your specific directive and product code
• Capacity and backlog — Some NBs have multi-year waiting lists for certain product types
• Geographic presence — Some NBs have stronger expertise in specific markets or product domains
• Communication and process — Responsiveness and clarity of feedback significantly affects project timelines

Step 7: Issue the EU Declaration of Conformity

The EU Declaration of Conformity (DoC) is the formal document in which you, as the manufacturer, declare that your product meets all applicable EU legislation. It is a legal document that you sign under your sole responsibility.

The DoC must include:

• Name and address of the manufacturer (and EU AR, if applicable)
• Product identification (model, type, serial/batch number if applicable)
• Reference to all applicable directives/regulations
• Reference to harmonised standards applied
• Reference to Notified Body (name, number, certificate number) where applicable
• Signature of the authorised person

Step 8: Apply the CE Mark

Once you have completed the conformity assessment procedure and issued the DoC, you can affix the CE mark to your product and/or its packaging. The CE mark must conform to the graphical requirements specified in the relevant directive (minimum height 5mm, correct proportions).

Where a Notified Body was involved in the production control phase (Modules C, D, E, F, H), the NB identification number must appear alongside the CE mark.

Typical Timelines and Costs

CE marking timelines and costs vary widely by product category, risk level, and starting point (existing data vs. new development):

• Simple low-risk products (self-declaration): 3–6 months, €5,000–€20,000
• Machinery with NB involvement: 6–12 months, €20,000–€60,000
• Class IIa medical devices: 8–18 months, €30,000–€80,000
• Class IIb–III medical devices: 18–48 months, €80,000–€300,000+
• IVD Class C–D: 24–60 months, €100,000–€500,000+

These ranges are indicative. The actual cost depends heavily on the existing state of your technical documentation, whether you need new testing, Notified Body fees, and consultant costs.

Frequently Asked Questions