CE Marking Requirements: The Complete Guide

CE marking requirements come down to five things for almost every product: figure out which EU rules apply to your product, meet the safety and performance requirements those rules set, put together technical documentation proving it, sign a declaration of conformity, and affix the CE mark itself. The mark is not a certificate issued by an authority — for the large majority of consumer products, you affix it yourself, based on your own evidence that the product meets what’s required. That self-declared nature is exactly what trips people up: there’s no application to file and no approval to wait for, which means there’s also no one checking your work before the product ships. If it’s wrong, you find out from a marketplace, a customs officer, or a market surveillance authority — after the product is already on sale.

This guide walks through what CE marking actually certifies, which rules typically apply, the steps to get there, and where sellers most often get it wrong.

CE marking requirements at a glance

Most consumer products draw from a small, predictable set of EU rules. The figure below shows the ones that come up most often for electrical and connected products — a given product usually sits under two or three of these at once, plus the general safety baseline underneath all of them.

The EU directives and regulations that most commonly apply to consumer and electrical products, with GPSR as the baseline underneath all of them.

What CE marking actually certifies

CE marking is not a quality mark, and it’s not a mark of EU origin — a huge share of CE-marked products are manufactured outside the EU. It’s a declaration, made by the manufacturer (or the importer, if the manufacturer is outside the EU and the importer takes on that role), that the product meets every EU requirement that applies to it. The mark itself is just two letters affixed to the product; the substance behind it is the technical file and the declaration of conformity sitting behind that mark, which you’re expected to produce on request but don’t submit anywhere in advance. Getting the underlying product classification right matters more than the mark itself — see our breakdown of whether an LED face mask needs CE marking for a worked example of a product where the marketing category and the regulatory category don’t match.

For most consumer products, nobody checks this before the product is sold. A national market surveillance authority can ask for the file at any time, a customs officer can hold a shipment pending proof, and a marketplace can suspend a listing until documents are provided. The absence of upfront checking is a feature of the system, not a loophole — it’s what makes self-certification fast and cheap compared to third-party approval schemes. It also means the responsibility sits entirely on the person who affixes the mark.

Which rules typically apply

CE marking isn’t one rule — it’s an umbrella covering dozens of separate EU laws, each targeting a specific risk or product category. A given product usually falls under several of them at once. The most common ones for consumer and electrical products:

Low Voltage Directive (electrical safety)

Covers electrical equipment operating within defined voltage ranges — the baseline for anything that plugs into the mains. It sets requirements around shock, fire, and mechanical hazards.

EMC Directive (electromagnetic compatibility)

Covers whether a device emits electromagnetic interference that could disrupt other equipment, and whether it’s sufficiently immune to interference from other devices. Almost anything with a circuit board needs this assessed.

Radio Equipment Directive

Applies specifically to anything that transmits or receives radio signals — Bluetooth, Wi-Fi, cellular, or dedicated RF. It layers additional requirements on top of the general electrical and EMC ones, including, for connected devices, a growing set of cybersecurity obligations.

RoHS (hazardous substances)

Restricts specific hazardous substances — lead, mercury, cadmium, certain flame retardants — in electrical and electronic equipment. This is a substance-level restriction, not a performance or safety test, and it’s usually demonstrated through supplier declarations and documentation rather than in-house testing.

Toy Safety Directive

Applies to anything intended or clearly designed for children under 14, with its own mechanical, chemical, and (for electronic toys) electrical safety requirements layered on top.

Machinery Regulation

Applies to products with moving parts that pose a mechanical risk — this one carries some of the heaviest documentation and, in higher-risk categories, mandatory third-party involvement.

On top of whichever of these apply, the General Product Safety Regulation sits underneath as a catch-all baseline — it applies to every consumer product sold in the EU regardless of whether a product-specific directive also applies, and it’s the source of obligations like having a contactable EU-based responsible person and a complaints-handling process, not just a compliant product. See our complete guide to GPSR for what this baseline actually requires.

The CE marking process, step by step

The six-step CE marking process, from classification through to affixing the mark.

1. Identify which rules apply

This is the step people get wrong most often, because it’s tempting to reason from what similar products do rather than working out your specific product’s classification. A device that looks like a simple gadget can trigger the Radio Equipment Directive because of a Bluetooth chip nobody thought to flag, or drift toward Toy Safety Directive territory because of how it’s marketed rather than how it’s built.

2. Determine the essential requirements

Each applicable directive sets out “essential requirements” — safety and performance outcomes the product has to achieve, without specifying exactly how. Harmonised standards (the EN-numbered documents) provide a presumption of conformity: build to the relevant standard, and you’re presumed to meet the essential requirement it covers, without having to argue the point from first principles.

3. Test against the relevant standards

This is where a lab gets involved — electrical safety testing, EMC testing, radio testing, chemical testing for RoHS, whatever combination applies to your product. Test reports are the evidence; they don’t come from a documentation service, they come from an accredited lab.

4. Assemble the technical documentation

The technical file collects everything: product description, design and manufacturing information, the list of standards applied, the test reports, the risk assessment, and instructions and warnings. This is the file you’re expected to produce on request — it’s not submitted anywhere by default.

5. Draw up the declaration of conformity

A signed statement, from the manufacturer, listing exactly which directives and standards the product meets. It’s a specific document with defined required content, not a generic letter.

6. Affix the mark

The CE mark itself, sized and proportioned to the specification, placed on the product (or, where the product is too small, on the packaging and documentation instead).

Self-certification vs. a notified body

For most consumer electronics, appliances, and toys, self-certification is the default route: you test against the standards, assemble the file, sign the declaration, and affix the mark — no third party reviews any of it before the product ships. A notified body only enters the picture for higher-risk product categories, or for certain risk levels within a category (some machinery, some toy categories with specific hazards, some radio equipment configurations). If your product doesn’t fall into one of those higher-risk categories, self-certification is what applies, and it’s what the large majority of the sellers we work with are doing.

The trade-off is exactly the one described above: self-certification is faster and cheaper, but it puts the entire burden of getting it right on you, with no external check until something goes wrong.

What sellers get wrong most often

Treating CE marking as a single, generic requirement

“Is this CE marked?” isn’t really a yes/no question — it’s shorthand for “does this meet every directive that applies to it.” A product can be fully compliant with the Low Voltage Directive and still be missing RoHS documentation, or fully tested for EMC and still lack the risk assessment the General Product Safety Regulation expects. Partial compliance looks identical to full compliance from the outside, right up until someone asks for the file.

Reusing a supplier’s certificate without checking its scope

A supplier’s CE certificate or test report is a starting point, not a finished answer. Ask which specific standards were tested, whether the tested sample matches what you’re actually selling (colour and cosmetic changes usually don’t matter; different components or a different power rating usually do), and whether every applicable directive is covered — RoHS documentation is the one most often missing from a generic supplier pack.

Assuming the mark transfers with private labelling

If you’re putting your own brand on a product manufactured by someone else, you — not the original manufacturer — are generally the one taking on manufacturer obligations under EU law, including the responsibility for the technical file being accurate. A supplier’s compliance work doesn’t automatically become your legal cover. The European Commission’s own guidance for manufacturers (part of its official CE marking resource) sets out this responsibility directly — worth reading once, even though it’s written for a general audience rather than sellers specifically.

Ignoring cybersecurity obligations on connected devices

A product that adds Bluetooth or Wi-Fi to what was previously a simple electrical device doesn’t just pick up radio testing — it also picks up a growing set of cybersecurity-related obligations under the Radio Equipment Directive and, increasingly, the Cyber Resilience Act for products with digital elements. Sellers who compliance-tested an earlier, non-connected version of a product sometimes assume the new connected version is covered by the same file. It isn’t.

Technical file: what actually goes in it

The exact contents vary by which directives apply, but a typical technical file for an electrical consumer product includes:

• A general description of the product and its intended use
• Design and manufacturing drawings or specifications sufficient to understand how it works
• The list of harmonised standards applied, and how they were applied
• Test reports from the lab covering each applicable directive
• The risk assessment, showing hazards considered and how they’re addressed
• Instructions for use and warnings, in the language(s) of the markets sold into
• The signed declaration of conformity itself

None of this gets submitted anywhere by default — it’s assembled and kept on file, ready to produce within the timeframe a market surveillance authority requests (typically a matter of days, not weeks).

What it actually costs

There’s no fixed price, because the cost is driven by testing, not paperwork. Lab testing for a straightforward electrical product covering LVD and EMC is the largest line item; adding radio testing for a connected device, or chemical testing for RoHS, adds to that. A product needing multiple rounds of testing — because an initial sample failed, or because the design changed mid-process — costs more than one that passes cleanly on the first attempt, which is one reason it’s worth testing a genuinely representative sample rather than an early prototype.

Documentation — the technical file, the declaration, the risk assessment — is comparatively inexpensive and can often be templated once the underlying test results exist. Sellers who compare “CE marking cost” between products are usually really comparing testing scope, not paperwork effort: two products that both “just need CE marking” can cost very different amounts depending on how many directives apply and how many rounds of testing each one needs.

CE marking vs. UKCA and FCC

CE marking only covers the EU (plus a handful of countries that recognise it directly). The UK has its own UKCA mark, built on largely similar technical requirements but a separate legal framework and separate marking — a CE-marked product isn’t automatically UKCA compliant, and the two marks aren’t interchangeable on packaging in every case. The US doesn’t use CE marking at all; it works through a different system entirely — FCC rules for radio and digital devices, CPSC requirements for general consumer product safety, and UL or another NRTL listing for electrical safety in many commercial contexts. A product sold in the EU, UK, and US needs three separate compliance stories, even when the physical product is identical.

A quick pre-launch checklist

Before a CE-marked product ships, it’s worth running through this in order:

• Confirm every directive that applies — not just the obvious one (electrical safety), but EMC, radio, RoHS, and GPSR as a baseline
• Confirm the tested sample matches the exact product you’re selling, not an earlier prototype or a supplier’s generic version
• Confirm RoHS documentation exists — the single most commonly missing piece on generic supplier packs
• Confirm the risk assessment and instructions reflect the actual test results, not a generic template
• Confirm the declaration of conformity lists every applicable directive, not just the first one that comes to mind
• Confirm who’s legally the manufacturer for this listing — you, if you’re private labelling, not automatically your supplier

Every item on that list maps to a specific document or decision you can point to — the goal is a file you can hand over on request, not one you’d need to reconstruct under pressure.

Frequently asked questions