What are the differences between EAC Certificate of Conformity and Declaration of Conformity?
Differences between EAC Certificate of Conformity (CoC) and EAC Declaration of Conformity (DoC) (TR TS / TR CU) Both are official EAEU conformity documents, both allow affixing the EAC mark and customs clearance. But the applicable Technical Regulation (TR TS) determines which one you must use — you cannot freely choose.
What are the differences between EAC Certificate of Conformity and Declaration of Conformity?
Differences between EAC Certificate of Conformity (CoC) and EAC Declaration of Conformity (DoC) (TR TS / TR CU)
Both are official EAEU conformity documents, both allow affixing the EAC mark and customs clearance. But the applicable Technical Regulation (TR TS) determines which one you must use — you cannot freely choose.
Comparison item
EAC Certificate of Conformity (CoC)
EAC Declaration of Conformity (DoC)
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Legal basis | Issued by an EAEU accredited notified certification body | Prepared & signed by the EAEU Authorised Representative (AR), registered by an accredited body into FGIS |
Product risk level | High-risk products (toys, machinery, pressure vessels, PPE, lifts, child products, fire equipment) | Medium & low-risk products (household electronics, EMC, furniture, textiles, hand tools, food contact materials) |
Conformity assessment | Sample testing + factory audit (for serial scheme 1C) Batch scheme 3C: only sample test | Sample testing required, no factory audit |
Document form | Printed on special security numbered paper, sealed & signed by certification body | Plain white paper, signed by the EAEU AR; electronic version also valid after FGIS registration |
Liability | Joint liability: certification body + EAEU AR | Full liability lies solely with the EAEU AR The registration body only checks paperwork, does not verify product compliance |
Surveillance requirement | Serial CoC (1C): annual surveillance audit + periodic sample retest Batch CoC (3C/4C): no surveillance | No annual surveillance audit after registration |
Common schemes | 1C (serial production), 3C (batch), 4C (single unit) | 1D, 2D, 3D, 4D |
Validity period | Serial: 1–5 years Batch: only valid for the specified shipment quantity | Serial: up to 5 years Batch: valid only for one consignment |
FGIS registration | Must be registered in FGIS database to take effect | Must be registered in FGIS; unregistered DoC is invalid |
Cost & lead time | Higher cost, longer processing time | Lower cost, faster issuance (if test reports are ready) |
Mandatory body ID on label | Many TR TS require placing the notified body number next to the EAC mark | Not required |
Core conceptual differences
Who takes responsibility?
CoC: The certification body audits product and factory, and shares legal accountability.
DoC: The EAEU AR self-declares that products meet TR TS; the AR bears all risks if non-compliance is found.
Who decides the document type?
It is not your choice. Each TR TS explicitly states whether CoC or DoC is mandatory for that product group.
Example: Machinery TR TS 010/2011 → CoC. Low voltage electrical TR TS 004/2011 → DoC.
EAC mark
For both documents, you may affix the EAC mark only after the document is registered in FGIS.
The EAC logo itself looks identical for CoC and DoC products.
Common misunderstandings
❌ Myth: CoC is “better” and can replace DoC.
✅ Fact: If TR TS only requires DoC, applying for CoC is optional (voluntary), more expensive and unnecessary.
❌ Myth: DoC means no testing.
✅ Fact: DoC still needs valid test protocols from an accredited laboratory as supporting evidence; you cannot register a DoC without test reports.
❌ Myth: CoC and DoC have different EAC logos.
✅ Fact: The EAC marking graphic is exactly the same for both.
Quick summary
CoC: High-risk goods, third-party certification with factory audit (serial), shared liability, higher price.
DoC: Low/medium-risk goods, AR self-declaration, no factory audit, AR full liability, faster & cheaper.
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