Artifact GuideEU

EU ePrivacy Directive Cookies and Consent

A source-backed guide to when cookies and similar technologies need consent under Article 5(3), when the transmission or exemptions may apply, and what evidence a cookie program should keep.

Built for privacy, product, analytics, marketing, legal, engineering, and consent-management owners who need banner UX, consent logs, withdrawal controls, and GDPR follow-on processing to line up.

Author
Sorena AI
Published
May 9, 2026
Updated
Oct 15, 2026
Overview

Article 5(3) requires consent before storing information on, or gaining access to information already stored in, a subscriber's or user's unless one of two exemptions applies. The operation must be solely for transmitting a communication over an electronic communications network, or for the provider to deliver an information society service explicitly requested by the user. The rule protects information on the device whether or not that information is personal data. GDPR applies as well when the operation or later use processes personal data.

Section 2

Transmission and Strictly Necessary Exemptions

The transmission exemption is narrow: the cookie or similar access must be used for the sole purpose of carrying out the transmission of a communication over an electronic communications network. WP29 gives load-balancing session cookies as an example when the information only identifies a server endpoint needed to carry the communication.

The exemption is also narrow. The functionality must be part of an information society service explicitly requested by the user, and the storage or access must be necessary for that specific functionality. User-input session cookies, shopping-cart cookies, authentication cookies for the logged-in session, user-centric security cookies, multimedia-player session cookies, and short-lived user-interface preference cookies may qualify when implemented within those limits.

  • For each claimed exemption, write the requested functionality and explain why it fails without the cookie or access.
  • Keep exempt lifetimes tied to the purpose; session or short-lived storage is easier to justify than persistent storage.
  • Use separate cookies for exempt and non-exempt purposes so an exempt function is not combined with tracking, advertising, profiling, or market-research use.
  • Do not classify third-party advertising, social plug-in tracking, cross-site analytics, or persistent login as without a separate consent analysis.
Section 4

Evidence Logs, Analytics Caveats, and Retesting

Consent evidence should prove both what the user chose and what the interface allowed at that time. The EDPB consent guidance says controllers should be able to show the session in which consent was expressed, the consent workflow, and the information presented. For cookies, that means saving CMP configuration, banner text and screenshots, purpose and vendor versions, tag-firing tests, and consent or refusal events without collecting excessive additional data.

Analytics requires a separate check. WP29 does not treat first-party analytics as under the two Article 5(3) exemptions, and national approaches to audience-measurement exemptions are not uniform. Current French guidance limits its exemption to publisher-exclusive audience measurement that produces anonymous statistics and does not allow cross-checking, non-anonymous third-party transmission, or cross-site or cross-app tracking. If relying on any national analytics exemption, cite the current local rule, document the live configuration and retention limits, and do not present a provider self-assessment as regulator certification.

  • Keep a current cookie and tracker register with name, domain, party, purpose, expiry, trigger, data sent, exemption or consent basis, and owner.
  • Log consent, refusal, withdrawal, and preference changes with the banner version, purpose taxonomy, timestamp, interface, and jurisdictional rule set used.
  • Store test evidence that non-essential tags do not fire before consent and stop after withdrawal where consent was the basis.
  • Review after new vendors, tag-manager releases, analytics configuration changes, embedded media, login changes, A/B testing, mobile SDK updates, or market launches.
Section 5

GDPR Interplay After Cookies Fire

The ePrivacy rule decides whether terminal-equipment storage or access is allowed. The GDPR can still apply to subsequent processing when the cookie, pixel, SDK, or identifier leads to personal-data processing. The EDPB Cookie Banner Taskforce report and Opinion 5/2019 both describe this coexistence: ePrivacy governs placement or reading, while the GDPR governs later personal-data processing and consent conditions where consent is used as the GDPR lawful basis.

Do not treat Article 5(3) consent as a full GDPR compliance answer. The cookie record should connect the storage/access decision to the GDPR record of processing, lawful basis, controller or joint-controller analysis, processor terms, transparency notices, data-subject rights handling, retention, international transfer checks, and security controls where personal data is processed.

Do all cookies need consent under the EU ePrivacy Directive?

No. Article 5(3) allows storage or access without consent only when it is solely for transmission over an electronic communications network or to provide an information society service explicitly requested by the user. Non-exempt tracking, advertising, most third-party social plug-in tracking, and multipurpose cookies with non-exempt purposes need consent.

What should a cookie consent log prove?

It should prove what the user was told, which purposes and vendors were available, what action the user took, when it happened, which banner and consent taxonomy were active, and that non-essential cookies were blocked before consent and stopped after withdrawal where consent was the basis.

  • Link each consent purpose in the CMP to the matching GDPR purpose and lawful basis in the processing record.
  • Record the competent-authority route and applicable national ePrivacy implementation for each country covered by the deployment.
  • Make privacy notices match the banner purposes, vendor list, retention claims, and actual tracker behavior.
  • If consent is withdrawn, stop consent-based storage/access and related consent-based processing; keep only data that has a separate lawful basis and documented retention reason.
Primary sources

References and citations

ec.europa.eu4 citations
Referenced sections
  • Source for the transmission and strictly necessary exemptions, cookie-purpose analysis, and examples of exempt and non-exempt cookies.
  • Supports purpose-by-purpose classification and warns that cookie characteristics alone do not decide whether an exemption applies.
  • Defines the two Article 5(3) exemption criteria and gives examples of exempt and non-exempt cookie uses.
Show 1 more
  • Explains why analytics, advertising, and tracking purposes generally need careful consent analysis rather than automatic exemption treatment.
"Cookie Consent Exemption"
More quoted passages
"the purpose and the specific implementation"
"sole purpose of carrying out the transmission"
"behavioural advertising, analytics or market research"
eur-lex.europa.eu3 citations
Referenced sections
  • Primary Directive text for Article 5 confidentiality, terminal-equipment storage/access, traffic-data consent, and Article 13 direct-marketing rules.
  • Article 5(3) provides the terminal-equipment storage/access rule and the transmission and strictly necessary carve-outs.
  • Sets the legal language for technical storage/access used only for transmission or strictly necessary service delivery.
"storing of information, or the gaining of access"
More quoted passages
"strictly necessary in order for the provider"
edpb.europa.eu3 citations
Referenced sections
  • Cookie-banner enforcement coordination source for banner UX problems and the ePrivacy/GDPR split between cookie access and subsequent processing.
  • Summarizes supervisory authority positions on cookie-banner complaints, including banner practices assessed against ePrivacy and GDPR concepts.
  • States that ePrivacy applies to placement or reading of cookies and GDPR applies to subsequent personal-data processing.
"Cookie Banner Taskforce"
More quoted passages
"subsequent processing activities"
edpb.europa.eu3 citations
Referenced sections
  • Consent-quality and accountability source for freely given, specific, informed, unambiguous consent, proof of consent, and withdrawal.
  • Defines valid GDPR consent conditions used for cookie consent quality and withdrawal mechanics.
  • Supports consent recordkeeping, proof of the consent workflow, and easy withdrawal requirements.
"freely given, specific, informed and unambiguous"
More quoted passages
"demonstrate that valid consent has been obtained"
digital-strategy.ec.europa.eu2 citations
Referenced sections
  • Historical Commission material about the proposed modernization of the EU online privacy framework.
  • Historical Commission material about the proposed modernization of the EU online privacy framework alongside wider digital privacy policy.
"future proof legal framework for online privacy"
eur-lex.europa.eu2 citations
Referenced sections
  • Amending text that introduced the current Article 5(3) consent wording for terminal-equipment storage and access.
  • Shows the amended consent wording for storing information or gaining access to information already stored in terminal equipment.
"has given his or her consent"
edpb.europa.eu2 citations
Referenced sections
  • Technical-scope source for cookies and similar technologies, including tracking pixels, tracked URLs, local processing, IP-based tracking, IoT reporting, and unique identifiers.
  • Explains that Article 5(3) can apply beyond cookies, including pixels, tracked URLs, local processing, IP-based tracking, IoT reporting, and unique identifiers.
"technical operations covered by Article 5(3)"
edpb.europa.eu2 citations
Referenced sections
  • Source for the coexistence of ePrivacy and GDPR where terminal-equipment access is followed by personal-data processing.
  • Explains how ePrivacy and GDPR can both apply and how ePrivacy particularises or complements GDPR in relevant areas.
"governed by provisions of both"
eur-lex.europa.eu
Referenced sections
  • Supports the rule that preselected boxes are not sufficient for cookie consent and that users must receive relevant cookie information.
"preselected checkbox"
cnil.fr
Referenced sections
  • Provides national regulator guidance on analytics configurations, useful as a caveat that audience-measurement exemptions depend on strict conditions and local implementation.
"audience measurement"
cnil.fr
Referenced sections
  • Supports the current French criteria for exempt audience measurement, retention recommendations, configuration evidence, and the warning that provider self-assessment is not CNIL certification or validation.
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