Category: Laws and Regulations

Cookie Policy

Also known as: Cookies Policy, Cookie Notice

Simply put

A cookie policy is a document, usually published on a website or mobile app, that explains what cookies and similar technologies the service uses and what they do. It typically describes whether cookies are placed by the site operator itself or by third parties, how long they remain on a user's device, and whether cookie-related data is shared with others. Its main purpose is to inform users so they can understand and make choices about the tracking taking place.

Formal definition

A cookie policy is a transparency document that inventories the cookies and comparable client-side technologies (such as pixels, local storage, and SDKs, where relevant) deployed across a website or application, together with details about each. Commonly disclosed attributes include cookie name, purpose, whether the cookie is first-party or third-party, retention or storage duration, and whether cookie-derived data is shared with third parties. A cookie policy is a notice instrument and should be distinguished from the consent mechanism itself: in most EU and UK contexts it supports the 'informed' element of consent required for non-exempt cookies, but publishing a policy does not by itself constitute or replace obtaining valid consent, nor does it discharge related obligations under the GDPR where personal data is processed. Specific content and formatting expectations vary by jurisdiction (for example between the EU, the UK, and individual US state regimes), and the evidence here does not establish a single mandated structure.

Why it matters

A cookie policy is one of the primary ways a website or app operator delivers the information users need to understand the tracking taking place on a service. In most EU and UK contexts, valid consent for non-exempt cookies must be informed, and a clear, accurate cookie policy is a key part of meeting that standard. Without a transparent inventory of what cookies are used, what they do, and whether cookie-derived data is shared with third parties, users cannot make a meaningful choice about the cookies they are asked to accept.

It is important not to overstate what a cookie policy achieves. Publishing a policy is a transparency measure, not a consent mechanism: it supports the 'informed' element of consent but does not by itself constitute or replace obtaining valid consent for non-exempt cookies, nor does it discharge related obligations under the GDPR where personal data is processed. A well-drafted policy sitting alongside a poorly designed or absent consent flow will not, on its own, bring a service into compliance in EU or UK jurisdictions.

Expectations for cookie policies also vary by jurisdiction. The content, level of detail, and role a policy plays differ between the EU, the UK, and individual US state regimes, and the evidence here does not establish a single mandated structure that applies everywhere. Operators serving users across multiple regions should treat the cookie policy as one component of a broader, jurisdiction-aware compliance approach rather than a standalone solution.

Who it's relevant to

Privacy and data protection officers

Those responsible for compliance rely on the cookie policy as a core transparency document, ensuring it accurately reflects the cookies and similar technologies actually in use and that it distinguishes first-party from third-party cookies, retention periods, and any sharing of cookie-derived data. They should treat it as one part of a wider compliance program rather than a substitute for a valid consent mechanism or for GDPR obligations where personal data is processed.

Legal counsel and compliance teams

Legal advisors draft and review cookie policies with an eye to jurisdictional differences, since content and formatting expectations vary between the EU, the UK, and individual US state regimes, and the appropriate structure is not fixed. They also advise that publishing a policy does not by itself establish valid consent for non-exempt cookies in EU and UK contexts.

Web and app developers

Developers implement and maintain the technologies the policy describes, including cookies and similar mechanisms such as pixels, local storage, and SDKs. Keeping the deployed technologies aligned with what the policy discloses, including names, purposes, and storage durations, helps ensure the document remains accurate as the service changes.

Marketing and analytics teams

Teams deploying analytics and advertising technologies contribute to the accuracy of the cookie policy, since many of the cookies and third-party integrations they use fall outside the strictly necessary category and typically require prior consent under EU and UK law. They should ensure that any third-party data sharing is properly reflected in the policy.

Inside Cookie Policy

Categories of cookies and similar technologies

A description of the types of technologies in use, typically distinguishing strictly necessary or essential cookies (generally exempt from consent under EU law) from analytics, advertising, and functional cookies (which typically require prior consent in the EU). A thorough policy also addresses similar technologies such as pixels, local storage, SDKs, and fingerprinting, which fall within the same rules even though they are not literally cookies.

Purpose of each cookie or technology

An explanation of why each cookie or category is used, supporting the requirement that consent be specific and informed. The level of detail expected may vary by jurisdiction and by the guidance of the relevant data protection authority.

Duration and storage period

Information about how long cookies remain on the user's device (for example, session versus persistent cookies) or the retention period for data collected, presented to help users understand the extent of tracking.

First-party and third-party cookies

A distinction between cookies set by the site operator and those set by third parties, and identification of the third parties involved where applicable, since third-party technologies often relate to advertising or analytics that typically require consent in the EU.

Legal basis and applicable regime

Clarity about the framework(s) relied upon. Under EU law, the placing of and access to information on a device is governed by the ePrivacy Directive and its national implementations, while any subsequent processing of personal data is governed by the GDPR. Requirements differ under other regimes, such as US state privacy laws that often rely on opt-out rather than opt-in, so the geographic scope should be stated.

How users can manage or withdraw consent

Instructions on how users can change their preferences, withdraw consent, or otherwise control cookies, including how to do so through the consent management platform (CMP) or browser settings. Where applicable, the policy may note how signals such as Global Privacy Control are handled.

Contact and update information

Details of who to contact with questions and an indication that the policy may change over time, reflecting that enforcement positions and regulatory guidance evolve.

Common questions

Answers to the questions practitioners most commonly ask about Cookie Policy.

Does having a cookie policy mean my website is compliant with cookie consent laws?

No. A cookie policy is an informational document that helps satisfy transparency expectations, but it does not by itself obtain valid consent. In most EU jurisdictions, non-essential cookies (such as analytics and advertising cookies) generally require prior, freely given, specific, informed, and unambiguous consent through a clear affirmative action, typically collected via a consent banner or consent management platform. Publishing a cookie policy does not replace that consent mechanism, nor does it substitute for the underlying legal analysis. Requirements also differ outside the EU, for example, some US state frameworks rely on opt-out rather than opt-in, so a policy's sufficiency depends on the applicable jurisdiction.

Is a cookie policy the same thing as a privacy policy?

Not exactly. A cookie policy typically focuses on the cookies and similar technologies (such as pixels, local storage, SDKs, and fingerprinting techniques) used on a site or app, while a privacy policy generally addresses broader personal data processing under regimes such as the GDPR. The two documents overlap and are sometimes combined, but they serve related yet distinct functions: cookie-related transparency connects closely to the ePrivacy rules governing the placing of and access to information on a user's device, whereas broader data processing disclosures relate to data protection law. Whether they should be separate or merged depends on your jurisdiction and organizational preferences, and this entry does not prescribe a single correct structure.

What information should a cookie policy typically include?

A cookie policy commonly describes the categories of cookies and similar technologies in use (such as strictly necessary, functional, analytics, and advertising), their general purposes, and information about duration and, where relevant, third parties involved. It may also explain how users can manage or withdraw their choices. The precise contents that are expected can vary by jurisdiction and by the guidance of the relevant data protection authority, so this list should be treated as illustrative rather than a definitive checklist. Legal review is advisable to confirm what your applicable regime requires.

How often should a cookie policy be reviewed and updated?

As a general practice, a cookie policy should be reviewed whenever the cookies or similar technologies in use change, when new third-party tools or vendors are added, or when relevant legal requirements or regulatory guidance evolve. Because tracking technologies often change through updates to third-party scripts and tags, periodic audits or automated cookie scans can help keep the policy accurate. This entry does not specify a mandatory review interval, as expectations differ across jurisdictions and organizations.

How does a cookie policy relate to a consent management platform (CMP)?

A cookie policy and a CMP serve complementary but different roles. The CMP is a technical and organizational tool that typically presents consent choices, applies user preferences, and may support consent logging and record-keeping. The cookie policy is the accompanying informational document that explains the technologies in use. A CMP can help operationalize the choices described in a policy, but neither the CMP nor the policy guarantees compliance on its own, both support compliance efforts alongside appropriate legal judgment. The specific configuration needed depends on the applicable jurisdiction and facts.

Should a cookie policy explain how users can withdraw or change their consent?

Where consent is the basis for using certain cookies, as is generally the case for non-essential cookies in most EU jurisdictions, it is common for a cookie policy to describe how users can manage, change, or withdraw their choices, often by pointing to the consent management interface. The ability to withdraw consent as easily as it was given is a widely referenced expectation under the GDPR. The exact wording and mechanism depend on your consent setup and applicable law, and this entry does not prescribe a single implementation.

Common misconceptions

A cookie policy on its own satisfies cookie consent obligations.

A cookie policy is primarily an informational and transparency document. In most EU jurisdictions it does not, by itself, obtain valid consent, which must generally be freely given, specific, informed, and unambiguous through a clear affirmative action. The policy typically works alongside a consent mechanism such as a CMP rather than replacing it. It also does not substitute for the legal judgment needed to assess compliance.

One cookie policy meeting EU standards is automatically compliant everywhere.

Cookie and tracking obligations vary between the EU, the UK, and individual US states such as California under the CCPA and CPRA, as well as other regimes. An approach built around EU-style opt-in consent will not necessarily map onto frameworks that rely on opt-out, and the geographic scope of any policy should be considered rather than assumed to be universal.

A cookie policy only needs to cover cookies.

Similar technologies such as pixels, local storage, SDKs, and fingerprinting generally fall within the same rules as cookies under EU law even though they are not literally cookies. A policy that ignores these technologies may not accurately reflect the tracking actually taking place.

Best practices

Inventory all cookies and similar technologies in use, including pixels, local storage, SDKs, and fingerprinting, and keep the policy aligned with what is actually deployed on the site or app.

Categorize technologies clearly and distinguish strictly necessary items (generally exempt from consent in the EU) from analytics, advertising, and functional categories that typically require prior consent under EU law.

State the geographic and legal scope of the policy and, where you operate across regions, address how requirements differ between the EU, the UK, and individual US states rather than presenting one regime's rules as universal.

Keep the informational cookie policy separate from, but connected to, the consent mechanism, and ensure users can easily manage or withdraw consent, for example through a CMP or browser settings.

Use clear, specific language about the purpose and duration of each technology so that the information supports specific and informed consent where that standard applies.

Review and update the policy periodically to reflect changes in your technology stack and evolving regulatory guidance, and rely on legal judgment rather than treating any tool as a guarantee of compliance.