Consent Mode v2: stay compliant without sacrificing measurement
Since March 2024, Google requires Consent Mode v2 to measure conversions and run remarketing for visitors in the European Economic Area, and US state privacy laws keep expanding. Wired badly, the banner cuts everything off. Wired well, it respects the visitor’s choice and preserves most of your data.
What Consent Mode v2 actually does
Consent Mode is a language between your cookie banner and Google’s tags. It passes four signals: analytics storage, ad storage, ad user data and ad personalization. Depending on the visitor’s choice, GA4 and Google Ads adapt their behavior: full cookies if accepted, cookieless pings and modeling if refused.
Without Consent Mode, a refusal means zero data. With it, Google statistically reconstructs part of the lost conversions and sessions. On a site with 30 to 50% refusals, the difference in your Google Ads reports is considerable.
Why it matters for a US business
If you sell or ship to Europe, or simply get European visitors, Google will not accept their conversion data without Consent Mode v2. On the US side, California, Colorado, Virginia, Connecticut and a growing list of states give residents opt-out rights that consent platforms handle through region-specific rules. I configure one setup that respects both, instead of a global “block everything” banner that destroys your measurement.
What I configure
- Choice or audit of the consent platform: Axeptio, Didomi, Cookiebot, Complianz, OneTrust, tarteaucitron or the CMS’s native solution
- Default state set to denied before any choice, updated on acceptance, region-aware (EU consent, US opt-out)
- Advanced mode (cookieless pings) or basic mode, depending on your privacy policy
- Non-Google tags (Meta, Hotjar, LinkedIn) effectively blocked until there is consent where required
- Banner categories aligned with GTM tags: nothing fires outside its category
- Banner that meets the applicable guidelines: refusing as easy as accepting, no cookie wall, retention periods
- Tests on accept, refuse and partial choice, with screenshots of the signals passed
- Privacy policy and records: mentions to update
The mistakes that cost conversions
- Google tags loaded before the visitor’s choice where consent is required
- No Consent Mode: every refusal wipes measurement entirely
- Default signal set to granted: the banner is decorative
- Banner categories that don’t match the tags: Meta loads on a plain refusal
- Consent platform updated, GTM never: the wiring breaks without anyone noticing
I check these points on every site I take over, with GTM’s debug tool and Google Tag Assistant, and show you the result in screenshots.
Compliance and performance are not opposites
An honest, clear, fast banner gets better acceptance rates than an aggressive one, and keeps you out of regulatory trouble. Alongside it, a consent-exempt audience measurement (Matomo configured for privacy) keeps a reliable view of your traffic whatever happens.
Consent Mode v2: included in the packages
Consent Mode v2 is part of every installation. For an existing banner that needs fixing, repair starts at €350.
Lead-gen website tracking
GTM + GA4 + Consent Mode v2 + Google Ads conversions, for a site whose goal is a contact or a booking. QA report included.
E-commerce tracking
Full data layer, checkout funnel, purchase and revenue made reliable on Shopify, WooCommerce or PrestaShop.
Broken or duplicated tracking repair
Diagnosis, fix, QA with screenshots.
Your questions
Is Consent Mode v2 mandatory?
To keep measuring Google Ads conversions and using remarketing with European visitors, yes. Without it, Google has not accepted their conversion data since March 2024. For a purely US audience, it is the cleanest way to honor state opt-out rights without losing measurement.
Which consent platform should I choose?
The one that integrates cleanly with your CMS and GTM. Axeptio and Didomi are solid on WordPress and Shopify; Complianz is effective and affordable on WordPress; Cookiebot and OneTrust are widespread. I work with all of them, the choice depends on your budget and constraints.
Basic or advanced mode?
In advanced mode, Google tags load before consent but only send anonymous cookieless pings, which enables modeling. Some legal teams prefer basic mode, where nothing loads before consent. I present both and apply your decision.
Let’s talk about your project
Tell me where you stand. I reply within one business day with an honest assessment.