Introduction
Data protection has become such a pressing matter that companies today need to rethink their digital strategy.
In Quebec and across Canada, personal data protection is more tightly regulated than ever. With Quebec’s Law 25 now in force, along with federal rules such as PIPEDA (the Personal Information Protection and Electronic Documents Act), companies need to adapt so they can handle user data in a transparent, compliant way.
At the same time, changing digital habits and tougher consent rules are making it harder to collect user data. More and more internet users are declining cookies, which limits how much data companies can gather for analyzing performance, personalizing experiences, and fine-tuning marketing campaigns.
To help with these difficulties, Google built Consent Mode v2, a tool that lets companies keep using analytics data while still respecting users’ consent choices. Thanks to advanced conversion modeling and anonymized signals, it helps advertisers hold on to valuable information without breaking the law.
But how does Google Consent Mode v2 actually work? What does it offer companies, and how can it be added to a website the right way? Let’s take a closer look at this tool that helps balance marketing performance with regulatory compliance.
What Is Google Consent Mode?
Google Consent Mode v2 is a tool that lets companies adjust how they collect and use data based on the consent users give through a banner. It automatically changes how Google tags behave (Analytics, Ads, Tag Manager, and so on) based on those preferences, turning cookies and related tracking mechanisms on or off.
How Does It Work?
When a visitor lands on a website, they can choose to accept or decline cookies and ad tracking. Depending on that choice, Google Consent Mode v2 applies one of two scenarios:
- If the user accepts cookies: tracking works as usual. Google tags collect data and conversions are recorded the normal way.
- If the user declines cookies: Google Consent Mode v2 blocks advertising and analytics cookies from being stored, but it still sends anonymized signals to Google so it can model an estimate of the conversions that were lost.
This way, companies can keep measuring their marketing performance even when users decline cookies. Google runs modeling algorithms based on observed trends to estimate how untracked visitors likely behaved, so this data isn’t lost completely.
Consent Mode and CMPs: Two Tools That Work Together
It’s worth noting that Google Consent Mode v2 is a technical mechanism that adjusts how Google tags behave based on user choices. Collecting consent itself is a separate job, handled by a consent management platform (CMP).
For this to work properly, you need a CMP that’s compatible with Consent Mode v2 and supports the TCF v2.0 standard, such as CookieYes or Didomi.
The CMP displays the consent banner, collects the choices users make (accept, decline, or customize), and passes that information on to Consent Mode, which then applies the right behavior to Google Analytics, Ads, and other tags.
So one can’t work without the other: the CMP is the legal gateway for consent, and Consent Mode is its technical extension on the tag side. Without this compatibility, tags won’t be able to respond correctly to user choices, putting both compliance and data quality at risk.
Why This Matters Now
With more people declining consent and data protection rules getting stricter, companies need tools that let them keep measuring marketing performance while staying within the law. Google Consent Mode v2 helps with this by balancing privacy with usable data collection. That said, while it reduces data loss, it doesn’t eliminate it completely.
Google Consent Mode helps companies:
- Keep statistics accurate: as more people decline cookies, it gets harder to measure exactly how well ad campaigns are performing. Through modeling, Google Consent Mode v2 softens the data loss by estimating conversions, though these estimates don’t replace real data collected with consent.
- Stay compliant with regulations: with laws like Quebec’s Law 25 and Canada’s PIPEDA, companies need to respect users’ privacy choices while still gathering data that’s useful for their digital marketing.
- Get ready for a future without third-party cookies: browsers like Safari and Firefox are gradually blocking third-party cookies, which limits traditional tracking. Google Consent Mode v2 fits into this shift by offering a lasting alternative for tracking conversions and fine-tuning ad campaigns.
By adding this tool, companies can keep a close eye on their performance while meeting legal requirements and consumers’ growing expectations around data protection.
What’s New in Google Consent Mode v2
Google Consent Mode v2 brings real improvements over the first version, strengthening both consent management and data modeling. It introduces two new consent signals in particular, which let companies fine-tune how they track users while staying compliant.
So on top of the existing settings, Google Consent Mode v2 adds:
- ad_user_data: this signal controls whether user data can be sent to Google for advertising purposes, such as remarketing or conversion tracking.
- ad_personalization: this signal determines whether ads can be personalized based on a user’s browsing behavior and preferences.
If a user declines these settings, Google blocks the collection of the corresponding data and prevents it from being used in personalized campaigns.
More Advanced Conversion Tracking
When a user declines cookies, Google can no longer directly track what they do on a website. To avoid losing all this data, Google Consent Mode v2 uses anonymized signals and applies AI models to estimate the conversions that were lost.
This relies on:
- Looking at the behavior of users who did consent, to spot trends.
- Using anonymous signals, such as time spent on a page or interaction with certain parts of the site.
- Applying predictive models that fill in the gaps by estimating how many conversions likely happened among users who declined tracking.
This way, companies get data that better reflects their real performance, even without direct tracking.
Real-Time Adjustment of Google Tags
Google Consent Mode v2 adjusts how ad and analytics tags behave in real time, based on each user’s consent status. This means that if a user changes their mind (for example, accepting cookies after having declined them), the tags adapt right away, with no need to reload the page.
This flexibility lets companies make sure their data collection always matches user preferences, without fully giving up their ability to analyze and track ad performance.
Why Should Companies Adopt It Now?
Google Consent Mode v2 gives companies a solid way to deal with the new data protection rules now in force and the growing number of users declining cookies.
A Major Problem: Losing Marketing Data
One of the biggest problems with cookie refusal is the loss of analytics and advertising data. Without the right tool in place, companies can struggle to measure:
- Conversions generated by their ad campaigns (Google Ads, YouTube, Display, and so on).
- Visitor behavior on their site (time spent, pages viewed, actions taken).
- The real impact of their marketing efforts, due to a lack of usable data.
Thanks to conversion modeling, Google Consent Mode v2 provides an estimate of overall performance.
A Response to Growing Legal Requirements
Law 25 and PIPEDA require companies to get explicit consent before processing users’ personal data. Failing to follow these rules can lead to fines and damage a company’s reputation.
With this in mind, it’s worth noting that Google Consent Mode v2 doesn’t replace a consent management platform (CMP). Only a compliant CMP can display a banner, collect explicit consent, and store users’ choices in a legally valid way.
Consent Mode v2 then steps in as a complement, dynamically adjusting how Google tags (Analytics, Ads, and so on) behave based on those choices.
Google Consent Mode v2 helps companies stay compliant by:
- Dynamically adjusting data collection based on user choices.
- Avoiding the storage of cookies users didn’t agree to, while still allowing performance analysis through anonymized signals.
- Meeting regulators’ requirements while keeping a focus on marketing performance.
A Proactive Move as the Market Changes
Even though Google recently announced it won’t be removing third-party cookies from Chrome after all, data protection remains a pressing matter. Stricter regulations (like Quebec’s Law 25 or Europe’s GDPR), combined with a sharp rise in cookie refusals among internet users, are making it harder for companies to collect complete, trustworthy marketing data.
By setting up Google Consent Mode v2 now, companies can:
- Deal better with the rising number of cookie refusals and limit analytics data loss.
- Keep enough measurement in place to run their marketing campaigns well.
- Fine-tune their campaigns using AI-based models, which are set to become standard for measuring how users interact with brands.
Adopting Google Consent Mode v2 is a smart move for keeping marketing campaigns running long-term, getting the most out of performance tracking, and staying compliant with current regulations.
Consent: A Requirement Across Every Platform
Though often associated with Google’s ecosystem, respecting user consent is now a requirement across every major advertising platform.
Microsoft Advertising (Bing) now requires, just like Google, either a Consent Mode setup or the TCF v2.0 standard, in order to dynamically adjust its tracking tags (UET tags) based on the choices users make.
Without this setup, these campaigns risk being disabled or losing their impact, since conversions can no longer be measured correctly. This can cause a sharp drop in performance.
This makes it all the more necessary to set up a TCF v2.0-compatible CMP that can send consent signals to several platforms at once, and to configure both Google Consent Mode v2 and Microsoft’s UET Consent Mode in Google Tag Manager or directly in the site’s code.
How Do You Set Up Google Consent Mode v2 on Your Site?
Setting up Google Consent Mode v2 is a necessary step for tracking performance properly while meeting data protection requirements. That said, putting it in place can get complicated, and calls for a solid understanding of Google tags, Google Tag Manager, and the rules currently in force.
That’s why working with a specialized agency like Hamak means a smooth, compliant, well-tuned setup, without the risk of mistakes that could skew your data or cause compliance problems. Our specialists can guide you through setting up this tool.
A Technical Setup That Calls for Real Know-How
Google Consent Mode v2 offers two types of setup, each with its own technical specifics:
| Setup | Features | Limits |
| Basic Mode | Google tags only fire if the user accepts cookies. | Conversions are completely lost when cookies are declined. |
| Advanced Mode | It sends anonymized signals to Google even when consent is declined. | Requires precise configuration to make sure the modeled data is accurate and compliant. |
The basic setup may look simpler, but it leads to a large loss of marketing data. The advanced setup offers a better alternative, but it requires more detailed configuration of Google Tag Manager and consent tags. A setup mistake can block data collection, skew conversions in Google Ads or Google Analytics 4, or even put your site’s compliance at risk.
Our specialists make sure every setting is defined correctly, so conversion tracking runs as well as possible, your site stays compliant with current regulations, and the data used in your marketing campaigns is as accurate as it can be.
With data protection rules getting stricter and more users declining cookies every day, companies need to rethink how they measure and track their marketing. Google Consent Mode v2 offers a real answer to this: it lets you respect user consent while still getting useful performance data, through conversion modeling and the dynamic adjustment of Google tags based on stated preferences. Need help getting set up with Google Consent Mode v2? Contact us today for an audit and a setup built around your needs.
