Advertising without cookies in 2026: how targeting has changed and what businesses should do with their data
Just a few years ago, advertisers relied heavily on cookies, pixels and user behavior history to measure advertising effectiveness, bring visitors back to the website and find lookalike audiences.
In 2026, this model works differently. It is affected by browser privacy settings, requirements for consent to data processing, tracking restrictions in mobile apps and the development of artificial intelligence algorithms. At the same time, Google Ads, Meta Ads and TikTok Ads are not abandoning personalization, but are developing their own tools for transmitting conversion data.
For businesses, this means a shift in priorities: advertising effectiveness increasingly depends not on the volume of collected data, but on its quality, lawful use and the accuracy of measuring results.
What really happened to cookies
First, it is worth distinguishing between two types of cookies. First-party cookies are created by the website the user visits: they store settings, help analyze on-site behavior and measure conversions. Third-party cookies are created by external domains, and it is these that have historically been used to track users across different websites.
The restrictions primarily concern third-party cookies. Here is how the situation has evolved:
| Period | What happened |
| 2020 | Safari fully blocks third-party cookies by default as part of Intelligent Tracking Prevention |
| 2022 | Firefox enables Total Cookie Protection by default: third-party cookies are isolated for each website |
| July 2024 | Google abandons fully disabling third-party cookies in Chrome in favor of a user choice model |
| April 2025 | Google announces that it will not introduce a separate prompt to opt out of third-party cookies and keeps the existing privacy settings in Chrome |
| October 2025 | Google retires most Privacy Sandbox technologies, including Topics, Protected Audience and Attribution Reporting API, due to low market adoption |
So, in Chrome, third-party cookies remain available by default in 2026, except in Incognito mode. But this does not mean a return to the old tracking model. Safari, which accounts for a significant share of mobile traffic, and Firefox block third-party cookies by default, some users browse with ad blockers, and consent requirements apply in the EU. In addition, Google has abandoned most of the Privacy Sandbox technologies that were supposed to become an alternative to cookies, so no single industry standard has emerged as a replacement.
What this means for advertisers
When some signals about user behavior are unavailable, the advertiser loses part of the information about the path from click to purchase. This affects three areas:
- Retargeting. Not all website visitors can be added to audiences using the same logic, so audiences become smaller.
- Attribution. Some conversions are harder to link to a specific advertising touchpoint.
- Optimization. Algorithms receive incomplete data on campaign results and have a weaker understanding of whom to look for.
Advertising does not stop working because of this. But businesses have to pay closer attention to their measurement system and data sources.
How Google, Meta and TikTok find audiences without full access to cookies
A common misconception: without cookies, advertising platforms cannot find customers. In reality, cookies are just one source of signals. Every major platform combines browser tracking with server-side data transmission and its own algorithms.
| Platform | Browser tool | Server-side data transmission | Additional mechanisms |
| Google Ads | Google tag | Enhanced Conversions, offline conversion import | Consent Mode, conversion modeling, search query context |
| Meta Ads | Meta Pixel | Conversions API, including one-click setup | Automatic event deduplication |
| TikTok Ads | TikTok Pixel | Events API | Transmission of events from the website, app and CRM |
Google Ads
Search query context remains one of the strongest signals for Google: people formulate what they are looking for themselves. To measure results, Google offers Enhanced Conversions: data the user left on the website, such as an email in a lead form, is hashed and sent to Google for more accurate matching of conversions with ad clicks.
Consent Mode adapts tag behavior to the user’s choice regarding cookies. If the user has declined tracking, Google can use conversion modeling when there are enough signals: it estimates likely results rather than restoring the history of each user.
Meta Ads
Meta Pixel collects events directly in the browser, while Conversions API sends them from the advertiser’s server or integrated systems. For example, an online store can send product views, add-to-cart events and purchases through both channels at once, and Meta removes the duplicates itself.
In April 2026, Meta launched one-click Conversions API setup in Events Manager: a server connection is created automatically and duplicates the events the Pixel already sends, without involving a developer. Limitations: it works only for website events, does not allow selecting individual parameters, and apps, offline sales and complex scenarios still require a full integration.
TikTok Ads
TikTok offers TikTok Pixel and Events API for transmitting events from the website, app, CRM and other sources directly from the advertiser’s server infrastructure. As with other platforms, the result depends on correct integration, user consent and compliance with platform rules.
First-party data: your own data as a strategic asset
First-party data is data that a company collects directly through interaction with its audience:
- orders and purchases;
- inquiries to the sales team and interaction history in the CRM;
- newsletter subscriptions with proper consent;
- on-site actions, if their collection meets privacy requirements;
- repeat purchases and other business events.
It is this kind of data that shows not only who clicked on an ad, but also who became a customer and generated revenue.
Example for a B2B company
A company launches advertising in Google Ads and LinkedIn Ads to attract corporate clients. The ad account shows 100 leads, but the CRM reveals that only 20 of them match the target profile.
If campaigns are optimized for the number of leads, the algorithm will keep looking for people who readily fill in forms but do not buy. If the company sends the platform signals about qualified leads and sales, optimization starts working toward real business goals. This does not guarantee instant improvement, but it provides a much stronger basis for decisions.
Where to start
- Identify what data you already have in the CRM, on the website and in sales systems.
- Separate initial inquiries, qualified leads and actual sales.
- Align the names and recording rules for key events between marketing and the sales team.
- Check what data can lawfully be shared with advertising platforms.
- Set up integrations and regularly check the quality of event transmission.
Does server-side tracking solve the problem of cookies
No, but it reduces some of the losses. Conversions API and similar integrations send events from the server, CRM or other systems and do not depend solely on the browser pixel. This matters, because ad blockers, browser restrictions, technical errors and unstable connections lead to the loss of some events.
At the same time, server-side transmission does not exempt you from consent requirements. Browser privacy settings do not stop data from being sent from the server, so responsibility for the lawfulness of this data lies entirely with the advertiser.
When it is worth implementing server-side tracking
- browser events are transmitted incompletely;
- the path to purchase is complex and involves several stages;
- website data needs to be combined with the CRM or offline sales;
- there is a technical team to ensure correct implementation and support.
What to check before launch
- events are configured correctly and match actual user actions;
- conversions are not duplicated between the browser and server channels;
- user consent is processed correctly;
- no unnecessary or sensitive data is transmitted;
- the integration meets the platform’s technical requirements.
How changes in measurement affect the advertising budget
Tracking problems affect not only reports, but also decisions about how money is allocated. Businesses most often face three situations.
There are fewer conversions in the ad account than sales in the CRM
The campaign generates sales, but the ad account records only some of them. Reasons: tracking restrictions, incorrect tags, different attribution models or conversion windows. What to do: check the tags and Consent Mode, compare ad account data with the CRM and do not cut the budget solely because of a drop in the number of recorded conversions.
Cost per lead is rising
This is influenced by competition, demand, creatives, the landing page, traffic quality or changes in measurement. What to do: separate technical issues from a real decline in effectiveness and check lead quality, the lead-to-sale conversion rate and customer acquisition cost.
Retargeting reaches fewer people
Reasons: a smaller available segment, a short audience retention period, consent rules or pixel errors. What to do: check the audience source and event volume, and strengthen other channels, in particular search advertising and work with your own customer base.
Spend must be accurate, even when results are modeled
When some conversions are estimated by algorithms rather than recorded directly, the accuracy of the other half of the equation becomes critical. To correctly calculate customer acquisition cost and return on ad spend, the finance department needs to see actual advertising spend for each platform and each account, backed by documents, and match it with revenue in the CRM. If spend is scattered across personal cards, several currencies and different platforms, even perfectly configured analytics will not give an accurate picture of return on investment.
Action plan for Ukrainian businesses
Step 1. Audit your tracking
Check whether Google tag, Google Analytics 4, Meta Pixel and TikTok Pixel are working correctly, whether key events are recorded and whether conversions are duplicated.
Step 2. Check your consent mechanism
If you advertise to an audience in the European Economic Area, since March 2024 full remarketing and personalized advertising in Google have required Consent Mode v2 with consent signals passed. Check your cookies banner and consent management platform. Under EU rules, consent must be informed, specific, freely given and revocable. When working with Ukrainian users’ data, take into account the requirements of the Law of Ukraine “On Personal Data Protection”.
Step 3. Connect advertising with your CRM
For B2B companies, it is especially important to see what happens after a lead is submitted. Set up consistent tracking of qualified leads, deals and sales.
Step 4. Assess the need for server-side tracking
Do not implement Conversions API just because it is a trend. First, determine what data is being lost, whether it can be transmitted lawfully and whether the integration is justified in terms of cost and complexity. For smaller projects on Meta, one-click setup may be sufficient.
Step 5. Optimize campaigns for valuable events
If a business needs sales, optimizing for page views or the number of form submissions may not be enough. With high-quality data, it is worth moving to optimization for qualified leads or purchases.
Step 6. Compare advertising data with business results
Track not only clicks, impressions and cost per lead, but also qualified leads, actual sales, customer acquisition cost and revenue. Take into account the difference between advertising platforms’ attribution models and CRM.
What comes next for targeting
In 2026, there are no grounds to claim that advertising is moving entirely into a world without cookies. Browsers, platforms and regulators are moving at different speeds, so the changes are uneven. At the same time, the direction is clear:
- The role of first-party data is growing. Data about your own customers, orders and sales is becoming the foundation for measurement and optimization.
- Server-side integrations are getting simpler. The launch of one-click Conversions API setup shows that platforms aim to make server-side transmission the standard.
- Conversion modeling is expanding. Algorithms estimate an increasing share of results that cannot be observed directly.
- Responsibility for data quality is growing. Errors in analytics directly affect automated optimization and budget decisions.
- Privacy remains a priority for regulators. Technical capabilities do not override the requirements for consent and lawful use of data.
FAQ
Will cookies disappear in 2026?
No. First-party cookies continue to work. Third-party cookies remain available by default in Chrome, but Safari and Firefox block them by default, and in the EU their use for advertising requires user consent.
What is first-party data?
It is data that a company collects itself through interaction with customers: orders, inquiries, CRM history, subscriptions and on-site actions with proper consent.
Does Conversions API replace Pixel?
No. Meta recommends using both tools together: Pixel sends events from the browser, Conversions API from the server, and the system removes duplicates automatically.
Do Ukrainian businesses need Consent Mode?
If you show ads to users in the European Economic Area, yes: without it, remarketing and personalized advertising in Google are limited for this audience. For advertising only in Ukraine, its implementation should be assessed together with a lawyer, taking into account personal data protection requirements.
Conclusion
Advertising without cookies does not mean advertising without targeting. It is an environment where some familiar signals are unavailable, and measurement quality depends on a combination of several technologies: your own data, proper consent, server-side event transmission and modeling.
No single tool restores all lost data. That is why the best strategy in 2026 is not to look for a single replacement for cookies, but to build a coherent system: quality customer data, reliable conversion transmission, accurate spend tracking and regular matching of advertising with real sales.
Advertising on several platforms?
Billing Media, as a billing partner, provides official advertising payments for Google Ads, Meta Ads, TikTok Ads, LinkedIn Ads and other platforms, as well as a full package of closing documents for each platform. This way, the finance department sees accurate advertising spend and can correctly calculate return on ad spend. Contact us: partners@billing.media
