Google Signals changes on June 15 and Consent Mode becomes the only way to manage data flow between GA4 and Google Ads.
1 min read
What changed
Google Signals changes take effect June 15, 2026. Consent Mode becomes the single control point for data flow between GA4 and Google Ads.
The previous dual system (Google Signals plus Consent Mode running in parallel) is being consolidated into one unified framework.
Advertisers who have not implemented Consent Mode v2 will see gaps in their audience data and conversion tracking.
What it means
This is a compliance deadline with direct revenue impact. If your Consent Mode implementation is incomplete or misconfigured, your Google Ads remarketing audiences will shrink and your conversion attribution will degrade. For Australian businesses running Google Ads, this is not a privacy checkbox exercise. It directly affects how much data flows into your campaigns and how accurately Google can optimise your spend.
What to do
Check your current Consent Mode implementation in GA4 under Admin > Data Collection
Verify your cookie consent banner fires Consent Mode signals correctly (test with Google Tag Assistant)
Update to Consent Mode v2 if you are still on v1
Review your Google Ads audience lists for any consent-related warnings before June 15
Source: Google Analytics Help Centre and ceaksan.com (April 2026)