Google Signals will lose authority over ad data collection on June 15. Consent Mode becomes the single control point for GA4 and Google Ads.
1 min read
What changed
From June 15 2026, Google Signals will no longer control ad data collection in GA4
Consent Mode becomes the single control point governing how both GA4 and Google Ads collect and use data
This merges two previously separate data control systems into one
What it means
If your Consent Mode implementation is wrong, incomplete or missing, you will lose ad personalisation signals, audience data and conversion modelling across both GA4 and Google Ads simultaneously. This is not a cosmetic change. It affects how much performance data Google will collect, model or withhold from your campaigns. Australian businesses that have been relying on Google Signals as their primary consent mechanism need to act before June 15.
What to do
Check your Consent Mode implementation now. Verify it fires correctly for both analytics and ad storage consent types
Test with Google Tag Assistant to confirm consent states are passing through correctly
Review your cookie consent banner to ensure it meets the "reject must be as easy as accept" standard regulators are enforcing
Update your GA4 property settings to reflect the new unified data control before June 15
Source: PPC Land, ceaksan.com (April 2026)