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How do I set up a custom event in Google Tag Manager for GA4?

Asked on Nov 12, 2025

Answer

To set up a custom event in Google Tag Manager (GTM) for Google Analytics 4 (GA4), you need to create a new tag that sends event data to your GA4 property. This involves configuring the tag with the appropriate event parameters and triggers.

<!-- BEGIN COPY / PASTE -->
    1. In GTM, click "Tags" and then "New".
    2. Choose "Tag Configuration" and select "Google Analytics: GA4 Event".
    3. Enter your GA4 Measurement ID.
    4. Set "Event Name" to your custom event name (e.g., 'custom_event').
    5. Add any additional parameters needed for your event.
    6. Set a trigger to fire the tag (e.g., "All Pages" or a specific button click).
    7. Save the tag and publish your container.
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure your GA4 Measurement ID is correctly set up in GTM under "Variables" for easy reuse.
Test your tag using GTM's "Preview" mode to verify that the event fires as expected.
Check your GA4 property under "Reports → Engagement → Events" to confirm event data is being collected.

✅ Answered with Analytics best practices.

Ask any question about Analytics & Tracking here... and get an instant response.

How do I set up a custom event in Google Tag Manager for GA4?

Asked on Nov 12, 2025

Answer

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