Custom events are one of the most powerful ways to measure user interactions on your website—especially when default tracking doesn’t capture the actions that matter to your business. Whether it’s button clicks, form submissions, video views, or downloads, creating a custom trigger ensures you can optimize your campaigns with accurate data.

In this post, we’ll walk through the basic steps for:

1. Creating a custom event trigger in Google Tag Manager (GTM)
2. Sending that event to Google Analytics (GA4)
3. Importing the event into Google Ads for conversion tracking

Let’s get started.

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1. Create a Custom Trigger in Google Tag Manager

Most custom events begin in GTM, which listens for an interaction and sends data to GA4.

Step 1 — Identify the Event You Want to Track

Examples:

• Clicking a “Request a Quote” button
• Downloading a PDF
• Watching a video
• Submitting a form

You’ll use this action to decide which trigger type you need (Click trigger, Form Submission trigger, etc.).

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Step 2 — Create a Trigger in GTM

1. Go to Triggers → New
2. Choose the trigger type (e.g., Click – All Elements, Form Submission, File Download, etc.)
3. Configure conditions—e.g.,
   • Click Text contains “Request a Quote”
   • Page URL contains /thank-you
4. Name it clearly (example: Button - Quote Request)

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Step 3 — Create a GA4 Event Tag in GTM

Now that GTM knows when to fire, it needs to send an event to GA4.

1. Go to Tags → New
2. Select GA4 Event
3. Choose your GA4 configuration tag
4. Enter the event name (example: quote_request)
5. Add parameters if needed:
   • button_text
   • page_location
6. Assign the trigger you created in Step 2
7. Save

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Step 4 — Preview and Publish

1. Click Preview in GTM
2. Perform the action on your website
3. Confirm the tag fires correctly
4. If everything looks good, hit Submit to publish

Your custom event is now live.

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2. Register the Event in Google Analytics (GA4)

Once GTM sends events, GA4 needs to recognize them.

Step 1 — Check the Event in Realtime

Go to:

Reports → Realtime

Perform the action and confirm the event appears in the event list.

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Step 2 — Mark It as a Conversion

GA4 does not automatically treat custom events as conversions.

1. Go to Admin → Events
2. Find your event name
3. Toggle Mark as conversion

That’s it—GA4 is now tracking your custom event as a conversion.

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3. Import the Conversion into Google Ads

The final step is getting this conversion into Google Ads so it can optimize bidding.

Step 1 — Make Sure Google Ads and GA4 Are Linked

In Google Ads:

Tools → Linked Accounts → Google Analytics (GA4)
Connect your GA4 property if not already linked.

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Step 2 — Import the Conversion

In Google Ads:

1. Go to Tools → Conversions
2. Click New Conversion Action
3. Select Import → Google Analytics (GA4)
4. Choose the newly created GA4 conversion (e.g., quote_request)
5. Finish setup

It may take a few hours for the first conversions to appear.

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Final Thoughts

Setting up custom triggers gives you complete control over what actions you measure in Google Analytics and Google Ads. While the process involves several moving parts—GTM, GA4, and Ads—the steps are straightforward once you understand the workflow:

1. Track the interaction in GTM
2. Send it to GA4 as a custom event
3. Mark it as a conversion
4. Import it into Google Ads

With accurate conversion data, you can make smarter decisions and improve your campaign performance dramatically.