How to Setup GA4 Using Google Tag Manager (GTM)

A Step-by-Step Guide: Set Up GA4 Using Google Tag Manager (GTM)

Step 1: Prerequisites — Make Sure You Have

• A working Google Tag Manager setup on your website
  
• Access to your Google Analytics account
  
• Your GA4 Measurement ID (starts with G-XXXXXXX)

Retrieve from Admin > Data Streams > Copy the Measurement ID

Step 2: Log In to Google Tag Manager 

Need to setup GTM Website Container? Click Here

1. Go to https://tagmanager.google.com
   
2. Select your website container
   

Step 3: Add Your GA4 Configuration Tag

1. In the GTM workspace, go to Tags > New
   
2. Click Tag Configuration
   
3. Select Google Analytics: GA4 Configuration
   
4. Paste your Measurement ID (from your GA4 property)
   
   • You can find it by going to:
     Google Analytics > Admin > Data Streams > Web > Measurement ID
     
5. Leave other settings as default unless you need advanced options
   
6. Scroll to Triggering
   
   • Choose All Pages
     
7. Click Save
   

Step 4: Publish Your Container

1. In GTM, click Submit
   
2. Add a version name (e.g. “GA4 Install”) and description
   
3. Click Publish
   

Step 5: Test Using Tag Assistant

1. Open https://tagassistant.google.com/
   
2. Click Start, enter your website URL, and click Connect
   
3. Browse your site in the new tab
   
4. Return to Tag Assistant to verify that your GA4 Configuration tag is firing on page load
   

Step 6: Check in GA4 Real-Time Reports

1. Go to https://analytics.google.com
   
2. Click Reports > Real-time
   
3. Open your website in a separate tab
   
4. You should see your visit appear in real-time — confirming it’s working
   

Step 7: (Optional) Track Key Events via GTM

To track custom interactions like contact form submissions, phone clicks, or scroll depth:

1. In GTM, create a New Tag > choose GA4 Event
   
2. Configure:
   
   • Event Name (e.g. form_submit, click_call, etc.)
     
   • Link to your GA4 Configuration Tag
     
3. Add Triggers based on user interactions (e.g. element clicks, form views)
   
4. Save and publish your container
   
5. Go to GA4 > Configure > Events and mark important events as Conversions