How to Enable Ecommerce Data Layer in Squarespace Store with GTM

Introduction

Tracking ecommerce events like purchases is essential for understanding user behavior, optimizing ads, and improving your Squarespace store’s performance. Unfortunately, Squarespace does not natively support GA4 Ecommerce tracking via Data Layer.

This guide shows you how to implement a custom ecommerce data layer in Squarespace using Google Tag Manager (GTM)—100% free and without any third-party plugin.

Prerequisites

Make sure the following are in place before you begin:

A live Squarespace Commerce website
Google Tag Manager container installed site-wide
GA4 property already set up
Access to Order Status Page HTML
Basic GTM & JS understanding (helpful but not required)

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Step-by-Step Setup

Step 1: Add Google Tag Manager to Squarespace

Go to Squarespace Dashboard → Website → Settings → Advanced → Code Injection
Paste your GTM tracking script inside the <head> field
Click Save

Step 2: Add item data Layer to the Squarespace footer

Go to Squarespace Dashboard → Website → Settings → Advanced → Code Injection
Insert the item data layer script inside the <footer> field
Click Save

Step 3: Add Purchase Data Layer to the Order Confirmation Page

Navigate to: Squarespace Dashboard → Settings → Checkout → Order Confirmation Page
Insert this script:

Frequently Asked Questions (FAQs)

Q. Can I track multiple items?
Yes. The ecommerce.items array handles multiple items.
Q. Is this method free?
Yes, fully free using Squarespace + GTM.
Q. Can I track add-to-cart or checkout steps?
Yes, We can track all the ecommerce events
Q. Does this work with Universal Analytics (UA)?
No. UA is deprecated. This is for GA4 only.

Conclusion

By completing this guide, you’ve enabled a fully functional ecommerce data layer in Squarespace. You can now reliably fire GA4 purchase events—essential for conversion tracking, ad optimization, and informed marketing decisions.

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