Why is Google Ads conversion tracking not working on Shopify?
If Google Ads conversions are not showing on Shopify, the cause is usually a setup that was left half finished. A clash between the Google & YouTube app and a manual tag, restricted access to the checkout page, cookie consent blocking the tag and orders from other channels not being counted are the four most common reasons.
Conversion tracking on Shopify can be set up in three different ways, and in most stores two of them are active at the same time. The result is either double counting or no counting at all.
First establish which method is installed. Every fix made without knowing that is a guess.
Three setup routes and how they differ
Method | Advantage | Common problem |
|---|---|---|
Google & YouTube app | Easy to set up, automatic | Clashes with a manual tag and produces double counting |
Customer Events (Pixel) | Sees the whole flow including checkout | A code error stops it working silently |
Google Tag Manager | Full control | Access to the checkout page is limited by plan |
1. Two setups are active at once
This is the most common cause. If the Google & YouTube app is installed while a conversion tag added by hand still sits in the theme files, the same order is counted twice.
The symptom is clear: the Google Ads conversion count is roughly double the Shopify order count. When this happens the bid strategy also learns the wrong thing and overspends.
Check whether Google & YouTube is installed in your app list
Look for a manual tag in the theme files and in Customer Events
Remove one of them, do not run both
2. There is no access to the checkout page
On Shopify's standard plans the checkout page is locked and scripts cannot be added directly. That is why the classic conversion tag placed on the thank-you page does not work.
The answer is to listen to the checkout_completed event through Customer Events. That is the correct route and it is supported on every plan.
After the move to Checkout Extensibility, the old script methods quietly stopped working. If your conversions dropped to zero on a specific date, this is most likely the reason.
3. Cookie consent and Consent Mode
Cookie banners installed for data protection compliance block marketing tags until consent is given. If Consent Mode is not configured, conversions from users who do not consent disappear entirely.
Consent rates commonly sit between 60 and 80 percent. The share of conversions that go unmeasured is therefore not trivial.
4. Orders from other channels
The Shopify order count is always higher than the Google Ads conversion count, because some orders come from organic search, direct traffic, email or social channels.
That is not an error. Make the comparison against sessions originating from Google Ads rather than against total orders.
Order of verification
Establish which setup method is active in the Shopify admin
Remove the second setup if there is a clash
Place a test order with Tag Assistant and confirm the tag fires exactly once
Run a second test refusing cookie consent and observe the behavior
Compare the Google Ads conversion count with the Google Ads sourced order count in Shopify
Enable enhanced conversions to raise the match rate