Google AI Mode checkout is now switched on for eligible Shopify stores, and most merchants did not choose it. On September 22, Google started emailing Merchant Center users to say their Shopify store had been matched to their Merchant Center account, enabling native checkout in Google AI Mode and Gemini, as Search Engine Roundtable reported. Shoppers can now buy your products inside Google's AI answers without landing on your site. For a brand spending real money on ads, the bigger issue is not the sale. It is that your analytics will not see it.
What actually changed
Checkout inside AI Mode has existed since February, but only for a limited group of merchants. According to Search Engine Roundtable, Google pushed it out to more retailers on Friday, September 18, and the emails that followed told merchants eligible products are "automatically included." There is nothing to set up. If you do not want it, you have to turn it off.
Shopify's own help page for selling on Google AI Mode and Gemini confirms it: direct checkout is "activated by default for eligible stores." The customer clicks Buy, enters shipping and payment details in a Shopify-powered checkout inside the chat, and pays without visiting your online store. Shopify says there are no extra fees beyond your standard payment processing.
Who is eligible, per Shopify:
- Your store is based in the United States and sells to US customers.
- Your products are in Google Merchant Center, either through the Google & YouTube sales channel or a feed tool.
- Your terms of service, privacy policy and refund policy are filled in under Settings, Policies.
Shopify also says the direct checkout is only shown to shoppers in the US. Everyone else can still discover your products and gets sent to your site to buy.
One note for our Australian readers. Elsop, which compared the two companies' help pages, found that Google's Merchant Center documentation lists the US, Canada and Australia as eligible countries while Shopify limits it to the US. Neither company has explained the gap. For now, treat this as a US change, but check your Shopify admin anyway and look again monthly.
Why this is an ad account problem
Here is the line from Shopify's documentation that matters most: Google Analytics and custom pixels "won't fire" in the AI Mode and Gemini checkout. It fires only server-to-server pixels for two events, checkout started and checkout completed. None of the standard or custom client-side pixels fire.
What that does downstream:
- GA4 misses the sale. If you import GA4 purchases into Google Ads as your conversion action, Smart Bidding will not see these orders either.
- Browser-based pixels miss it too. Any tracking that depends on a script running in the shopper's browser on your checkout has no page to run on. What reaches your ad platforms through server-side connections is a separate question, and neither Google nor Shopify has documented it in detail. We are not going to guess.
- Your reported ROAS can drift from your real revenue. If a meaningful share of shoppers start buying inside AI Mode, platform dashboards could show weaker results while Shopify shows orders holding steady. The risk is cutting campaigns that are working because your numbers no longer see the whole picture.
We do not know yet how much volume this will drive. Nobody has published numbers, and Elsop notes that no source has said how these orders are labelled once they land in a store's admin. That uncertainty is the reason to set up a check now rather than after the numbers look strange.
What else does not come across
Shopify is clear that the AI Mode checkout is a stripped-down version of yours. According to its help page:
- Not supported: subscriptions, product bundles, customisable products, B2B-only products, local delivery, pickup in store and pickup points.
- May not display: checkout blocks for upsells and add-ons, loyalty and rewards, custom fields, trust badges and reviews, and blocks that collect consent for data use and communication preferences.
- Still works: automatic discounts, discount codes and Shopify Functions for shipping, discounts and checkout validation.
That consent point is worth pausing on. If your checkout is where most customers tick the box to join your email or SMS list, orders placed inside AI Mode may not grow that list. For brands that make their margin on repeat purchases, that is a real cost that will not show up in any ad report.
Should you keep it on or turn it off?
There is no universal answer, and we are not going to pretend there is. A simple catalogue, no reliance on checkout upsells, and a strong server-side tracking setup make keeping it on easy to justify: it is another place to get a sale, at no extra fee. If your economics depend on checkout upsells, email capture at checkout or bundles, or if your reporting leans heavily on GA4, turning it off keeps buyers on your own checkout while still letting your products show up in AI Mode. Shopify confirms that opting out does not remove you from discovery.
What we do not recommend is leaving it on by default because nobody looked.
What to do this week
1. Check whether it is on. In your Shopify admin go to Sales channels, then Agentic. Shopify's steps: deactivate "Allow Shopify to manage for me," click Google AI Mode and Gemini, then turn Direct checkout on or off and save. Also check the inbox tied to your Merchant Center account for Google's email.
2. Make the decision on purpose, and write the date down. Whatever you choose, log it with your other account changes so a dip in GA4 purchases next month has an explanation.
3. If you keep it on, tidy your feed. Shopify asks merchants to keep product data and store policies, including the refund policy, in sync between Shopify and Merchant Center, and to put any legal disclosures in the first 6,000 characters of product descriptions. With the Google & YouTube channel, turn on automatic product and shipping sync.
4. Reconcile Shopify against GA4 every week. Compare total orders and revenue in Shopify with GA4 purchases for the same days. A widening gap after this date is your signal that off-site checkout is taking a share. Use Shopify as the source of truth for revenue, not the ad dashboards.
5. Judge campaigns on blended numbers for now. Look at total revenue against total ad spend alongside platform ROAS before cutting anything. We wrote about why platform ROAS and actual profit drift apart in your ROAS looks fine, so why isn't the business making money?
The honest summary
This is not a disaster, and it may bring in extra sales. But Google made the decision for you, in a way your standard tracking cannot see. Five minutes in Shopify admin and a weekly reconciliation habit will stop you making budget calls on half the data.
Whether your reported conversions match what is really landing in your Shopify admin is one of the first things we check in our free 15-point Profit Audit: tracking accuracy, what your bidding is actually being fed, and where your reported numbers drift from reality. Thirty minutes, and you keep the findings either way.