Google’s Universal Cart goes live in the US – what brands should know
Universal Cart launches in the US on Google Search and Gemini. Learn the core capabilities and how merchants can start preparing.
Google announced that its Universal Cart is now live in the United States on both Google Search and the Gemini app. The feature lets shoppers add items from multiple retailers into a single cart, receive price‑drop and stock‑replenishment alerts, and complete checkout either with Google Pay or by being transferred to the merchant’s site.
While the launch is U.S.-only for now, the underlying APIs and merchant‑center integration hub are being prepared for other markets, including Australia and Canada later.
What Universal Cart actually does
- Creates a single cart that can hold products from different retailers accessed via Search or Gemini.
- Sends alerts when a saved item drops in price or comes back in stock.
- Offers two checkout paths: native checkout within Google (using Google Pay) or cart transfer that pre‑fills a merchant’s website cart.
- Uses Google Wallet to suggest the shopper’s preferred payment card and surface applicable promo codes.
Technical basics for merchants
Google ties the cart‑transfer option to the Cart API in the Universal Commerce Protocol (UCP). The API currently supports only cart creation and transfer – updating, deleting, or syncing cart contents between Google and the merchant’s system is not yet available. Merchants that meet Google’s onboarding requirements can enable the option in the UCP integration hub inside Merchant Center.
The hub is rolling out gradually in the U.S., with Australia and Canada slated to follow next year. The UCP Analytics Reporting dashboard in Merchant Center records metrics such as the number of cart transfers and the average cart value at transfer, but it does not yet capture items saved without a transfer.
Implications for merchants
Brands that sell on Google Shopping should:
- Review the UCP integration documentation now and map it against your current checkout flow.
- Ensure your product feed includes accurate pricing, availability and any promo‑code data that Google Wallet can surface.
- Test the cart‑transfer flow on a U.S. sandbox or with a partner merchant to understand the hand‑off experience.
- Consider how native checkout via Google Pay could fit into your payment strategy, especially for mobile‑first shoppers.
What to do now
Our recommendation is to start preparing today rather than waiting for the feature to arrive in other markets.
- Audit your Merchant Center settings and confirm you’re enrolled in the Universal Commerce Protocol.
- Work with your development team to build the CreateCart call required for cart transfer.
- Align your Google Ads campaigns with the new checkout options – for example, use “Buy” extensions that point to the Universal Cart flow.
- Monitor Google’s announcements for any rollout timeline updates for additional regions.
If you need help integrating the UCP API or adapting your Google Ads strategy to the new checkout paths, our Google Ads Management service can guide you through the technical and campaign‑level changes.
The services behind this post.
Frequently asked questions.
No. The launch is limited to the United States on Google Search and the Gemini app. Google’s rollout plan mentions Australia and Canada next year, but it has not confirmed an Indian launch yet.
Talk to the team that does this every day.
Tell us what you're trying to grow. You'll get a plan, not a pitch.
Contact Us