Google’s Universal Cart goes live in US Search and Gemini. YouTube and Gmail wait

Google started rolling out Universal Cart in the United States on 15 October 2026, according to a post on its Keyword blog by Suresh Ganapathy, senior director of product management for consumer shopping. The Google Universal Cart works in Search, including AI Mode, and in the Gemini app. Google first showed it at its I/O conference on 19 May and had aimed for a summer launch.

Google’s cart keeps items from Nike, Target and Walmart in one list

Shoppers can save products from different stores in one cart. The cart stays with them across Google, so an item saved in Gemini is still there in Search. Google sends alerts when a price drops or a product is back in stock. It says the data comes from its Shopping Graph, which holds more than 60 billion product listings.

The cart also reads card perks from Google Wallet and suggests which card to use. It shows promo codes. At checkout, people can pay with Google Pay in a few taps at supported stores, or move the items to the store’s own cart. Google names Nike, Sephora, Target, Ulta Beauty, Walmart, Wayfair and “many Shopify merchants”. The store stays the seller and handles order emails and support.

YouTube and Gmail are missing from the October launch

In May, Google said the cart would also work in YouTube and Gmail. The October post names only Search and Gemini, PPC Land noted. Price history and product compatibility checks, also shown in May, are not mentioned either.

Both checkout paths run on the Universal Commerce Protocol, or UCP, an open standard Google published in January with Shopify, Etsy, Wayfair, Target and Walmart. We covered the UCP update that added grocery and 3D Secure earlier this year. According to Google’s merchant help pages, cited by PPC Land, a store needs UCP version 2026-04-08 or later and a UCP profile file on its site to accept cart transfers. Google decides which stores join.

Shopify stores were switched on by default in September

PPC Land reports that from 18 September Shopify matched its merchants to Google Merchant Center accounts and turned the feature on. Stores that wanted to keep checkout on their own site had to opt out. Shopify has made similar moves before, such as bringing Shop Pay checkout into Meta’s Muse.

Google has not said what it charges stores, how it ranks promo codes or which shopper data it passes to the store. In May, Google’s Nick Fox would not confirm plans for ads inside the cart.

The rollout covers the US only. A Google help page from 6 October moved Canada and Australia to 2027. The UK is due later, and there is no date for the EU. European merchants that sell to US shoppers through Shopify can check now whether their store was switched on in September, and decide if checkout should stay on their own site.