Google Seller Rating
A Google seller rating is a merchant-level star score, shown out of five, that Google compiles from approved review sources and displays next to your business across Search ads, Shopping, and the Google Customer Reviews badge, rating the store as a whole rather than any single product.
A seller rating describes the merchant, not the product, which is the key distinction from a product rich snippet. The product star rating you see on an organic listing comes from review markup on one product page; the seller rating aggregates how people rate buying from your store overall, so it can appear even on pages that sell nothing in particular. It surfaces mainly on Google Ads text and Shopping ads, in the Google Customer Reviews badge, and within some Shopping surfaces.
To earn one, Google needs enough recent ratings from sources it trusts, which include Google Customer Reviews, a set of approved third-party review partners, and Shopping reviews. Google generally looks for a minimum volume of reviews over a rolling window and a rating above a quality threshold before it will show the stars, and it controls when they appear; you cannot simply mark up a number and force it to render.
Getting the reviews you already collect to count toward this rating is often the real work, since they have to live with an approved source and be readable by Google rather than locked inside an app widget. Getting existing reviews corroborated and citable by search is the gap BetterReviews is built to close.