Review Schema for Affiliate Sites After Google’s 2026 Rules

Review snippets — the star ratings that appear under a search result — are worth real click-through, which is why affiliate publishers chase them and why the space is full of bad advice.

Two things changed the picture. Google removed eligibility for self-serving reviews some years ago, and on 24 July 2026 it added an explicit prohibition on fake and undisclosed incentivised reviews. Meanwhile a practice that was never valid — marking up Amazon’s customer ratings as if they were your review — remains widespread because no validator complains about it.

Are affiliate sites eligible at all?

Yes, and this is worth being clear about because a lot of people have concluded otherwise.

The restriction people half-remember is about self-serving reviews: a business reviewing itself on its own site is not eligible for review-snippet features. That rule targets a company putting five stars on its own homepage. It has nothing to do with a publisher reviewing a third party’s product.

The mistake almost every affiliate site makes

Here is the one to check before anything else on this page.

Three separate problems with it:

• Structured data must represent visible page content. Those 3,812 reviews are not on your page. You are marking up something a reader cannot see.
• They are not your reviews. The markup asserts an aggregate that your site did not collect and cannot vouch for.
• It misrepresents the page in the results. A searcher seeing stars under your result reasonably reads them as your verdict.

No validator flags this, because the syntax is perfect. That is precisely why it survives — and it is exactly the class of problem the 2026 update was written for, since the guidelines now require a content audit rather than only a schema audit.

What changed on 24 July 2026

Google added an explicit prohibition to the review-snippet guidelines covering two things.

Two consequences worth internalising:

The rule reaches the page, not just the markup. The prohibition applies to your pages and your structured data. Removing the schema from a page of invented testimonials does not fix the page.

Free review units are now a schema question as well as an FTC one. If a manufacturer sent you the product and you marked up your review, the incentive must be disclosed clearly and prominently. Disclosure was already required under the FTC’s Endorsement Guides — see the disclosure requirements — but it now also determines rich-result eligibility.

Marking up a review correctly

The minimum honest version. A single review, by a named reviewer, of a specific product, with the rating visible on the page.

{
  "@context": "https://schema.org",
  "@type": "Review",
  "itemReviewed": {
    "@type": "Product",
    "name": "Example Cordless Drill 18V"
  },
  "author": {
    "@type": "Person",
    "name": "Sam Ortega"
  },
  "reviewRating": {
    "@type": "Rating",
    "ratingValue": 4.5,
    "bestRating": 5,
    "worstRating": 1
  },
  "datePublished": "2026-03-14",
  "publisher": {
    "@type": "Organization",
    "name": "Your Site"
  }
}

Four things that make this valid rather than merely well-formed:

• The rating is visible on the page. If 4.5 does not appear where a reader can see it, do not mark it up.
• The author is a real named person or your organisation. Not “Editorial Team” attached to nobody.
• itemReviewed is a specific product, named the way a reader would recognise it.
• The bounds are declared. bestRating and worstRating remove any ambiguity about what 4.5 means.

Roundups are the awkward case

A “best nine drills” page reviews nine products, and there is no single thing the page is about. Two workable approaches:

• Mark up nothing. Entirely acceptable. A roundup can rank perfectly well without a review snippet, and no markup is always safer than markup you are unsure about.
• Use ItemList for the list itself, and reserve Review markup for pages that genuinely review one product.

What not to do is pick the top product and mark the whole page up as a review of it. The page is not a review of that product; it is a comparison, and the markup would misdescribe it.

Seven mistakes that make a page ineligible

Is it worth doing at all?

A fair question, since review snippets are not guaranteed even when your markup is perfect — Google decides whether to show them.

Worth doing: on genuine single-product reviews where you have a real verdict. The markup is honest, it takes minutes, and stars in results do lift click-through when they appear.

Not worth doing: on roundups and comparisons, on pages where you would have to invent a rating to have something to mark up, and on any page where you find yourself reasoning about whether it is technically permitted. That hesitation is usually the answer.

If the goal is better rankings for affiliate pages generally, structured data is a small lever. Page speed and site structure are larger ones — see why product boxes slow your site and how to structure an affiliate site.

Common questions