What is topical authority?
Definition
Topical authority is the trust a site earns for a subject by covering it thoroughly and accurately, so engines treat it as a reliable source on that topic.
Topical authority is an industry term, not a Google metric you can look up. It describes an outcome: a site that has published complete, accurate, well-connected coverage of a subject tends to rank for more of the searches in it than a site with one excellent page and nothing around it.
It is built, not claimed. That means mapping the subtopics and questions a subject contains, publishing pages that answer them properly, linking those pages into clusters, and keeping them current. It also means staying in your lane: a local plumber builds authority in plumbing and in their city, not in every home-improvement topic that might bring traffic. Depth in one subject beats thin coverage of many, and it accumulates slowly enough that competitors cannot copy it quickly.
Why does it matter to your business?
It is the reason a cluster of good pages outperforms the same number of disconnected posts. It is also a moat: authority built over months is hard for a competitor to match in weeks.
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Last reviewed September 11, 2026 by Joseph Nicholas Abear.
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