Link equity

Long definition

Link equity is the conceptual currency of off-page SEO. The original mathematical formulation is PageRank (Brin & Page, 1998): a page's rank is computed from the ranks of pages linking to it, divided by the number of outbound links each of those source pages carries. Modern Google has layered topical relevance, trust signals, anchor-text matching, and many other factors on top, so "link equity" is now an umbrella term covering all the authority a link can transfer — not just classical PageRank.

The mechanics of equity flow:

• Source authority matters — a link from a highly-cited domain transmits more equity than a link from an obscure one.
• Outbound link count divides equity — a homepage with 200 outbound links transfers less per link than a page with 5.
• Topical relevance modulates — a link from a tightly-related page in your niche carries more weight than an off-topic one.
• Anchor text shapes the signal — equity flows with relevance hints attached.
• Position on the page matters somewhat — links in main content typically count more than footer links.
• rel attributes throttle flow — nofollow, sponsored, and ugc reduce or block equity transfer.

A working metaphor: each ranking page has a quantity of authority, and outbound links pour some of it into target URLs. Internal links redistribute equity within your own site (architecture decisions matter for that reason). External backlinks pour in new equity from outside.

The term "link juice" was popular in the 2000s but is rarely used in serious analysis today — vendors and Google itself prefer "link equity" or "ranking signals." The change tracks the field's maturation: it's no longer a single-variable game.

PageRank sculpting — using nofollow to redirect equity within your own site — stopped working in 2009. Google now divides equity across all outbound links regardless of rel attributes; the nofollowed links just don't pass their share. The lost equity isn't redistributed to followed links.

Common misconceptions

• "Link equity is the same as PageRank." PageRank is one specific algorithm. Link equity is the broader concept that includes topical authority, trust, anchor relevance, and other signals on top of raw PageRank flow.
• "More outbound links always hurts your SEO." Linking generously to authoritative sources is itself a quality signal. The dilution effect is real but small for editorial content. Hoarding equity by avoiding outbound links is counterproductive.
• "Internal links don't carry equity." They do — that's why site architecture matters. Internal linking decides which of your pages accumulate authority. A well-linked-to internal page can outrank weakly-linked external sites.
• "301 redirects pass 100% of equity." Google has stated since 2016 that 301s pass full equity (no longer the ~85% of older lore). Chains of redirects, however, can dilute the signal — and they always slow crawling.