How long does a 301 take to pass value, and does any leak?
- Published November 6, 2026
- Linked from 2 answers
- In a cluster of 51
There is no fixed timeline: a 301 takes effect as Google recrawls the old URL and reprocesses the change, which happens sooner for a page Google visits often and later across a large set of URLs. On leaking, Google answers the question directly in its site move guidance: “301 and other permanent redirects don’t cause a loss in PageRank.” What does cost you is a redirect that points to the wrong place, sits in a chain, or is removed too early.
What sets the timeline
Google’s site move guidance ties the speed to two things: “The speed at which Googlebot and our systems discover and process moved URLs largely depends on the number of URLs and your server speed.” For a medium-sized site, the guidance puts the switch from old URLs to new ones in search at a matter of weeks, and longer for large sites. A single redirected page is a smaller job, but it still waits for its next crawl.
The same guidance sets the minimum lifespan of the redirect: keep redirects “for as long as possible, generally at least 1 year.” Removing a redirect early returns the old URL to a 404 or to stale content, and any links still pointing at it stop reaching the new page.
Where the “leak” idea goes wrong
The belief that every 301 bleeds a set share of authority runs against Google’s own wording. The site move guidance files it under “Don’t worry about link credit”, and Google’s guidance on consolidating duplicate URLs lists redirects as a strong signal for which URL should be canonical, alongside rel="canonical". A claim that a 301 passes some exact share of value, such as a fixed percentage, has no source in Google’s documentation.
Value does get lost in specific, avoidable ways:
| Problem | What happens |
|---|---|
| Redirect to an unrelated page | Google may treat it as a soft 404, so the old page's standing does not carry over |
| Long chain of redirects | Each hop adds a request and latency, and Google's crawlers stop following after a default limit |
| Redirect removed within months | The old URL stops forwarding visitors and links |
| Internal links left on the old URL | Your own site keeps sending crawlers and users through the redirect |
How to give a 301 its best chance
Send the old URL in one hop to the page that best replaces it, update internal links and the sitemap to the new URL, and leave the redirect in place for at least a year, longer if old links still bring visits. For the rankings side of the same wait, go to what happens to rankings when you 301 a URL. Judge the result on the target’s queries after Google has recrawled both URLs, not on the first few days.
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