What's the average retention rate for an SEO company?
A trustworthy average for SEO companies specifically is hard to find. One research firm that surveys agency leaders on this topic notes on its page about client retention: “We have not published an average retention rate for SEO agencies, and we publish only what we measured.” What you can use instead is a measured picture of how long agency clients stay in general, and the figures an SEO company gives you about its own clients, as long as you know how those figures were counted.
What has been measured
The same research firm asked 165 agency leaders how long their average retainer engagement lasts. It reports that “42% of agency leaders reported average retainer tenures above two years, and 30% reported an average above three years. About a quarter reported typical retainer engagements under one year.”
Two limits apply to those numbers. They cover agencies of all kinds, not SEO companies alone, and they are what agency leaders reported about their own businesses. They are useful for one thing: when an SEO company tells you how long its clients typically stay, you can see where that answer sits against a measured spread, rather than against a percentage nobody can trace.
Why a retention figure needs a definition
A retention rate can be counted in several ways, and the choice changes the number. It can count clients or revenue. It can cover one year or several. It can treat a paused contract as retained or as lost. It can count a client who moved from a retainer to occasional projects either way. Two companies quoting the same percentage may be describing very different things.
So the first question about any figure is how it was calculated and over what period. A company that tracks retention will be able to answer that in a sentence.
Why a single number can mislead in either direction
A low figure does not prove poor work. Clients leave for reasons unrelated to results: budgets are cut, the business is sold, the work is brought in-house, or priorities change. A high figure does not prove good work either. Long contracts with costly exits keep clients on the books whether they are satisfied or not, and a young company may simply not have had clients long enough to lose them.
What a figure can tell you depends on the explanation behind it. Ask why clients stay, and why the ones who left did so.
How long the work needs to run
Engagement length is the same question seen from the other side. The useful version for your own business is not how long the average client stays, but how long the work needs to run before it pays for itself in your case, and whether you would keep paying to protect the result after that. A company should be able to answer the first part for your site, with its reasoning, before you sign.
Testing a retention claim
- How long does your typical client stay, and how long have your longest-standing clients been with you?
- How do you calculate retention: by client or by revenue, and over what period?
- What are the most common reasons clients leave you?
- Can I speak to a client who has worked with you for more than a year?
The last question carries the most weight. A client who has renewed for years has, in effect, rehired the company many times, and can tell you what that looked like from the inside.