SEO Agency vs In-House SEO Team: Which Is Better for Growing Businesses?

Somewhere around year two, most founders run into the SEO agency vs in house SEO question. You are paying an outside team every month, and a job post for an SEO manager looks like it would cost roughly the same. So why not hire someone who works only on your site? On paper the salary route often looks cheaper.

It usually isn’t. The salary is the smallest surprise. Benefits, tools, writers, developer time and the months a new hire spends learning your business all sit on top of it. Below we put both options into real numbers, walk through one full year for a 40 person company, and show you the point where hiring in-house does start to make sense. Because sometimes it does.

One honest note first. We are GAP3, a web and digital marketing agency in Ahmedabad, India, and we sell SEO retainers. So yes, we have a side. We have tried to keep the math fair anyway, and where the numbers favor hiring, we say so.

SEO agency vs in house SEO at a glance

Before the math, here is how the two options differ on the things founders and CMOs actually ask us about. Neither column wins every row, and that is the point.

Cost rows use BLS wage and benefit data and the Ahrefs survey of 439 SEO providers. Details below.

What an in-house SEO hire really costs

Start with salary. The BLS wage data shown on O*NET for search marketing strategists puts the 2025 US median at $78,760 a year. A senior person, or someone in New York or San Francisco, will cost a lot more. A junior hire costs less, but then you are paying someone to learn on your site.

Now add benefits. The Bureau of Labor Statistics tracks this. Its June 2026 Employer Costs for Employee Compensation release says wages are only 70.0% of what a private employer pays out per worker. The rest, 30.0%, goes on health cover, paid leave, retirement and payroll taxes. Easy shortcut: take the salary and divide by 0.70. Our $78,760 hire becomes about $112,514.

Then the tools. One person still needs a research suite and a crawler. Ahrefs lists its Standard plan at $249 a month billed monthly, and a Screaming Frog SEO Spider licence is $279 a year. That is $3,267 a year for a lean setup. Plenty of teams pay for more.

That writing line is the one people forget. A single SEO can plan content and edit it, but they can’t also write four long articles a month, fix your templates and chase links. Something gives. Usually it is the writing, so you end up hiring freelancers anyway.

And there is the time you can’t put in a spreadsheet so easily. Recruiting takes weeks. A good hire then spends their first few months auditing the site, learning the product and working out who in the building can actually ship a change. You pay full salary through all of it.

What a search engine optimization agency costs

The best public data we know of is the Ahrefs SEO pricing survey of 439 SEO providers. Agencies averaged $3,209 a month on retainer. Consultancies came in at $3,250, and freelancers at roughly $1,349. Local SEO, the kind a dentist or a roofer needs, averaged $1,557 a month.

For that fee, a decent search engine optimization agency brings its own tools, a strategist, someone who handles technical fixes and usually some content. You don’t pay benefits and you don’t pay for the weeks nobody is working. If the person on your account quits, that is the agency’s problem to solve, not yours.

What the retainer doesn’t cover matters too. Someone on your side still has to approve pages, answer questions about the product and get fixes live on the site. A $3,209 retainer also won’t buy you a lot of writing. If you want four long articles a month, expect the agency number to go up as well. We broke down how retainers, hourly rates and project fees work in our guide to digital marketing agency pricing in the USA, if you want the wider picture.

One year of SEO, both ways: a worked example

Here is the comparison for a made up but pretty typical business. The numbers come straight from the sources above, and where we had to assume something we say so.

Two caveats, because this math can be pushed around. If you need a senior hire, the in-house number jumps well past $150,000. If your site needs heavy content and link building, the agency retainer can pass $10,000 a month too, and then the gap closes. The break-even figure is the one to keep in your head when you run the SEO agency vs in house SEO math for your own company. Honestly, it is more useful than either total.

What one person can cover, and what they can’t

SEO is really five or six jobs sharing one name. An agency spreads them across people. A single hire has to be decent at all of them, and almost nobody is.

Look at the last row. Neither option ships fixes on its own if nobody can change the site. An in-house SEO with no developer time turns into someone who writes tickets that sit in a backlog. We see this a lot. If you want to see how much technical work is waiting on your site, our technical SEO checklist is a good place to start counting.

When in-house SEO is the better call

We would tell a client to hire in-house when most of these are true.

• Your site is large, with thousands of product or listing pages, and small template changes move real revenue.
• Organic search is your main growth channel, not one channel among five.
• You would already be spending more than about $10,000 a month with an agency to cover the work.
• Your product changes every few weeks, or you work in a regulated field where every page needs sign off. Someone inside hears about it first.
• You already have writers and developers who can take direction from an SEO lead.

If only one or two of those fit, a hire tends to become a lonely generalist. They will be busy. They just won’t have enough hands.

The hybrid setup most growing businesses end up with

The answer for a lot of companies between startup and mid market is both. One person inside owns SEO as a priority, and an agency does the specialist work around them.

There are two common versions. In the first, the internal owner is a marketing manager who isn’t an SEO expert. The agency sets strategy and does the work, and the manager makes sure things get approved and shipped. In the second, you hire a real SEO lead and use an agency for execution: on-page SEO, technical fixes, content production and links. The lead keeps the roadmap and holds the agency to it.

The second version works better as you grow. It goes wrong when the internal person is junior and the agency quietly fills the gap with easy deliverables that look busy in a report. Somebody on your side has to be able to say “that isn’t what we need.”

US agency, offshore agency or freelancer

If you decide to outsource, there is a second choice to make: who. We are an offshore team, so read this section knowing where we stand.

A freelancer is great value for a well defined job and a risky place to put your whole search program. A US search engine optimization agency earns its premium where local knowledge or face to face work matters. Offshore teams do well on the execution heavy parts of SEO, as long as the setup is right. We wrote about the same trade off for web builds in development company vs freelancer, and most of it carries over.

Here is how GAP3 handles the usual offshore worries. US clients are billed in dollars. Calls fall in a daily window that overlaps EST and PST mornings. Every retainer starts with a written scope and a fixed, itemized quote, you see progress in a weekly demo, and we reply within one business day. The senior people who scope your work are the same ones who do it. You can read about how we work with clients abroad or browse our recent work. We have delivered more than 140 projects over 9 years and hold a 5.0 rating from more than 40 Google reviews.

Red flags on both sides

Bad agencies exist. So do bad hires. Watch for these before you sign a contract or an offer letter.

• An agency that promises a number one ranking. Google’s own page on whether you need an SEO says plainly that no one can guarantee a #1 ranking on Google.
• Your Search Console, analytics or content sits in the agency’s accounts. Everything should be in your name from day one.
• Monthly reports that show rankings and traffic but never leads, demos or sales.
• A twelve month lock in with no exit clause, asked for before any work has started.
• Hiring one junior SEO and expecting the output of a department.
• Hiring an SEO before you have any developer time for them. Their fixes will wait in a queue for months.
• Nobody inside the company who owns SEO, whichever route you pick.

Google’s same page lists questions worth asking anyone you hire, like what results they expect and in what timeframe, and how you will communicate. Use them in agency calls and in job interviews. It also helps to know where your site stands first. Our free site audit tool on MyToolStudio crawls your site for broken links, missing titles, schema and speed issues, so you walk into either conversation with facts.

When not to hire either one

Sometimes the right answer is to wait. If you are still testing whether people will pay for your product, SEO is slow feedback. Paid search tells you in weeks what SEO tells you in months.

If you can only spend a few hundred dollars a month, an agency can’t do much with it and a hire is out of reach. Do the basics yourself. Claim the Google Business Profile. Give each page a title that says what it is. If the site is slow, fix that. Plenty of small local shops with a handful of competitors get a long way on just that. If you need help later, focused local SEO services cost a fraction of a full program.

And if nobody can change your website, don’t hire anyone yet. Fix that first. Every SEO plan ends in changes to the site.

When you are ready, our SEO services page shows what a retainer with us covers, so you can line it up against a job description.

Frequently asked questions

Is an SEO agency cheaper than hiring in-house?

For most growing businesses, the agency is cheaper. A median SEO salary of $78,760 costs about $112,514 once benefits are added, while the average agency retainer in the Ahrefs survey was $3,209 a month, or $38,508 a year. In-house only catches up when you would be paying an agency about $10,000 a month or more.

How much does an in-house SEO specialist cost in the US?

The BLS median for search marketing strategists was $78,760 in 2025. Benefits add roughly 43% on top, because BLS data shows they are 30.0% of total employer cost. Add tools and some freelance writing and one hire lands somewhere around $130,000 in year one.

How much does an SEO agency cost per month?

Ahrefs surveyed 439 SEO providers and found agencies averaged $3,209 a month on retainer, with local SEO averaging $1,557. Bigger programs with lots of content and link building often cost several times that. Always ask what gets delivered each month.

When should a company bring SEO in-house?

When organic search is your main channel, your site is large, and you would need more than about $10,000 a month of agency work to cover it. It also helps if you already have writers and developers an SEO lead can direct.

Can I use an agency and an in-house SEO together?

Yes, and plenty of growing companies do. Usually one person inside owns the roadmap and the agency handles technical work, content and links. It only works if the internal person is senior enough to push back on the agency.

How long before SEO shows results?

Honestly, give it four to six months either way before you decide if it is working. With a new hire, add a bit more, since they spend the first stretch learning the site and the product. Treat anyone who promises rankings within weeks with suspicion.

Should a US company use an offshore SEO agency?

It can work well for technical SEO, on-page work, content and reporting. Check for working hours that overlap with yours, billing in US dollars, and US clients you can actually look up. Make sure every account stays in your name.