A modest in-house SEO team — two specialists and one content writer — runs £120,000 to £140,000 per year before anyone publishes a word. That figure comes from Dan Wiggins' 2025 breakdown in In-House vs Outsourced SEO: What's the Best Value in 2025?, and it is the conservative end. Add a manager and link-building support and the same setup scales to between $400,000 and $750,000, according to the 2026 true-cost comparison cited in the same research. That is the part of the in-house pitch nobody puts in the deck.
It matters because the in-house decision is almost always sold as the cheaper option once you "stop paying agency margins." It isn't. The margin you stop paying gets replaced by a payroll line, a benefits line, a tools line, a recruiter's fee, and a management tax that compounds quietly for years. The agency invoice is visible. The in-house cost is structural. Those are not the same thing, and confusing them is how marketing budgets quietly bleed.
The Sticker Price Lies
Dan Wiggins lays out a clean version of the in-house line item: two SEO specialists at £70,000–£90,000, one content writer at £25,000–£35,000, National Insurance and pensions at £15,000–£18,000, SEO tools at roughly £8,000, training and development between £5,000 and £10,000. Sum it honestly and you are at £120,000–£140,000+ before output.
Notice what isn't in there. Recruitment fees. The three months of zero output while you hire. The first six months while the new writer learns your product. Laptops. Office allocation. The manager's slice of time spent reviewing drafts instead of doing strategy. Sick leave. Parental leave. The replacement cost when the writer leaves in eighteen months, which most of them do.
The honest number is not the line items. The honest number is the line items plus the friction. And the friction is where the in-house model quietly loses to anything priced per unit of output.
Churn Is the Tax Nobody Models
Content writers do not stay. Junior SEO specialists especially do not stay. Average tenure in content marketing roles sits under two years at most companies, and every departure resets the institutional knowledge clock to zero. You paid to train someone on your product, your tone, your internal link structure, your style guide. They take it to the next job.
Replacement is not just the recruiter's 20%. It is the gap. Two months to hire, two months to onboard, two months until the new person is writing at the level of the one who left. Six months at reduced or zero output, multiplied by a fully-loaded salary, is real money. On a £35,000 writer, that single churn event costs something like £17,000 in lost productivity on top of recruitment. Do it every eighteen months and the math gets ugly fast.
Outsourced writing, priced per article, has the opposite property: when a writer leaves the vendor, the buyer feels nothing. The unit price is the unit price. The vendor absorbs the churn. That is not a small accounting difference — it is the entire reason fixed per-article pricing exists.
What Outsourced Actually Costs Per Unit
Agency engagements run between $18,000 and $180,000 per year according to the 2026 true-cost comparison cited in the research, and SEO Pricing in 2026 puts most US and UK businesses between $1,500 and $10,000 per month for professional SEO services. Wiggins references a £5,000-per-month package as a typical agency offer.
Translated to per-article cost, the spread is enormous. A £5,000/month retainer producing eight articles works out to £625 per article. An in-house writer on £30,000 fully loaded to roughly £40,000, producing four publishable articles a month — generous, for someone also doing briefs, edits, and meetings — comes out closer to £830 per article, and that ignores the SEO specialist salaries the writer depends on.
At the low end of the outsourced market, per-article pricing around €75 exists for production-grade SEO content. Whether that quality fits a given brand is a separate question. The point is the unit economics: a fixed per-piece price the buyer can multiply by volume is structurally easier to budget than a payroll-plus-tools fixed cost the buyer pays whether output happens or not.
Where In-House Genuinely Wins
The honest case for in-house is not cost. It is integration. The daydream team's March 2025 piece on when to build versus outsource points to Airbnb, Canva, Zapier, Zillow, and HubSpot as companies that "mastered SEO through consistent, long-term investment." Those teams are not cheap. They are embedded. The writer sits next to the product manager. The SEO lead argues with engineering about URL structure on Slack. The content roadmap moves with the product roadmap because they are the same roadmap.
If SEO is a core acquisition channel and the company is large enough that content needs to reflect deep product knowledge that changes weekly, in-house earns its keep. Not because it is cheaper per article — it isn't — but because the alternative produces generic content that ranks but doesn't convert.
For everyone else, and that is most companies, the integration argument is theoretical. The in-house writer ends up producing the same top-of-funnel listicles an outsourced writer would, at three times the unit cost, with churn risk attached.
🧮 True Per-Article Cost Estimator
How To Actually Run The Comparison
This is the section worth scanning. Four cost categories most in-house vs outsourced SEO comparisons skip or fudge:
Fully-loaded salary: Take the base salary, add employer National Insurance and pension contributions (Wiggins puts this at £15,000–£18,000 across a small team), add a realistic share of office, equipment, and software. The number that matters is total cost to employ, not headline salary. For a £30,000 content writer this typically lands between £38,000 and £45,000 before you have measured output.
Tooling: SEO tools run roughly £8,000 a year for a small team per the research, but the real figure depends on how many seats and which stack. Rank tracking, crawler, content optimization, analytics, AI assistance — these stack quickly. Outsourced vendors absorb their own tooling cost into the per-article price, which is one of the structural reasons their unit economics work.
Management overhead: Every in-house writer needs a manager reviewing output, setting briefs, handling performance, and running the roadmap. If the head of marketing is doing this, that is a senior salary partially allocated to content production. Most internal cost models pretend this is free. It isn't. Allocate at least 15–20% of a manager's time per writer and put a number on it.
Ramp and churn: Assume eighteen-month average tenure. Assume four months of reduced productivity per replacement (two months hiring, two months learning). Build that into the annual cost as a recurring expense, not a one-off. This single adjustment usually flips the comparison.
Output volume: Divide total annual cost by realistic publishable articles per year, not theoretical capacity. A full-time writer doing briefs, edits, internal reviews, and meetings publishes far fewer finished pieces than the calendar suggests. Forty to sixty long-form articles a year is a generous estimate for one writer. Run the per-article number honestly.
The Hybrid Most Companies Should Actually Run
The framing of in-house vs outsourced as a binary is the mistake. The interesting model is a small in-house strategy function — one senior person who owns keyword strategy, briefs, internal linking, and quality control — paired with outsourced production for the actual writing.
This keeps the integration where integration matters: strategy, product knowledge, what to write and why. It moves the part that scales linearly with volume — drafting — to a unit-priced supplier. The in-house cost drops from £120,000+ to maybe £55,000 for one senior hire. The variable cost becomes predictable per article and scales up or down with budget without hiring or firing.
The companies that get burned by outsourcing are the ones who outsource strategy. The companies that get burned by in-house are the ones who insource production at scale. Almost nobody needs five in-house content writers. Almost everybody needs one in-house person who knows what good looks like.
⚖️ In-House vs. Hybrid Model: 3-Year Cost Breakdown
What The Long-Term Number Actually Looks Like
Run the comparison over three years, which is the only honest window for SEO. An in-house team of two specialists and one writer at the low end of Wiggins' range is £360,000 across three years before churn. Add one replacement cycle on each role — conservative — and you are closer to £420,000–£450,000. Output: maybe 150 articles across the period, generously.
A hybrid model with one senior strategist at £55,000 fully loaded and outsourced writing at a midpoint per-article price, producing the same 150 articles, comes out roughly half. The strategist owns quality. The vendor owns throughput. Churn risk sits with the vendor on the production side and concentrates on a single hire on the strategy side, where you can pay enough to retain.
The long-term cost of in-house SEO writing hides in three places: the gap between headline salary and fully-loaded cost, the recurring tax of churn, and the management time nobody charges to the content P&L. Once those are on the spreadsheet, the question stops being in-house vs outsourced and starts being which parts of the work belong on payroll and which parts belong on an invoice. For most companies the answer is: strategy stays, production goes. The per-article market exists because the math, done honestly, points there.
Sources
- In-House vs Outsourced SEO: What's the Best Value in ...
- When to outsource SEO vs. build in-house - daydream
FAQ
How much does an in-house SEO writing team actually cost per year?
A modest in-house team — two SEO specialists and one content writer — runs £120,000 to £140,000 per year before anyone publishes a word, per Dan Wiggins' 2025 breakdown. Add a manager and link-building and the same setup scales to between $400,000 and $750,000. That's the part of the in-house pitch nobody puts in the deck.
Why is churn the hidden cost of in-house SEO writing?
Content writers don't stay. Average tenure sits under two years, and every departure resets institutional knowledge to zero. Replacement isn't just the recruiter's 20% — it's the six-month gap of reduced output. On a £35,000 writer, one churn event costs roughly £17,000 in lost productivity on top of recruitment fees.
Is outsourced SEO writing cheaper per article than in-house?
Yes, structurally. A £5,000/month retainer producing eight articles works out to £625 per article. An in-house writer on £30,000 fully loaded to £40,000, producing four publishable articles a month, comes in closer to £830 — and that ignores the SEO specialist salaries the writer depends on.
When does in-house SEO writing actually make sense?
The honest case for in-house isn't cost — it's integration. If SEO is a core acquisition channel and content needs to reflect deep product knowledge that changes weekly, in-house earns its keep. Not because it's cheaper per article, but because the alternative produces generic content that ranks but doesn't convert.
What's the smartest hybrid model for SEO content?
Keep one senior in-house strategist who owns keyword strategy, briefs, internal linking, and quality control — paired with outsourced production for the drafting. In-house cost drops from £120,000+ to maybe £55,000. Strategy stays where integration matters; production moves to a unit-priced supplier that scales with budget without hiring or firing.
What costs do most in-house vs outsourced comparisons miss?
Four categories: fully-loaded salary (base plus NI, pension, equipment, software), tooling at roughly £8,000+ a year, management overhead at 15–20% of a manager's time per writer, and ramp-and-churn assuming eighteen-month tenure with four months of reduced productivity per replacement. That last adjustment usually flips the comparison.
What does the three-year cost of in-house SEO writing really look like?
An in-house team of two specialists and one writer at the low end of Wiggins' range is £360,000 across three years before churn. Add one replacement cycle per role — conservative — and you're closer to £420,000–£450,000 for maybe 150 articles. A hybrid model producing the same volume comes out roughly half.