Most comparisons between hiring in-house and paying an agency stop at monthly cost. That’s the wrong number to start with. I’ve run content programs on both sides of this decision for B2B and SaaS clients over the past several years, and the teams that get burned aren’t the ones who pick the “wrong” option, they’re the ones who never ran the actual math before picking either.
Here’s the math I actually walk clients through.
What an in-house content function really costs
A single mid-level content marketer or SEO writer in the US or UK runs somewhere between $55,000 and $85,000 a year fully loaded, before tools. Add a content management or editorial layer once you’re publishing more than 2-3 pieces a week, and you’re looking at another $70,000-$100,000 for someone who can actually run a calendar, brief writers, and hold quality bar. Tools stack (SEO platform, a decent CMS plugin suite, design tools, a content calendar system) adds $500-$1,500 a month depending on scale.
None of that is the part people underestimate. The part that actually breaks budgets is ramp time. A new in-house hire, even a strong one, needs 60-90 days to understand your product, your ICP, your competitive positioning, and your existing keyword footprint well enough to write anything that converts. During that window you’re paying full salary for content that reads generic. I’ve seen this specific gap kill more first-year content budgets than any agency invoice.
Then there’s the hiring risk itself. B2B and SaaS content writing is a narrow skill: you need someone who can write for a technical buyer without either dumbing the product down or drowning it in jargon. That candidate pool is small, and when that person leaves (average tenure for content roles skews under two years in my experience), you’re back to a 90-day ramp with a new hire while your publishing cadence stalls.
What an agency retainer actually buys, and what it doesn’t
For B2B and SaaS accounts specifically, I’ve seen legitimate agency retainers land anywhere from $2,500 to $8,000 a month depending on volume and whether SEO strategy, technical audits, and distribution are bundled in or sold separately. That range is wide on purpose: a retainer that only covers writing is a different product than one that covers strategy, keyword research, technical on-page work, and reporting.
Where this comparison usually gets dishonest is in what’s excluded. A lot of the retainers I’ve reviewed for prospective clients don’t include SME interviews, meaning the agency writes from public information and competitor content instead of from your actual product depth. That produces content that ranks fine and converts poorly, because it never says anything a competitor’s page couldn’t also say. If you’re evaluating an agency for a B2B or SaaS account, ask directly whether SME time is part of the process. It should be, and our own content marketing service builds it in for exactly this reason.
The other cost people miss: agency onboarding isn’t instant either. Expect 3-4 weeks before an agency’s output matches your voice and product understanding, shorter than an in-house ramp, but not zero.
Time to first result: where B2B and SaaS break the standard advice
This is the section most comparisons skip entirely, and it’s the one that actually decides the ROI question.
B2B and SaaS sales cycles run long, often 60-180 days from first touch to close. Organic content takes its own 4-9 months to earn meaningful ranking and traffic, longer in competitive categories. Stack those two timelines and you get a real answer to “when does content pay for itself”: usually somewhere between month 8 and month 14, not month 3.
I bring this up because most in-house hiring decisions get evaluated at the 90-day mark, and most agency contracts get judged at the 3-month renewal. Neither timeline lines up with when B2B or SaaS content actually starts producing pipeline. If you’re running this ROI comparison and your evaluation window is shorter than 6 months, you’re not comparing agency versus in-house, you’re comparing two ways to lose the same first quarter.
Where each model actually wins
In-house wins on product depth by default. Someone sitting in your Slack, attending your sprint reviews, and talking to your support team weekly will write things an outside writer physically cannot, because they know what actually breaks for customers and what your competitors get wrong about your category. This matters more for technical SaaS products than almost anything else in the comparison.
Agencies win on consistency and mechanics. A dedicated in-house hire has one perspective on SEO, one workflow, and one point of failure. An agency team running multiple accounts sees more keyword cannibalization patterns, more technical SEO issues, more what’s-actually-ranking-right-now data than a single in-house hire will encounter in years. That pattern recognition is the part clients are actually paying for when the arrangement works, not the writing itself.
The hybrid model I recommend for most B2B and SaaS teams
For nearly every SaaS and B2B client I’ve advised on this decision, the setup that actually performs is neither pure in-house nor pure agency. It’s one in-house person, usually a product marketer or someone close to the product, who owns SME input and final sign-off, paired with an agency or contractor layer that owns SEO strategy, keyword research, technical execution, and publishing cadence.
This splits the two costs that actually matter: you’re not paying full salary for someone to also be your SEO strategist and technical auditor (skills that rarely live in the same person as strong product writing), and you’re not asking an outside agency to invent product depth they don’t have access to.
Running your own ROI math
Skip the generic frameworks. Here’s what I actually calculate with clients:
Cost per published piece. Total monthly spend (salary + tools, or retainer) divided by pieces published that month. In-house often looks cheaper per piece once ramp time is excluded, but ramp time should never be excluded from a first-year calculation.
Time to breakeven. Take your average deal size, your close rate on organic-sourced leads (estimate conservatively if you don’t have this yet), and your projected month-6 organic traffic. Work backward to the month your content spend crosses your content-attributed revenue. For most B2B and SaaS accounts this lands between month 8 and 14, as above.
Single point of failure risk. What happens to your publishing cadence if your one in-house writer quits, or if your agency loses the account manager who understands your product? Price that disruption into the comparison, most people don’t.
SME access. Whichever model you choose, confirm SME time is actually budgeted, whether that’s your product marketer’s hours or your agency contract explicitly including interview time. Content without SME input plateaus at “competent but generic,” and that ceiling shows up in conversion rate long before it shows up in traffic numbers.
Where I land on this
If you’re a B2B or SaaS company with under $2M in ARR and no existing content function, start with an agency that includes SME interviews in scope, not a full-time hire. The ramp time and hiring risk aren’t worth it yet, and a good agency should be building your technical SEO foundation in parallel with content, which a solo in-house hire usually can’t do at the same pace.
Once you’re publishing consistently and the content channel is producing measurable pipeline, that’s the point to bring strategy in-house and keep an agency or contractor for the execution layer that benefits from cross-account pattern recognition. That’s the sequence I’ve seen actually work, in that order, not the reverse.
