We are an agency, so treat this with appropriate scepticism. It is also a question we get asked constantly, and the answer genuinely depends on volume and role type rather than on a general principle.
For a related Monitask resource on managing multiple clients efficiently, see this guide.
Here is the comparison we would give if we were not selling anything.
The volume arithmetic
Under roughly ten hires a year. An internal recruiter is hard to justify — the salary and overhead exceed what you would spend on agency fees, and the person will be underutilised. Hiring managers plus agencies for the difficult roles is usually right.
Ten to thirty hires a year. The grey zone. Depends heavily on role type. If most are similar and repeatable, an internal recruiter starts to pay. If they are varied and specialised, agencies still make sense.
Thirty or more. An internal function almost always wins on cost, and you gain employer-brand consistency and institutional knowledge as a bonus.
The comparison people forget: an internal recruiter costs their salary plus benefits plus tooling plus management time — realistically well above the headline salary. Run the number against your actual agency spend rather than against the fee percentage.
What internal recruiting is better at
Cost at volume. The fixed cost is amortised across every hire.
Company knowledge. They know the teams, the managers, and what actually makes someone succeed there.
Candidate experience consistency. One voice throughout.
Employer brand. Building a talent pipeline and a reputation over time, which nobody outside can do for you.
Repeatable roles. Where you hire the same profile regularly, an internal function builds a pool.
Long-term data. Source effectiveness, conversion rates, retention by channel — knowledge that compounds and stays with you.
What agencies are better at
Peaks. Sudden volume, a new site, a funded expansion — without hiring recruiters you will not need in eight months.
Scarce skills. Specialist agencies maintain networks in narrow markets that an internal generalist cannot replicate.
Confidential searches. Replacing an incumbent who is still in post.
Market access. A specialist has been talking to your target market for years and knows who is open, who is not, and what they earn.
Speed on a single urgent role. No ramp-up, no learning curve.
Coverage when you have nobody. Between internal recruiters, or with no function at all.
Executive and board-level roles, where retained search and market mapping are the point.
The honest comparison per hire
Do not compare "fee" against "no fee." Compare:
Agency route: fee + internal hours (fewer) + vacancy weeks (usually fewer) + advertising (usually none)
Internal route: recruiter cost apportioned + internal hours (more) + vacancy weeks (usually more) + advertising + tooling
The vacancy line is where most comparisons go wrong. If doing it yourself takes six weeks longer, the vacancy cost alone frequently exceeds the fee. See what it really costs to fill a role.
The hybrid most companies land on
The common and sensible arrangement:
- Internal recruiter handles the repeatable, high-volume roles
- Agencies handle specialist, urgent, confidential, and executive roles
- RPO covers peaks without permanent headcount
This gives you the cost advantage of internal on the bulk, and market access on the difficult ones — where the fee is a small fraction of what a mis-hire or a five-month vacancy would cost.
When to bring it in-house
Signals it is time:
- Consistent volume above roughly twenty hires a year
- Repeated hiring of the same profiles
- Agency spend exceeding a recruiter's fully loaded cost
- Hiring managers spending unsustainable time on screening
- Candidate experience varying by which agency was used
- A need to build employer brand rather than transact hires
Signals it is not:
- Volume that spikes and disappears
- Highly specialised roles across unrelated functions
- No manager with capacity to run a recruiting function
- Hiring paused or uncertain
If you build one
Hire someone who has done it before, not a coordinator with a new title. Sourcing is a skill.
Give them tools. An ATS, a sourcing platform, a job board budget. A recruiter without tooling is an expensive administrator.
Set the process. Structured interviews, scorecards, defined stages. A recruiter cannot fix hiring managers who will not interview.
Keep an agency relationship warm for the roles that will not fit.
Measure from the start. Time to fill, cost per hire, source effectiveness, first-year retention. Without a baseline you will not know whether the change worked.
What to ask an agency before engaging
- What is your specialism, specifically?
- How many roles like this have you filled in the last year?
- What is the replacement guarantee, in writing?
- Do you require exclusivity?
- What is your off-limits policy — who will you not approach while working with us?
- Who is the consultant, and will they stay on the account?
- What do you need from us to hit the timeline?
That last question separates the agencies who understand that speed is a joint problem from the ones who will blame your process later.
PJP works on contingency, retained, and RPO models. We will tell you which fits — including when the answer is none of them. Services → For broader reference, consult U.S. Department of Labor hiring resources.