Contingency vs retained vs RPO: which model is cheapest?
A decision matrix and worked examples at $80K, $150K, and $250K salaries. The right model depends on seniority, volume, and time-pressure. Here is the math for each.
The three models at a glance.
Contingency, retained, and RPO are fundamentally different commercial models. Contingency pays on placement, retained pays for the process, and RPO pays for a sourcing operation. The model that wins on cost depends on which one of those you are actually buying.
| Model | Typical fee | Best for | Paid when |
|---|---|---|---|
| Contingency | 15 to 25% of first-year base | One-off mid-level and senior IC | On placement only |
| Retained | 25 to 35% of first-year total comp | VP, C-suite, exclusive, confidential | In thirds: kickoff, shortlist, placement |
| Flat fee | $5K to $20K per role | Volume, repeatable mid-level | On placement |
| RPO (retainer) | $5K to $50K+ per month | Programmatic 12+ hires/yr | Monthly |
| RPO (per hire) | $1,500 to $4,000 per hire | High-volume, single function | Per placement |
| Project RPO | $50K to $500K fixed | Burst projects, new regions | Project milestones |
| In-house recruiter | $1,500 to $3,500 per hire (loaded) | Steady-state 25+ hires/yr per recruiter | Salary plus overhead |
Decision matrix by role and volume.
Use the matrix below to map a hiring scenario to a recommended primary model. Stacking is normal; in mid-market and enterprise, most companies run two or three models simultaneously for different role bands.
| Scenario | Primary model | Why |
|---|---|---|
| Single mid-level IC ($80K-$130K) | Contingency (or in-house) | One-off, no programmatic volume; contingency 15-22% |
| Single senior IC ($130K-$200K) | Contingency (specialist) | Niche specialist may charge 25%; still cheaper than retained on a single role |
| Single VP / executive ($200K+) | Retained | Quality premium justified; exclusivity and dedicated research |
| Single C-suite ($400K+) | Retained (big-five or boutique) | Mandatory market mapping; reputational risk if open-search |
| Mid-volume engineering (10-25/yr) | In-house + contingency overflow | Build in-house function; agency for specialist niches |
| High-volume GTM (50+/yr) | RPO retainer | Programmatic sourcing model; per-hire cost falls below contingency |
| Burst project hiring (10-30 in 90 days) | Project-based RPO | Fixed-fee project model; faster than ramping in-house |
| Confidential search at any level | Retained (boutique) | Exclusivity and discreet candidate outreach |
| Diverse-slate mandate | Retained or specialist contingency | Pay for dedicated mapping; do not rely on inbound pipeline |
Worked examples at three salary bands.
Same hire, four pricing models. The right answer is rarely the cheapest in absolute dollars; speed-to-hire, slate quality, and warranty terms move the equation.
The hidden cost lines on each model.
Candidate-ownership disputes if multiple agencies submit the same candidate. Replacement-warranty short (90 days) means a hire who leaves at day 100 is a sunk cost. Pipeline reaches that go cold if the agency loses interest.
1/3 kickoff fee is at risk if you cancel mid-search. Exclusivity locks you out of inbound applications via other channels for the role's duration. Slate of 3 to 5 candidates may not surface the strongest off-market candidate if research scope is too narrow.
Minimum-commitment volume requirements; you pay the retainer even in a hiring freeze. Brand-handoff risk: candidates may experience the RPO recruiter as your brand, with no internal context. Onboarding-to-RPO transition takes 30 to 60 days of internal investment.
Service level often lower than contingency (less hand-holding, less candidate prep). May not survive complex search; some flat-fee shops sub-out hard roles. Warranty terms shorter than contingency in many cases.
Loaded cost of recruiter time often under-counted. Tooling, ATS, sourcing-tools, and coordinator overhead all sit on the in-house P&L. Recruiter ramp is 90+ days; first hires are expensive.
Cross-reference and deep dives.
Plug your salary band and volume into the calculator to compare in-house against agency cost line-by-line.