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 |
Contingent RPO is not the contingency model.
Contingent RPO means RPO applied to the contingent workforce: contractors, temps, seasonal ramp hiring and senior non-permanent roles, rather than permanent headcount. Contingency, the first row in the table above, is something else entirely: a permanent-hire agency fee of 15 to 25 percent of first-year base, paid only when a candidate starts. The two share a word and nothing else. Providers usually sell contingent RPO alongside or inside a Managed Service Provider arrangement, which is the model that governs a company’s contingent labour spend, and price it the way they price any RPO: monthly retainer, per hire, or fixed-fee project. Not as a percentage of salary.
| Term | What it actually is | How it is priced |
|---|---|---|
| Contingency | A permanent-hire agency fee model, paid on placement | 15 to 25% of first-year base |
| Contingent RPO | RPO scope extended to non-permanent workers: contractors, temps, seasonal ramp, senior interim roles | RPO pricing: monthly retainer, per hire, or fixed-fee project |
| MSP | Managed service provider running the contingent labour programme end to end: suppliers, rates, compliance, VMS | Supplier-funded margin or a management fee on spend |
Scope definition checked against a provider’s own contingent RPO solution page at hirevelocity.com on 7 September 2026, which describes it as covering high-volume, seasonal-ramp and high-level non-permanent roles and states it can run alongside an existing MSP in a hybrid model. No contingent RPO provider we checked publishes a list price for the service, so treat the RPO ranges in the table above as the planning band and get the fee structure in writing before signing.
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.
Per-hire, monthly retainer, and project fixed-fee RPO models with 2026 price ranges.
Read →All four fee models with worked examples and negotiation levers.
Read →Retained search timeline, fee structure, and alternatives.
Read →How fee model interacts with role-level cost ranges.
Read →Plug your salary band and volume into the calculator to compare in-house against agency cost line-by-line.