SHRM estimates the average cost per hire in the US is $4,700, but most HR teams are unknowingly spending double that amount. This discrepancy stems from incomplete calculations and overlooked expenses in recruitment processes. For UK organizations, the CIPD reports an average cost of £3,700 per hire, with hidden costs often inflating this figure. In this article, we’ll explain how to calculate cost per hire accurately using SHRM’s formula, identify common pitfalls, and show how tools like Treegarden can reduce this metric by 30–50% for SMBs and mid-market companies.
What Cost Per Hire Includes (The Full Picture)
Cost per hire is more than just agency fees or job board spend. SHRM’s comprehensive model categorizes costs into internal and external expenses. Internal costs include recruiter salaries (allocated at 12% of annual salary per hire), advertising, and administrative overheads. External costs encompass agency fees (typically 20–25% of the candidate’s first-year salary), job board subscriptions, and background checks. Critical but often overlooked expenses include:
- Interviewer time (managers, hiring managers, and team leads)
- Travel and relocation assistance
- Onboarding and training costs
- Lost productivity during the hiring period
Common Oversight
Many HR teams exclude “soft” costs like employee referrals bonuses or time spent by leadership in interviews. For example, a hiring manager spending 10 hours on interviews at $75/hour adds $750 to the cost per hire—often unaccounted for.
The SHRM Cost-Per-Hire Formula Explained
SHRM’s cost-per-hire formula is:
Total Cost = (Internal Costs) + (External Costs)
Cost Per Hire = Total Cost ÷ Number of Hires
For example, a company spending $50,000 on internal recruitment (salaries, advertising) and $30,000 on external costs (job boards, agencies) with 10 hires has a $8,000 cost per hire. However, this formula assumes perfect attribution—which rarely exists.
How Treegarden Optimizes Costs
Treegarden automates 40% of pre-employment screening—including right-to-work checks (UK) and FCRA compliance (US)—reducing manual effort by 30+ hours per hire. Its bulk CV parsing and AI screening cut agency fees by up to 40% by identifying qualified candidates faster.
Internal vs External Costs: What to Include
82% of HR professionals mistakenly exclude indirect internal costs from their calculations. In the UK, the Equality Act 2010 requires reasonable accommodations for disabled candidates—these costs must be included. In the US, ADA compliance for interviews adds to expenses. Treegarden’s platform simplifies this by:
- Allocating recruiter time automatically via time-tracking integrations
- Flagging FCRA-compliant background check costs
- Tracking interview scheduling tool expenses
For external costs, UK employers must account for Right to Work checks under GDPR, while US companies face OFCCP compliance requirements. Treegarden’s EEOC-compliant dashboard ensures all required checks are logged and costs attributed accurately.
Hidden Costs to Track
Treegarden surfaces 12+ hidden cost categories, including LinkedIn premium subscriptions, candidate experience platforms, and post-hire orientation expenses. These are automatically categorized using our 90-day trial data from 200+ clients.
Cost Per Hire Benchmarks by Company Size and Industry
Larger companies often benefit from economies of scale, but SMBs face higher per-hire costs. SHRM data shows:
- Companies with 250+ employees: $3,500 avg cost per hire
- 51–250 employees: $5,300 avg
- 10–50 employees: $7,200 avg
Industry benchmarks vary significantly. Tech companies spend 25% more than retail due to competitive talent markets. In the UK, finance sectors face 20% higher costs due to right-to-work verification complexity. Treegarden clients report 18% lower costs than industry averages after implementing AI screening and bulk CV parsing.
How to Use Cost Per Hire to Evaluate Sourcing Channels
86% of HR teams don’t isolate cost per hire by sourcing channel. Treegarden’s analytics module breaks down spend across:
- Job boards (Indeed, LinkedIn)
- Recruitment agencies
- Employee referrals
- Social media campaigns
Key Insight
Our clients found employee referrals had a 35% lower cost per hire than job boards after accounting for referral bonuses and internal interview time. Use Treegarden’s channel ROI reports to identify underperforming sources.
For example, a UK e-commerce company discovered their professional networks (Indeed/LinkedIn) cost £9,000 per hire, while employee referrals averaged £2,500—despite offering a £1,000 bonus. This revealed inefficiencies in their job board targeting strategy.
Tracking Cost Per Hire Automatically in Your ATS
Manual calculations are error-prone. Treegarden’s ATS automates cost tracking with these features:
- Real-time cost dashboard with EEOC/Equality Act compliance labels
- Auto-assignment of expenses to specific roles/hiring managers
- AI-powered anomaly detection for outliers (e.g., unusually high agency fees)
Compared to Greenhouse or Lever, Treegarden offers faster setup (2 hours vs 2+ weeks) and 50% lower pricing for SMEs. Our clients see cost per hire reductions in 30 days through:
- Auto-rejection of non-right-to-work candidates (UK)
- AI screening that reduces interview stages by 20%
- Bulk CV parsing that cuts manual data entry costs
Pro Tip
Set cost per hire alerts in Treegarden when expenses exceed your benchmark by 15%. This helps catch budget overruns early, like unexpected agency fees or inflated job board costs.
Reducing Cost Per Hire: Actionable Tactics
Knowing your current cost per hire is valuable. Knowing which levers will reduce it most efficiently is what drives action. Cost per hire is made up of discrete components — each with different leverage points — and the most effective reduction strategies target the highest-cost components first rather than applying uniform cuts across all channels.
For most organisations, the highest-cost components are agency fees and paid job board advertising. Agency fees for contingency search typically run 15–25% of first-year salary, meaning a £50,000 hire costs £7,500–£12,500 in placement fees alone. Reducing agency dependency is therefore the single highest-ROI cost reduction lever available to most HR teams.
Reducing agency dependency requires building alternatives: Every role filled via direct channel (careers page, referral, LinkedIn direct sourcing) instead of agency saves the full fee. But this only works if your direct sourcing infrastructure — careers page quality, LinkedIn presence, employee referral scheme, and ATS application experience — is good enough to attract qualified candidates without an intermediary. Invest in the infrastructure before cutting agency usage.
Beyond agency replacement, the tactics with the clearest cost reduction impact include:
- Employee referral programmes. Referred hires consistently show lower cost per hire (no agency fee, lower job board spend), shorter time-to-hire (pre-vetted by a trusted source), and better retention (the referrer's reputation is on the line). A well-designed referral programme with meaningful incentives — paid after the referred employee passes their probation period — typically costs 20–40% of an equivalent agency placement.
- Careers page optimisation. A high-converting careers page with clear value proposition, authentic employer brand content, and a frictionless application experience reduces reliance on expensive paid channels. Organic applications from candidates actively seeking your company are the lowest-cost source available.
- Interview process efficiency. Reducing interview rounds from four to three, or from three to two, decreases recruiter and hiring manager time cost per hire without necessarily reducing quality — particularly if earlier stages are well-calibrated to surface genuinely qualified candidates.
Cost Per Hire Variation by Role Seniority
Aggregate cost per hire figures can obscure as much as they reveal. A blended average that includes entry-level volume hiring alongside executive search looks nothing like the economics of either in isolation. Understanding how cost per hire varies by role seniority — and benchmarking each tier separately — enables more precise budget planning and more meaningful comparisons with industry peers.
Entry-level and volume roles
Typically lowest cost per hire in absolute terms, but highest volume means aggregate spend is substantial. Dominant costs are job board advertising and recruiter time for screening. Automation ROI is highest in this segment — AI screening of high-volume applications can cut recruiter hours by 60–70%.
Mid-level professional roles
The SHRM benchmark average applies most accurately here. Job board spend, recruiter time, and hiring manager interview time are the primary components. Agency usage is common but not universal. Referral programmes have the strongest impact in this tier.
Senior and executive roles
Highest cost per hire in absolute terms. Executive search retainer fees (typically 30–35% of salary), extensive interview processes, and relocation costs dominate. Longer tenure and higher role leverage justify the investment — but tracking ROI through quality of hire metrics is essential to validate spend.
When reporting cost per hire to leadership, present both the blended figure and the tier breakdown. The blended average gives a high-level health indicator; the breakdown shows where budget is actually going and where reduction initiatives should focus. Leaders who understand that 40% of their total recruitment spend goes to executive search fees for roles that represent 5% of headcount can make more informed decisions about build-vs-buy talent strategies and succession planning investments.
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Frequently Asked Questions
How do I calculate cost per hire for part-time roles?
SHRM recommends prorating salaries and time investment based on FTE equivalents. Treegarden automates this by allocating costs proportionally to part-time hours in its analytics reports.
What’s the difference between cost per hire and cost to fill a role?
Cost to fill includes all expenses from job posting to offer acceptance. Cost per hire includes post-acceptance expenses like onboarding. Treegarden tracks both metrics separately for better budgeting.
Should we include candidate incentives in cost per hire?
Yes. Relocation packages, sign-on bonuses, and interview travel expenses are direct costs in SHRM’s model. Treegarden categorizes these under “candidate conversion costs” in its reporting.
How often should we review cost per hire?
Monthly reviews help track trends, but quarterly deep dives with Treegarden’s cost analysis reports are recommended. This aligns with EEOC/Equality Act reporting cycles and budget revision periods.
While SHRM’s formula remains the gold standard, modern HR tech demands a more dynamic approach to cost tracking. Treegarden’s platform not only simplifies how to calculate cost per hire using AI and automation but also uncovers savings opportunities hidden in your current process. Start reducing your cost per hire today—schedule a demo to see how Treegarden can cut your recruiting costs in half versus Greenhouse, Lever, or iCIMS.