Employee Attrition Rate Calculator: Departures Over Headcount
Work out an employee attrition rate — the headline retention metric that decides whether HR has a recruiting problem, a retention problem, or both.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Attrition rate | Retention rate |
|---|---|---|
| 40 of 400 left | 10.00% | 90.00% |
| 15 of 100 left | 15.00% | 85.00% |
| 200 of 2,000 left | 10.00% | 90.00% |
| 8 of 320 left | 2.50% | 97.50% |
How This Calculator Works
Enter departures and average headcount during the same period. The calculator divides one by the other and multiplies by 100 to give the attrition rate, with the retention rate shown alongside. By default, voluntary and involuntary departures are combined — separate them if you want a pure voluntary-turnover figure.
The Formula
Part as a Percentage of a Whole
Part is the portion, Whole is the total it belongs to
Worked Example
A company losing 40 employees from an average headcount of 400 runs at 10% annual attrition, with 90% retention. US benchmarks vary widely by industry: tech and retail often run 15% to 25%; healthcare, government, and unionized industries sit far lower at 5% to 10%.
Key Insight
Attrition rate is most useful split into voluntary and involuntary. Voluntary attrition signals retention problems (compensation, management, growth opportunities); involuntary signals performance or restructuring decisions. A 10% headline rate with 8% voluntary departures is a very different story than 10% with 8% involuntary — and the response should be different too.
Cost of replacing an employee
Replacement cost substantial. SHRM estimates: 50-200% of annual salary depending on role complexity.
Components. (1) RECRUITING — job posts, recruiter fees, interview time. Senior roles often use external recruiter at 20-30% of salary. $100K position = $20-$30K recruiting cost.
(2) ONBOARDING — productivity loss during first 3-6 months. New employee 40-70% productive during ramp.
(3) TRAINING — formal training programs, mentor time. $5K-$25K per role.
(4) KNOWLEDGE LOSS — institutional knowledge departing employee carried. Often unrecoverable except through documentation.
(5) TEAM IMPACT — remaining employees absorb work during vacancy. Burnout risk.
Net financial impact. $100K base salary employee leaves: ~$50K-$100K replacement cost typical. For high-skill roles: $100K-$200K (especially tech, healthcare specialists).
Compounding effect. High attrition triggers more attrition. Quitting becomes 'safe' choice when team morale drops. Critical to interrupt this cycle through retention investment.
Why attrition varies 5× across industries
RETAIL — 60-80% annual. Often part-time, lower wage, limited career progression. Some seasonal turnover (hiring cycle).
FAST FOOD/RESTAURANTS — 70-100% annual. Most extreme. Highly variable shifts, low wages, alternative employment available.
TECH — 20-25%. High demand drives mobility. Tech workers receive multiple offers annually; switch employers for compensation gains.
HEALTHCARE — 17-25%. Burnout from pandemic-era stress. Many nurses, doctors moved to different specialties or left healthcare.
FINANCE/INSURANCE — 12-18%. More stable workforce. Career progression internal.
GOVERNMENT — 8-12%. Job security, pension, stable culture. Lowest U.S. attrition.
NONPROFIT — 15-20%. Mission-driven employees but compensation pressure causes turnover.
MANUFACTURING — 15-25% production; 8-15% management.
Industry-specific drivers. Strategic implication: retention strategies must address industry-specific causes.
U.S. attrition rate by industry (2024)
Reference U.S. annual employee attrition rates.
| Industry | Annual attrition | Notes |
|---|---|---|
| Fast Food/Quick-service Restaurants | 70-100% | Highest |
| Retail (non-management) | 60-80% | |
| Hospitality (hotel staff) | 50-70% | |
| Construction | 20-30% | Seasonal |
| Tech (software) | 20-25% | Highly mobile |
| Healthcare (overall) | 17-25% | Post-pandemic pressure |
| Healthcare (nurses) | 20-30% | Burnout severe |
| Manufacturing | 15-25% | |
| Financial Services | 12-18% | |
| Insurance | 12-18% | |
| Government (federal) | 8-12% | Most stable |
| Government (state/local) | 10-15% | |
| Nonprofit | 15-20% | |
| U.S. overall | 15-20% | All industries |
Attrition rate substantially higher in service industries (retail, fast food) than knowledge-economy industries. Within industries, leadership roles typically lower attrition than entry-level. Strategic implication: retention investment must target high-attrition roles for greatest impact.
Frequently Asked Questions
How is attrition rate calculated?
Divide departures by average headcount over the same period, then multiply by 100. 40 departures from a 400-person average headcount is a 10% attrition rate.
Voluntary or involuntary — which to count?
Most HR teams track voluntary attrition separately because it signals retention problems. Total attrition (voluntary + involuntary) is what investors and benchmarks usually compare against — both useful, in different contexts.
What is a good attrition rate?
Varies by industry. Tech and retail commonly run 15% to 25% annual. Healthcare, government, and unionized industries often 5% to 10%. Compare against same-industry peers, not cross-industry averages.
How is this different from turnover?
Used interchangeably in most contexts. Some HR frameworks reserve 'turnover' for total departures and 'attrition' for departures the company chose not to backfill — the distinction matters for layoff or restructuring reporting.
How can a company reduce attrition?
Address the actual reasons people leave — usually compensation, management, growth opportunities, or work-life balance. Exit interview data and stay interviews surface the local causes; cookie-cutter retention programs rarely move the rate.
When is this calculator unreliable?
When attrition includes both voluntary and involuntary terminations (very different drivers — voluntary suggests culture/compensation issues, involuntary suggests performance issues). Also unreliable when seasonal industries calculated annually without adjustment. For meaningful analysis, separate voluntary from involuntary, segment by role/tenure/department.
References & Authoritative Sources
- U.S. Bureau of Labor Statistics — JOLTS — Job Openings and Labor Turnover Survey · consulted June 1, 2026 · Federal labor turnover data
- Society for Human Resource Management (SHRM) — Employee Retention Research · consulted June 1, 2026 · Industry HR association
- Gallup — State of the Workplace — Annual Workplace Report · consulted June 1, 2026 · Major workplace research firm
Related Calculators
Methodology & Review
Employee attrition rate equals (employees who left / average employee count) × 100. Annual rate standard. The calculator returns attrition rate percentage. U.S. averages 2024: ~15-20% overall; tech industry 20-25%; retail 60-80%; healthcare 17-25%; nonprofit 15-20%. Voluntary turnover (employee chose to leave) vs involuntary (laid off, fired) measured separately for meaningful analysis. RELIABILITY: Reliable for documented period. Less reliable when (a) attrition includes both voluntary and involuntary (different drivers); (b) periodicity affects calculation (annual vs quarterly produces different metrics); (c) part-time vs full-time treated inconsistently.
Updated