Attrition Rate Calculator
Calculate employee attrition rate and retention rate when positions are not backfilled. Compare voluntary vs involuntary splits and benchmark against industry averages.
Need turnover rate and replacement cost too?
This page focuses on attrition (leaving without backfill). For full turnover rate, voluntary/involuntary splits, and cost per departure, use the Employee Turnover Calculator →
What is Employee Attrition Rate?
Employee attrition rate measures workforce shrinkage: employees who leave and are not replaced, reducing headcount. Attrition Rate = (Employees Who Left ÷ Average Headcount) × 100. It differs from turnover because attrition implies vacant roles — deliberate downsizing, restructuring, or unfilled departures.
Use this page when headcount is declining or you are tracking natural workforce reduction separately from replacement hiring. Optional voluntary vs involuntary splits help diagnose whether exits are resignation-driven or layoff-driven.
For the broader turnover rate — all separations whether backfilled or not — plus estimated replacement cost per departure, use the Employee Turnover Calculator. Turnover includes constant re-hiring; attrition focuses on net workforce reduction.
How the Attrition Rate Calculator Works
Formula, assumptions, and calculation steps for this hr tool.
Formula Used
Attrition Rate % = Employees Departed / Average Headcount x 100, over a longer trailing period than turnover
Methodology
Divides departures by average headcount over the measurement period, typically viewed as a longer-term trend than monthly turnover.
Calculation Steps
- Enter employee counts, pay rates, dates, or policy values.
- Normalize values to the same period.
- Apply the HR metric or benefit rule.
- Show the result with remaining allowance, cost, or rate.
Assumptions and Limits
- Company policy and local labor law can change exact results.
- Benefits and payroll tax rules vary by jurisdiction.
- Use HR or legal review for policy decisions.
Frequently Asked Questions
Attrition specifically refers to employees leaving without being replaced — the workforce shrinks. Turnover is broader: it includes all separations (whether replaced or not) and focuses on the rate of churn. A company experiencing attrition may be deliberately downsizing, while high turnover in a stable-headcount company means constant replacement hiring.
Attrition Rate = (Employees Who Left ÷ Average Headcount) × 100. Average Headcount = (Employees at Start + Employees at End) ÷ 2. For periods shorter than a year, multiply by (12 ÷ months) to annualize the rate for meaningful comparisons.
Attrition rates vary significantly by industry. Technology: ~13%, Healthcare: ~22%, Retail: ~60%, Hospitality: ~70–80%, Finance: ~18%, Manufacturing: ~30%. The overall US average is around 57% annually including all industries, but knowledge-work sectors typically aim for under 15%.
Retention Rate = 100% − Attrition Rate, calculated for a given period. A 15% annual attrition rate equals an 85% retention rate. Most HR professionals consider 90%+ retention rate a good benchmark for professional services and technology companies.
Key levers include: competitive compensation benchmarked annually, clear promotion criteria and career paths, manager quality (invest in training), flexible work arrangements, employee recognition programs, psychological safety culture, stay interviews (not just exit interviews), and acting quickly on engagement survey results.
Real-World Applications of Attrition Rate
Attrition Rate Benchmarks by Industry
| Industry | Avg Annual Attrition | Key Driver |
|---|---|---|
| Technology | ~13% | High demand, stock vesting cliffs, remote opportunities |
| Finance & Banking | ~18% | High burnout, competitive poaching, bonus cycles |
| Healthcare | ~22% | Burnout, shift work, agency work alternatives |
| Manufacturing | ~30% | Physical demands, automation displacement, seasonal work |
| Retail | ~60% | Part-time/seasonal workforce, low wages, high competition |
| Hospitality | ~70–80% | Seasonal, high physical demands, low wages |
References
- Society for Human Resource Management (SHRM). Employee Turnover and Retention. shrm.org
- Gallup. State of the American Workplace. gallup.com/workplace
- LinkedIn. Workforce Confidence Index & Employee Turnover Data. linkedin.com/business
- Work Institute. Retention Report. workinstitute.com
- Bureau of Labor Statistics. Job Openings and Labor Turnover Survey (JOLTS). bls.gov/jlt
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