Glossary

Turnover Rate: Definition, Formula & How to Interpret It

Hady12 min read
Turnover Rate: Definition, Formula & How to Interpret It | Ordio

Frequently asked questions about Turnover Rate

What does turnover rate mean?

Turnover rate is the percentage of employees who left your organization over a set period — usually departures divided by average headcount, times 100. It measures workforce exits for retention planning, not inventory turnover, revenue turnover, or customer churn.

How do you calculate turnover rate?

Turnover rate = (departures in the period ÷ average headcount in the period) × 100. Average headcount is often (start headcount + end headcount) ÷ 2. Count voluntary and involuntary exits unless you report voluntary-only. Use the same window for the numerator and denominator — do not multiply a single month’s rate by twelve unless you treat it as a rough estimate.

What is the difference between turnover rate and attrition rate?

Many teams use turnover rate and attrition rate interchangeably for the departure rate. Some HR vendors say attrition means roles left unfilled and turnover means roles that are replaced. Pick one definition, document it, and keep site reports comparable — see our attrition rate glossary for attrition-specific depth.

What is voluntary turnover rate?

Voluntary turnover rate counts only exits employees choose — resignations, retirements, and similar voluntary separations — divided by average headcount, times 100. Many US leadership dashboards track it separately from total turnover. Mercer’s 2025 US survey reported about 13% voluntary turnover as an external benchmark, not a legal target.

What is a good turnover rate?

There is no universal good target. Many HR teams use ~10% as a watchpoint and ~20% as high for office roles. Mercer’s 2025 US survey cited about 13% voluntary turnover as external context. Hospitality and retail often run higher when you segment by role and tenure — compare to your own trailing twelve months and peer sites first.

What does a 10% turnover rate mean?

A 10% turnover rate means about one in ten roles turned over relative to average headcount in the period. Many HR guides treat 10% as a watchpoint, not a crisis. Check whether exits cluster in new hires, one location, or one manager before you change company-wide policy.

Is 12% a high turnover rate?

For many office teams, 12% annual turnover is slightly above common Mercer voluntary benchmarks and worth investigating if voluntary exits are rising. In high-churn hourly sectors it can be closer to normal — segment by site, role, and new-hire turnover before you treat 12% as a crisis or dismiss it.

Is a 20% turnover rate high?

For many office or specialist teams, 20% annual turnover is high and worth a root-cause review by team and tenure. In hospitality or retail it can be closer to normal when segmented correctly — still dig into sites or roles well above your own baseline, especially if new-hire turnover is rising too.

Does turnover rate include layoffs?

Yes — if you use the all-departures definition, layoffs and other involuntary exits count unless you filter them out. Many teams report voluntary-only turnover next to total turnover so leadership can see controllable resignations separately from restructuring. Label both metrics clearly on every dashboard.

Should I use FTE or headcount in the turnover rate denominator?

Pick one rule and keep it across sites: headcount (people on payroll) or FTE (full-time equivalents). Mixing them breaks month-to-month comparisons. Document whether employees on unpaid leave stay in the denominator and whether part-time staff count as 1.0 or a fractional FTE.

How is turnover rate different from retention rate?

Turnover rate measures the share who left; retention rate measures the share who stayed. When definitions align, retention ≈ 100% − turnover on a stable headcount — 15% turnover often pairs with about 85% retention. Cohort retention (day-90 stay rate for new hires) is often more actionable than one blended annual percentage.

Where can I calculate turnover rate online?

Use our free attrition rate calculator — it applies the standard HR formula (departures ÷ average headcount × 100) when your turnover and attrition definitions match. Enter start headcount, end headcount, and departures for a quick percentage.