Employee Turnover Rate Calculator
Your staff turnover and retention rate for any period, and what leavers are costing the business once recruitment and lost productivity are counted.
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- Formula and worked example included
Employee Turnover Calculator
Enter your figures to see results.
What is my staff turnover rate and what is it costing?
Staff turnover is the share of your workforce that left in a period. Nine leavers from an average team of 44 is 20.5%: high for an office-based business, normal for hospitality. Every leaver costs money to replace: advertising, agency fees, interviews and months of lost productivity, commonly £6,000 to £15,000 for a mid-level role.
How to use this calculator
- Enter headcount at the start and end of the period, and the number of people who left.
- Add new starters to see the net change.
- Enter what it costs you to replace someone to see the annual cost of turnover.
What your result means
How to read the figure, what counts as normal, and what to do about it.
Measuring turnover properly
Employee turnover is the share of your workforce that left in a period. Using average headcount rather than the start or end figure stops the ratio being distorted when the team is growing or shrinking. Measure it for the same period every time (a year is standard, a quarter is useful for spotting problems early) and split it by team, tenure and reason for leaving so that the average does not hide a problem in one department.
Distinguish voluntary turnover (people choosing to leave) from involuntary (dismissals, redundancy, end of contract). Voluntary turnover in the first year of employment is the most expensive kind and the clearest sign of a recruitment or onboarding problem.
UK benchmarks
CIPD surveys put average UK employee turnover in the mid-teens, but sector matters enormously:
| Sector | Typical annual turnover |
|---|---|
| Hospitality and catering | 30–40%+ |
| Retail | 25–35% |
| Contact centres | 25–30% |
| Social care | 25–30% |
| Professional services | 12–18% |
| Manufacturing and engineering | 10–15% |
| Public sector | 8–12% |
Some turnover is healthy: it brings in new skills and lets under-performers move on. The cost is in losing people you wanted to keep, which is why exit interview data is worth more than the headline rate.
What replacing someone really costs
The visible costs (job adverts, agency fees of 15–25% of salary, management time in interviews) are often the smaller part. The larger part is lost output: the vacancy period, colleagues covering, and the three to six months a new starter typically takes to be fully productive. For a £30,000 role the total commonly lands between £8,000 and £15,000. Oxford Economics research for the UK put the average at over £30,000 for a professional role once lost productivity is included. Use a figure you can defend for your own roles; even a conservative one usually makes the case for retention spending.
Worked example: a growing agency
The agency started the year with 42 staff and ended with 46. During the year 9 people left and 13 joined. It estimates replacing an employee costs £6,000.
Average headcount = (42 + 46) ÷ 2 = 44. Turnover = 9 ÷ 44 = 20.5%; retention 79.5%.
Estimated cost of turnover: 9 × £6,000 = £54,000. Even halving turnover to the sector norm of around 10% would save roughly £27,000 a year, more than the cost of a pay review or a proper onboarding programme.
Frequently asked questions
What is a good employee turnover rate?
Around 10–15% is typical for most UK office-based businesses; under 10% is low and over 25% is high outside hospitality and retail. Compare against your own sector and, more usefully, against your own trend.
Should I include redundancies and dismissals?
Include them in total turnover, but track voluntary turnover separately. Voluntary leavers tell you about pay, management and culture; involuntary leavers tell you about hiring decisions.
What is the difference between turnover and attrition?
Turnover counts everyone who leaves, whether or not they are replaced. Attrition usually refers to leavers who are deliberately not replaced, a way of shrinking headcount without redundancies.
How do I reduce turnover?
The evidence consistently points to the same levers: fair pay relative to the market, a competent line manager, a clear path to develop, flexible working, and a good first ninety days. Exit and stay interviews will tell you which matters most to your people.
The maths behind this calculator
For anyone who wants to check the working or rebuild it in a spreadsheet.
The formulas
Average headcount = (Start headcount + End headcount) ÷ 2 Turnover rate (%) = Leavers ÷ Average headcount × 100 Retention rate = 100 − Turnover rate Cost of turnover = Leavers × Average replacement cost
Assumptions and limits
- Uses a two-point average of headcount. If headcount fluctuated a lot during the period, average the monthly figures instead.
- Counts leavers, not vacancies: a role left three times in a year counts as three leavers.
- The replacement cost is your estimate; the calculator does not assume a figure.
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