Almost every HR report has a turnover number in it, and almost every leadership meeting has someone asking whether it is good or bad. The honest answer is that the number means little until you know how it was calculated and what it is being compared with. This guide covers the formula, the variations worth tracking, and what to do once you have the figure.
What is employee turnover rate?
Employee turnover rate is the percentage of your workforce that leaves during a period, usually a year. It counts people who resign, are dismissed, retire or otherwise end their employment, and it is measured against the average size of your team over the same period.
The basic formula
The standard calculation is:
Turnover rate = (number of separations ÷ average headcount) × 100
Average headcount is the headcount at the start of the period plus the headcount at the end, divided by two. A worked example:
- Headcount on January 1: 120.
- Headcount on December 31: 130, so the average is 125.
- Employees who left during the year: 20.
- Turnover rate: 20 ÷ 125 × 100 = 16%.
Use the same definition every time. If one report counts interns and another does not, the trend will mislead you.
Voluntary vs involuntary turnover
A single total hides the most useful information, which is why people left.
- Voluntary turnover covers resignations and retirements, where the employee chose to go.
- Involuntary turnover covers dismissals, redundancies and end-of-contract decisions made by the employer.
In the example above, say 14 of the 20 leavers resigned and 6 were let go. Voluntary turnover is 14 ÷ 125 = 11.2%, and involuntary turnover is 6 ÷ 125 = 4.8%. These point to different problems. High voluntary turnover suggests issues with pay, management, workload or growth. High involuntary turnover suggests problems in hiring or onboarding. Many teams also separate out regretted losses, meaning people you would have liked to keep, because losing a top performer is not the same as losing someone in a role you were about to restructure.
Annual vs monthly turnover
You can calculate turnover for any period. The formula stays the same, only the window changes.
- Annual is the most common and the easiest to compare with other companies.
- Monthly or quarterly helps you spot a problem early, but a single month is noisy, especially in a small team.
If three people leave in a month and your average headcount is 125, monthly turnover is 2.4%. Multiplying by twelve gives roughly 29% annualised, but that overstates things if the month was unusual. For a steadier view, use a rolling twelve-month figure that is recalculated every month.
New-hire turnover
New-hire turnover, sometimes called early attrition, tracks people who leave soon after joining. A common version is: the number of hires who left within 90 days, divided by the number of hires in that group.
If you hired 30 people during the year and 6 left within their first 90 days, new-hire turnover is 20%. This number is worth watching on its own because it points to hiring and onboarding rather than to the wider culture. If people leave quickly, the cause is often a mismatch between the job as advertised and the job as experienced, or a weak first few weeks.
So what is a good turnover rate?
There is no universal good number, and anyone quoting one without context should be treated with caution. Some caveats when you read benchmarks:
- Industry matters a great deal. Hospitality, retail and call centres typically see much higher turnover than government, education or utilities.
- Role matters. Entry-level and seasonal roles turn over faster than senior or specialist ones.
- Company size matters. In a team of ten, one departure is 10%.
- Definitions differ. Some published figures include only voluntary exits, some include retirements, some exclude temporary staff.
- Some turnover is healthy. A rate of zero can mean people are staying because they have nowhere to go, and fresh ideas rarely arrive.
A better benchmark is your own history. Compare this year with the last three, compare departments with each other, and compare against a peer group in your industry and region using the same definition. A rise matters more than the absolute level.
What to do with the number
- Break it down by department, manager, tenure band and role. An overall 16% can hide one team at 40%.
- Separate voluntary from involuntary and regretted from non-regretted.
- Read exit interviews and stay interviews for patterns, not single complaints.
- Put a rough cost on it. Replacing someone often costs a meaningful share of their annual salary once recruiting, training and lost productivity are counted.
- Pick one or two actions, such as improving onboarding or training managers, and check whether the rate moves over the next two quarters.
If you currently build this report by hand from spreadsheets, FulcrumGrid HR Suite keeps employee records, start and end dates and leaving reasons in one place, so headcount and separations are easier to pull consistently. A well-kept spreadsheet works too, as long as the definitions stay fixed.
Calculate it the same way every time, break it down, and use it to ask better questions rather than to pass judgement.
Frequently asked questions
How do you calculate employee turnover rate?
Divide the number of employees who left during the period by your average headcount for that period, then multiply by 100. Average headcount is the start and end headcount added together and divided by two.
What is a good employee turnover rate?
It depends on your industry, roles and size. Compare yourself with your own history and with peers using the same definition, and watch the trend and the reasons rather than a single universal target.
Is high turnover always bad?
No. Losing underperformers or people in roles you are restructuring can be healthy. The worry is high voluntary turnover among people you wanted to keep.
What is the difference between turnover and attrition?
They are often used interchangeably. Attrition sometimes means leavers who are not replaced, while turnover usually counts every departure whether or not the role is refilled.
FulcrumGrid HR Suite
Keep headcount and leavers in one place
FulcrumGrid HR Suite keeps employee records, dates and leaving reasons together, so turnover figures are easier to calculate the same way every time.