How to Calculate Employee Turnover Rate

 

How to Calculate Employee Turnover Rate (With Formula + Benchmarks)

Three people quit last month. Is that normal, or is it a warning sign? You can't answer that question with a gut feeling — you need a number and to know what "good" looks like for your industry.

This guide walks through the exact formula for calculating turnover rate, how to avoid the most common calculation mistakes, and current benchmarks so you can tell whether your number is a problem or just noise.

What Is Employee Turnover Rate?

Employee turnover rate is the percentage of employees who leave your organization over a given period of time — usually a month, quarter, or year. It's one of the simplest HR metrics to calculate, but it's also one of the most misused, because most people skip a critical step: using average headcount instead of a single snapshot.

The Turnover Rate Formula

Here's the standard formula:

Turnover Rate = (Number of Separations ÷ Average Headcount) × 100

Average headcount is calculated by adding your headcount at the start of the period to your headcount at the end, then dividing by two:

Average Headcount = (Starting Headcount + Ending Headcount) ÷ 2

Worked Example

Say your company started the quarter with 200 employees and ended with 220. During that quarter, 18 people left (voluntarily or involuntarily).

1. Average headcount = (200 + 220) ÷ 2 = 210
2. Turnover rate = (18 ÷ 210) × 100 = 8.6%

That's your quarterly turnover rate. If you want to compare it against annual benchmarks, don't just multiply by 4 — that overstates the real annualized number. Instead, use a compounding formula:

Annualized Rate = 1 − (1 − Monthly or Quarterly Rate)^(periods per year)

For the example above: 1 − (1 − 0.086)^4 ≈ 30.4% annualized — noticeably lower than the naive 34.4% you'd get from simple multiplication. This matters most when reporting monthly rates annualized, where the gap compounds further.

Voluntary vs. Involuntary vs. Total Turnover

Not all departures mean the same thing, so don't lump them together when reporting:

• Voluntary turnover — resignations, retirements. This is the number leadership usually cares most about, since it reflects whether people want to stay.
• Involuntary turnover — layoffs, terminations, performance-based exits. A rate that runs well above your industry's typical layoff/discharge rate can point to hiring or management issues rather than market conditions.
• Regrettable turnover — high performers or hard-to-replace employees leaving voluntarily. This is arguably the most important number to track, even though it's the least commonly reported.
• Early turnover — employees who leave within their first 90 days. This one points straight at hiring and onboarding, not general culture.

Track these separately. A company with 20% total turnover made up mostly of retirements and low-value early exits is in a very different position than one losing its best mid-career people.

What's a "Good" Turnover Rate? 2026 Benchmarks

There's no single universal target — a rate that's healthy in retail would be alarming in software. That said, a few reference points are useful:

• Cross-industry average voluntary turnover sits around 13%, according to recent Mercer survey data — a notable cooldown from the elevated rates seen during 2022–2023.
• Total turnover (voluntary + involuntary combined) tends to run meaningfully higher, commonly cited in the high-teens to low-20% range depending on the data source and year.
• By industry, the spread is wide. Lower-turnover sectors like insurance, finance, and government tend to land in the high single digits to high teens. Retail, hospitality, and food service run dramatically higher — hospitality in particular is frequently cited in the 50–80%+ range annually, since the sector includes large volumes of part-time and seasonal roles.
• By tenure, roughly a quarter to a third of new hires leave within their first year, and a large share of all voluntary turnover comes from employees with less than two years of tenure — which is why onboarding quality has an outsized effect on your overall number.

Because benchmark figures vary by source, methodology, and year, treat these as directional. The most useful benchmark is usually your own trend line: is your rate going up, down, or holding steady compared to your own historical average?

How to Use This Number

Once you know your rate, the real value comes from breaking it down:

1. Segment by department, manager, and tenure band. A healthy company-wide average can hide a team that's bleeding people.
2. Separate voluntary from involuntary. They require completely different responses.
3. Track it monthly, not just annually. Annual numbers smooth out spikes that would otherwise tell you exactly when and where a problem started.
4. Pair it with cost data. Replacing an employee typically costs a meaningful fraction of their annual salary once recruiting, onboarding, and lost productivity are factored in — which turns a percentage into a number your leadership team will actually act on.

The Bottom Line

Turnover rate is easy to calculate and easy to get wrong. Use average headcount, not a single snapshot. Separate voluntary from involuntary. And judge your number against your own industry and your own history — not a generic 10% rule of thumb that may not apply to you at all.

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