Turnover rate measures the percentage of employees who leave an organization over a specific period, typically a month or a year. It’s one of the most watched metrics in human resources because it directly reflects how well a company retains its workforce and how much it spends replacing people who leave. The average cost of replacing a single employee has climbed to $45,236, according to a 2026 Express Employment Professionals-Harris Poll survey, making turnover one of the most expensive ongoing costs a business faces.
How to Calculate Turnover Rate
The formula is straightforward: divide the number of employees who left during a period by the average number of employees during that same period, then multiply by 100. If 15 people left your company last quarter and you had an average of 200 employees, your turnover rate for that quarter is 7.5%.
Average headcount is used instead of a single snapshot because workforce size fluctuates. The simplest way to find it is to add your headcount at the start of the period to your headcount at the end, then divide by two. So if you started January with 190 employees and ended with 210, your average is 200.
Most companies calculate turnover monthly or annually. Monthly rates are useful for spotting sudden spikes, while annual rates give a clearer picture for benchmarking against your industry. To annualize a monthly figure, you can multiply it by 12, though tracking the full year’s departures against average headcount is more precise.
Voluntary vs. Involuntary Turnover
Not all departures mean the same thing, which is why HR teams split turnover into two categories.
Voluntary turnover counts employees who left by choice. That includes resignations (someone takes a new job, changes careers, or leaves for personal reasons) and retirements. This is the number that most concerns employers because it often signals dissatisfaction with pay, management, growth opportunities, or culture.
Involuntary turnover covers employees the company let go. Terminations for poor performance or misconduct fall here, along with layoffs driven by budget cuts or restructuring. Job abandonment, where someone stops showing up without formally resigning, also counts as involuntary.
Tracking these separately matters because they require different responses. A spike in voluntary turnover might point to a compensation problem or a toxic manager. A spike in involuntary turnover might signal a hiring process that’s bringing in the wrong people. Lumping both together can mask the real story behind your numbers.
What Counts as a High or Low Rate
Turnover varies enormously by industry, so there’s no single “good” number. Bureau of Labor Statistics data from February 2026 shows total separations rates (which include all forms of turnover) that illustrate the range:
- Retail trade: 4.3% monthly
- Information (which includes tech): 3.9% monthly
- Health care and social assistance: 2.6% monthly
Those are monthly figures, so annualized rates run significantly higher. Retail and hospitality have historically had the highest turnover because of seasonal hiring, part-time roles, and lower wages. Industries with specialized skills and longer training periods, like health care, tend to hold onto workers longer. The most useful comparison is your own rate over time and against competitors in your specific sector, not against a universal benchmark.
Why Turnover Is So Expensive
The $45,236 average replacement cost captures several layers of spending that aren’t always obvious. Recruiting costs include job postings, recruiter fees, and the time hiring managers spend interviewing. Onboarding costs include training, equipment, and the administrative overhead of bringing someone into your systems. Then there’s the productivity gap: new hires typically take months to reach the output level of the person they replaced, and during that ramp-up period, coworkers often absorb extra work.
For highly specialized or senior roles, replacement costs can run well above that average, sometimes reaching one to two times the departing employee’s annual salary. For entry-level positions, the cost is lower but still meaningful when multiplied across dozens or hundreds of departures per year. A retail chain with 500 employees and a 50% annual turnover rate is replacing 250 people a year, and even modest per-person costs add up fast.
Beyond direct costs, high turnover erodes institutional knowledge. When experienced employees leave, they take relationships, process understanding, and problem-solving shortcuts with them. That loss is harder to quantify but often more damaging than the recruiting bill.
What Drives Employees to Leave
Voluntary turnover rarely comes down to a single factor. The most common drivers are compensation that hasn’t kept pace with the market, limited opportunities for advancement, poor relationships with direct managers, and burnout from excessive workloads or rigid schedules. Employees who don’t see a future at the company, or who feel their contributions go unrecognized, are far more likely to start looking elsewhere.
On the involuntary side, the root cause often traces back to hiring. When job descriptions are vague or interviewers don’t assess for cultural fit, companies end up with employees who aren’t set up to succeed. Poor onboarding compounds the problem by leaving new hires without the training or context they need to perform.
Practical Ways to Reduce Turnover
Retention starts before someone’s first day. Behavioral interview questions, the kind that ask candidates how they’ve handled real situations like sudden changes or conflicting priorities, help identify people whose working style fits the role and the team. A better hiring process reduces the involuntary turnover that comes from bad matches.
Early onboarding is a critical window. New employees who understand the company’s mission and can see how their work connects to it are more likely to stay past the first year. That means going beyond paperwork and compliance training to give people a clear picture of what success looks like in their role and how they’ll be supported.
Recognition doesn’t have to be elaborate to be effective. Managers who regularly acknowledge strong work, whether through a quick message, a team shoutout, or a formal reward program, create an environment where employees feel valued. Training managers specifically on how to give recognition is often more impactful than launching a company-wide program without buy-in from team leads.
Career development is consistently one of the top reasons employees stay or go. Regular one-on-one meetings where managers discuss an employee’s goals, and then connect those goals to real opportunities within the company, signal that growth is possible without leaving. Offering budgets for conferences, courses, or certifications reinforces that commitment.
Flexible scheduling and benefits that support life outside work also move the needle. Options like remote or hybrid arrangements, generous parental leave, or travel stipends help employers stand out, especially in competitive labor markets where base salary alone may not differentiate one offer from another.
When Some Turnover Is Healthy
A turnover rate of zero isn’t the goal. Some departures are natural and even beneficial. Retirements create room for internal promotions. Letting go of consistent underperformers raises the bar for the rest of the team. And employees who leave for opportunities that genuinely don’t exist at your company free up roles for people who are a better long-term fit.
The concern is when turnover is higher than your industry norm, concentrated among your top performers, or clustered in a specific department or under a specific manager. Those patterns point to solvable problems. Tracking your rate consistently, broken out by voluntary and involuntary and by team, gives you the data to spot those patterns before they become a crisis.