To calculate employee turnover rate, divide the number of employees who left during a period by the average number of employees during that same period, then multiply by 100. For example, if 5 employees left during a month and your average headcount was 100, your turnover rate is 5%. The formula is simple, but getting accurate inputs and knowing which version of turnover to track takes a bit more care.
The Standard Turnover Formula
The basic calculation works for any time period, whether you’re measuring monthly, quarterly, or annually:
Turnover Rate = (Number of Separations ÷ Average Number of Employees) × 100
To find the average number of employees, add your headcount at the beginning of the period to your headcount at the end, then divide by two. If you started January with 200 employees and ended with 210, your average is 205. If 12 people left during January, your monthly turnover rate is (12 ÷ 205) × 100 = 5.85%.
For annual turnover, you can either add up all separations over 12 months and divide by the average headcount for the full year, or you can sum your 12 monthly turnover rates. The first approach is more common because it’s simpler and avoids compounding small rounding differences across months.
One important detail: “separations” means employees who actually left your payroll. Workers on temporary layoff, furlough, or leave of absence are still technically employed and should not be counted as separations.
Voluntary vs. Involuntary Turnover
Your overall turnover number is useful, but splitting it into voluntary and involuntary categories tells you much more about what’s happening in your organization.
Voluntary turnover covers employees who chose to leave. That includes people who resigned for a new job, left for personal reasons, went back to school, or retired. Deaths are also typically grouped here, since the employer didn’t initiate the separation.
Involuntary turnover covers separations the employer initiated while the employee was willing and able to keep working. Terminations for poor performance, behavioral issues, seasonal layoffs, and reductions in force all fall into this bucket.
The formulas are identical to the standard one. You just swap in the relevant number:
- Voluntary Turnover Rate = (Voluntary Separations ÷ Average Employees) × 100
- Involuntary Turnover Rate = (Involuntary Separations ÷ Average Employees) × 100
Tracking these separately matters because the causes and solutions are completely different. A high voluntary rate suggests problems with compensation, culture, management, or growth opportunities. A high involuntary rate might point to hiring mistakes or unclear performance expectations. If you only look at the combined number, you can’t diagnose the problem.
New Hire Turnover Rate
New hire turnover isolates how many recently hired employees leave within a set window, typically the first 90 days or first year. This metric reveals whether your recruiting, onboarding, or job descriptions are setting accurate expectations.
New Hire Turnover Rate = (New Hires Who Left During the Period ÷ Total New Hires During the Period) × 100
If you hired 40 people in Q1 and 8 of them left before the end of Q2, your new hire turnover rate for that cohort is 20%. A high rate here is a red flag that something breaks down early in the employee experience, whether that’s a mismatch between the job posting and the actual role, a weak onboarding process, or a manager who isn’t supporting new team members.
How Your Rate Compares
Turnover varies enormously by industry, so comparing your rate to a national average isn’t particularly useful. Instead, benchmark against your own sector. The Bureau of Labor Statistics publishes monthly separation rates through its Job Openings and Labor Turnover Survey (JOLTS). As a reference point, monthly total separation rates for major sectors in early 2026 were:
- Leisure and hospitality: 5.5%
- Retail trade: 4.3%
- Information: 3.9%
- Health care and social assistance: 2.6%
These are monthly rates. To roughly annualize a monthly rate, multiply by 12. That puts leisure and hospitality at around 66% annual turnover, which is normal for an industry built on seasonal and part-time work. Health care and social assistance, at roughly 31% annualized, reflects a more stable workforce but still significant churn.
If your rate is significantly higher than your industry average, it’s worth investigating. If it’s lower, that’s generally a sign of strong retention, though extremely low turnover can also signal stagnation if underperformers aren’t being managed out.
What Each Departure Actually Costs
Understanding the financial weight behind your turnover percentage helps justify spending on retention. The total cost of replacing someone includes both direct expenses and harder-to-measure productivity losses.
Direct costs include job postings, recruiter or staffing agency fees, background checks, onboarding software, training development, equipment, and sometimes signing bonuses or relocation packages. These are easy to track because they show up in your budget.
Indirect costs are harder to quantify but often larger. When someone leaves, the remaining team absorbs extra work, which slows output and can drag down morale. Managers spend hours interviewing candidates instead of doing their regular jobs. Institutional knowledge walks out the door. And even after you hire a replacement, it takes months before a new employee reaches full productivity.
Estimated replacement costs vary by role level. Entry-level positions typically cost $3,000 to $6,000 per departure. Midlevel roles run $6,000 to $12,000. Technical staff replacements can cost $10,000 to $20,000, and replacing a top executive can exceed $50,000. Multiply those figures by your annual separations and the business case for reducing turnover becomes concrete quickly.
Putting the Numbers to Work
Calculating turnover once gives you a snapshot. Calculating it consistently over time gives you a trend, which is far more valuable. Set a regular cadence, whether monthly or quarterly, and track overall, voluntary, involuntary, and new hire turnover separately.
Break the data down further by department, manager, location, or job level. A company-wide rate of 15% might mask the fact that one team is running at 40% while others are nearly flat. That kind of granularity points you directly to the problem.
Pair turnover data with exit interview themes. If your voluntary rate spikes in a quarter and exit interviews consistently mention compensation, you have a clear signal. If involuntary turnover rises after a change in hiring criteria, that connection is worth exploring too. The formula is just arithmetic. The real value comes from using it consistently, slicing it the right ways, and connecting it to the decisions that drive people to stay or leave.