Calculator/How to Calculate
How to Calculate Employee Turnover Cost: Step-by-Step
The full SHRM-style methodology broken down into 8 cost categories with estimation guidance for each. Includes worked examples at three salary levels and the five most common mistakes that lead to underestimation.
The Core Formula
Total Turnover Cost = Number of Departures x Cost Per Departure
Where Cost Per Departure is the sum of 8 line items:
Recruitment + Interviews + Onboarding + Vacancy + Ramp-up + Knowledge Loss + Team Disruption + Admin
8 Cost Categories with Estimation Guidance
1.Recruitment Costs
Job ad spend + recruiter fee + referral bonus + sourcing time
External recruiter fees typically run 15-25% of first-year salary for professional roles, 25-33% for executive roles. Internal recruiting costs include job board fees ($200-500 per posting on major boards), sourcing time (20-40 hours per hire), and employer branding spend allocated per hire.
$50K salary
$3,000 to $8,000
$100K salary
$15,000 to $25,000
$200K salary
$50,000 to $66,000
2.Interview and Selection Costs
Interviewer hours x loaded hourly rate x number of candidates
A typical interview loop involves 4 to 6 interviewers spending 1 to 2 hours each, repeated across 3 to 5 final-round candidates. Include the hiring manager's time for resume review, phone screens, and debrief meetings. Loaded hourly cost is approximately salary divided by 1,800 plus 30% for benefits.
$50K salary
$1,500 to $3,000
$100K salary
$4,000 to $8,000
$200K salary
$8,000 to $15,000
3.Onboarding and Training Costs
Formal training + buddy/mentor time + equipment + IT setup
Include the cost of any formal training programmes, the time of a buddy or mentor (typically 5-10% of their time for 3 months), equipment and workspace setup costs, IT provisioning, and HR administrative onboarding time. For technical roles, add the cost of access provisioning and security clearance if applicable.
$50K salary
$2,000 to $5,000
$100K salary
$5,000 to $12,000
$200K salary
$10,000 to $25,000
4.Vacancy Cost
Role output value per month x months vacant
The role's output value can be estimated as 1.5 to 2x salary divided by 12 (this accounts for the revenue or value the role generates above its cost). Multiply by the number of months the role sits unfilled. For roles where colleagues absorb work, the vacancy cost shifts to overtime and reduced capacity across the team.
$50K salary
$4,000 to $10,000
$100K salary
$15,000 to $35,000
$200K salary
$40,000 to $80,000
5.Ramp-Up Cost
Salary x (1 - productivity%) x ramp months
New hires typically operate at 25-50% productivity for the first 1 to 3 months and 50-80% for months 3 to 6. The ramp cost is the salary paid during this period minus the productive output delivered. For sales roles, use quota attainment as the productivity proxy. For engineering roles, use code contribution or feature delivery rate.
$50K salary
$4,000 to $8,000
$100K salary
$15,000 to $30,000
$200K salary
$35,000 to $70,000
6.Knowledge Transfer Loss
Estimated value of undocumented knowledge
This is the hardest line item to quantify but often the most significant for senior roles. Consider: how many decisions will need to be re-researched? How many processes will break because the documentation is in someone's head? Estimate the hours of discovery work the team will do over the next 12 months and multiply by loaded hourly cost.
$50K salary
$1,000 to $3,000
$100K salary
$5,000 to $15,000
$200K salary
$15,000 to $40,000
7.Team Disruption Cost
Team productivity reduction x duration + overtime costs
When someone leaves, the remaining team absorbs extra work (usually 2 to 4 months). This leads to overtime, reduced quality, missed deadlines, and engagement decline. Estimate 5-10% productivity reduction across the immediate team for 2 to 4 months. Add any actual overtime costs paid.
$50K salary
$2,000 to $5,000
$100K salary
$8,000 to $20,000
$200K salary
$20,000 to $50,000
8.Administrative Costs
Exit processing + benefits continuation + legal + IT deprovisioning
Include HR time for exit processing (2-4 hours), final payroll calculations, benefits continuation costs (COBRA administration), legal review if applicable, IT deprovisioning (account closure, equipment recovery), and security-related costs. These are the smallest line item but should not be ignored.
$50K salary
$500 to $1,500
$100K salary
$1,000 to $3,000
$200K salary
$2,000 to $5,000
Worked Examples: Total Cost Per Departure
$50,000 salary role
$18,000 - $43,500
0.36x to 0.87x salary
$100,000 salary role
$68,000 - $148,000
0.68x to 1.48x salary
$200,000 salary role
$180,000 - $351,000
0.90x to 1.76x salary
Note: these ranges represent the sum of the 8 line items above. Actual costs will vary based on role type, industry, and hiring market conditions.
5 Common Calculation Mistakes
Using only direct costs
Direct costs (recruiter fees, job ads) are 30-40% of total cost. Ignoring hidden costs understates the problem by 2 to 3x. This makes retention investment look less justified than it actually is.
Ignoring ramp-up time
Assuming a new hire is at 100% productivity on day one is the single biggest estimation error. The average ramp to full productivity is 3 to 6 months for professional roles and 6 to 12 months for sales and executive roles.
Not counting vacancy cost
The role generates value (or it would not exist). Every month it sits vacant is a month of lost output. For revenue-generating roles, this is directly measurable. For support roles, it manifests as overloaded colleagues and reduced service quality.
Using industry averages instead of role-specific data
A 1.5x average replacement cost multiplier may be reasonable cross-industry, but it dramatically understates executive costs (2 to 3x) and overstates support roles (0.5 to 1x). Use role-specific multipliers for any serious calculation.
Forgetting the contagion effect
Research shows that one departure increases the probability of additional departures by 2 to 3x within 6 months. If you are calculating the cost of a single departure without considering the cascade, you are likely understating by 20 to 40%.
When to Use Quick vs Detailed Methodology
Quick estimate (1.5x multiplier)
Good enough for initial conversations, budget planning, and general awareness. Apply a 1.5x salary multiplier for mid-level roles. Adjust to 0.5x for entry-level and 2.5x for senior or executive roles.
Detailed line-item calculation
Required for business cases, board presentations, and retention budget justification. Use the 8-line-item methodology above with your actual data. More work, but it produces defensible numbers that withstand CFO scrutiny.