How to Calculate the True Cost of Employee Turnover

Why Standard Turnover Cost Metrics Fail

Most organizations measure the cost of turnover by looking only at direct replacement costs: recruiter fees, job board postings, and onboarding materials. But this only represents about 30% of the true financial impact.

The real damage happens in the Unproductivity Window—the period before the departing employee leaves, the time the seat sits empty, and the ramp-up time for the new hire.

The Hidden Costs of Attrition

• Lost Productivity: Departing employees often disengage weeks before resigning.
• Vacancy Tax: The work doesn't stop. It gets pushed onto your remaining top performers, accelerating burnout and contagion risk.
• Ramp-up Time: A new hire typically takes 3 to 6 months to reach the productivity level of the person who left.

Using a Predictive Model

To accurately project your financial leakage, you need a model that accounts for your company stage, the average tenure of departing employees, and whether you are losing top performers or average contributors.

Instead of relying on generic industry benchmarks, you need to plug your specific headcount, annual departures, and salary bands into a dynamic calculator to see your true risk exposure.