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Workforce Planning Yearly Cost Estimator

The Workforce Planning Yearly Cost Estimator builds a simplified annual workforce cost from current headcount, planned growth hires, expected replacement hires, average annual compensation, and recruiting cost per hire. It separates recurring employee compensation from the one-time recruiting cost associated with planned and replacement hiring.

This gives finance, HR, and operating teams a quick budget baseline for a workforce plan before more detailed timing, benefits, vacancy, or departmental models are applied. Because the calculator assumes a full-year compensation cost for the ending planned workforce, it is most useful as a steady-state annual run-rate estimate rather than a month-by-month payroll forecast.

Calculator inputs

people
hires
%
USD
USD
Result
—
Estimated yearly workforce plan cost
Expected replacement hires—
Annual compensation run rate—
Planned recruiting cost—

1. Enter current headcount
Use the workforce population covered by this plan.

2. Add planned growth hires
Enter net new positions you expect to add beyond replacement hiring.

3. Estimate annual attrition
Use the expected percentage of current employees who will need replacement during the year.

4. Enter average compensation
Use a consistent annual compensation figure for the planned workforce population.

5. Add recruiting cost per hire
Enter the average direct recruiting cost for both growth and replacement hires, then review the annual run-rate estimate.

Expected replacement hires = Current headcount × Attrition ratePlanned ending workforce = Current headcount + Growth hiresAnnual compensation run rate = Planned ending workforce × Average annual compensationRecruiting cost = (Growth hires + Replacement hires) × Recruiting cost per hireYearly workforce plan cost = Compensation run rate + Recruiting cost

Where:

Current headcount = employees in scope today
Growth hires = net new positions to add
Attrition rate = expected annual departure share of current headcount
Average annual compensation = annual compensation cost per planned employee, in dollars
Recruiting cost per hire = direct recruiting cost per completed hire, in dollars

Assumptions: Replacement hiring is modeled as maintaining current headcount, while growth hires increase ending workforce. Compensation is a full-year run-rate for the planned ending workforce and does not prorate hire dates.

What the result means

Use the headline result as a planning estimate based on the inputs and assumptions shown above.

Keep all inputs on a consistent period, cohort, and unit basis when comparing scenarios.

Given:
Current headcount = 220
Planned growth hires = 30
Expected attrition = 12%
Average annual compensation = $85,000
Recruiting cost per hire = $6,500

Calculation:
Replacement hires = 220 × 0.12 = 26.4
Planned ending workforce = 220 + 30 = 250
Compensation run rate = 250 × $85,000 = $21,250,000
Recruiting cost = (30 + 26.4) × $6,500 = $366,600
Total = $21,250,000 + $366,600 = $21,616,600

Result:
Estimated yearly workforce plan cost = $21,616,600

The result represents a steady-state annual compensation run rate plus recruiting cost for planned growth and expected replacements.

Why are replacement hires not added to ending headcount?

Replacement hires fill positions vacated through attrition, so they preserve current headcount rather than create net growth. Planned growth hires are the positions that increase the workforce size.

Does the compensation figure include benefits?

Use the annual compensation definition that matches your planning process. If benefits and employer taxes are included in your average figure, the result includes them; otherwise it does not.

Why does the model use a full-year compensation run rate?

It is designed as a steady-state annual planning view. A cash payroll forecast would need hire dates, departures, raises, and partial-year timing.

Can attrition exceed 100%?

This calculator limits annual attrition to 100% of current headcount for a simple one-replacement-per-current-position model. More complex high-turnover staffing models require repeated replacement cycles.

How should I use this with a capacity plan?

Use the yearly cost estimate to understand budget implications, then compare planned headcount with workload or demand in a capacity-gap model.