Configuration

Preset i Months i

Share / restore

Hours per month i New external rate (€/h) i

Baseline external rate (€/h) i Internal mentor rate (€/h) i

Procurement / onboarding hours i Extra fixed costs (€) i

Value delay estimate (optional) i

Cost of delay (€/week) i Value-critical share (%) i

DelayWeeks ≈ (OutputGapHours × ValueCriticalShare) ÷ BaselineWeeklyHours, where BaselineWeeklyHours ≈ HoursPerMonth ÷ 4.

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Result

Replacement premium (Δ vs baseline) i

Premium = rate delta + (output gap × baseline rate) + internal mentoring + onboarding + extra fixed costs. Optional: add a conservative value-delay estimate (opportunity cost) below.

Value delay estimate

Total impact (premium + delay)

Total cost (new) i

External spend + internal cost + extra fixed costs

Equivalent cost (100% output) i

Total × billed/effective

Baseline cost i

Baseline rate × billed hours

Cost per effective hour

Total / effective hours

Billed hours

Hours per month × months

Effective hours

Hours per month × Σ(productivity)

Output gap (hours)

Billed − effective

Output loss (valued at baseline)

Output gap × baseline rate

Estimated delay (weeks) i

≈ (gap × share) ÷ (hoursPerMonth/4)

Value delay cost i

CoD/week × delay weeks

Total impact i

Premium + delay

Delay share used i

From configuration

Rate delta

(New rate − baseline) × billed hours

External spend (new)

New rate × billed hours

Mentoring cost

Mentor rate × Σ(mentoring hours)

Onboarding + fixed costs

Internal onboarding + external one-offs

Model

BilledHours = hoursPerMonth × months

EffectiveHours = hoursPerMonth × Σ(productivity)

OutputGap = billed − effective

TotalCostNew = (newRate × billedHours) + mentoringCost + onboardingCost + extraFixedCosts

Equivalent100% = TotalCostNew × (billedHours / effectiveHours)

ReplacementPremium = (newRate − baselineRate) × billedHours + (outputGap × baselineRate) + mentoringCost + onboardingCost + extraFixedCosts

BaselineWeeklyHours ≈ hoursPerMonth ÷ 4

DelayWeeks ≈ (outputGap × (valueCriticalShare/100)) ÷ BaselineWeeklyHours

ValueDelayCost = DelayWeeks × costOfDelayPerWeek

TotalImpact = ReplacementPremium + ValueDelayCost