Staffing Cost Percentage Planner methodology

totalStaffingCostExTax = wages + employer on-costs + contractor cost

staffingCostRate = total staffing cost ÷ revenue

targetStaffingCostExTax = revenue × target rate

costGapExTax = total staffing cost − target staffing cost

Money inputs and outputs use the currency selected in the scenario without changing the canonical methodology. Rates, margins, utilisation and buffers are entered as percentages and converted to decimal values for calculation.

• Revenue must be positive and the target rate must remain between 0% and 100%.
• Total cost equals the exact wages, on-cost and contractor sum.
• The signed gap equals actual total less target cost.

Ex-tax revenue minimum

revenueExTax ≥ 0 currency units/reporting period, ex tax — A lower value is rejected before calculation.

Ex-tax revenue maximum

revenueExTax ≤ 10,000,000 currency units/reporting period, ex tax — A higher value is rejected before calculation.

Wages minimum

wagesExTax ≥ 0 currency units/reporting period, ex tax — A lower value is rejected before calculation.

Wages maximum

wagesExTax ≤ 10,000,000 currency units/reporting period, ex tax — A higher value is rejected before calculation.

Employer on-costs minimum

employerOnCostsExTax ≥ 0 currency units/reporting period, ex tax — A lower value is rejected before calculation.

Employer on-costs maximum

employerOnCostsExTax ≤ 10,000,000 currency units/reporting period, ex tax — A higher value is rejected before calculation.

Contractor cost minimum

contractorCostExTax ≥ 0 currency units/reporting period, ex tax — A lower value is rejected before calculation.

Contractor cost maximum

contractorCostExTax ≤ 10,000,000 currency units/reporting period, ex tax — A higher value is rejected before calculation.

Target staffing-cost rate minimum

targetStaffingCostRate ≥ 0 decimal fraction of ex-tax revenue (1 = 100%) — A lower value is rejected before calculation.

Target staffing-cost rate maximum

targetStaffingCostRate ≤ 1 decimal fraction of ex-tax revenue (1 = 100%) — A higher value is rejected before calculation.

• Cost classification and target share are user decisions.
• Wages, on-costs and contractors use the same reporting period as revenue.
• The hospitality module is a labelled scenario of this owner, not a separate benchmark or methodology.

This planner has no current policy-data dependency. Its commercial assumptions are user supplied. Registered family-level regression suites exercise the shared business-logic engine and worked-result reconciliation.

• No productivity, wage, loading, on-cost or staffing benchmark is embedded.
• The model does not interpret awards, classify workers or establish compliance.
• It is educational decision support, not accounting, tax, legal or employment advice.

This is educational decision support, not tax, accounting, legal or financial advice. Check the treatment of your actual transactions under the rules that apply to your business and seek qualified advice where appropriate.

Registered family-level suites test formula invariants and example reconciliation; the release ledger records that coverage without claiming a separate oracle for every line of public copy. There is no official threshold or benchmark to refresh for this planner. Commercial inputs remain user-supplied because they vary by business and contract.

1. 2026-07-31: Initial public release of the planner and methodology after pre-launch calculation, content, source and interaction review.