Agency Blended Rate Planner methodology

minimumBlendedRate = minimum revenue ÷ productive hours

totalHours = senior hours + junior hours

productiveHours = total hours × target utilisation

deliveryCost = senior cost + junior cost + project overhead

blendedCostRate = delivery cost ÷ total hours

utilisationAdjustedCostRate = delivery cost ÷ productive hours

minimumRevenue = delivery cost ÷ (1 − target margin)

targetContribution = minimum revenue − delivery 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.

• Inputs must be finite and remain within the visible boundaries.
• Rates are decimal values and all monetary inputs use one consistent currency and period.
• Whole operational capacity is rounded only where the engine explicitly applies floor or ceiling.

Senior hours minimum

seniorHours ≥ 0 hours/project — A lower value is rejected before calculation.

Senior hours maximum

seniorHours ≤ 10,000,000 hours/project — A higher value is rejected before calculation.

Senior cost per hour minimum

seniorCostPerHour ≥ 0 currency units/hour — A lower value is rejected before calculation.

Senior cost per hour maximum

seniorCostPerHour ≤ 10,000,000 currency units/hour — A higher value is rejected before calculation.

Junior hours minimum

juniorHours ≥ 0 hours/project — A lower value is rejected before calculation.

Junior hours maximum

juniorHours ≤ 10,000,000 hours/project — A higher value is rejected before calculation.

Junior cost per hour minimum

juniorCostPerHour ≥ 0 currency units/hour — A lower value is rejected before calculation.

Junior cost per hour maximum

juniorCostPerHour ≤ 10,000,000 currency units/hour — A higher value is rejected before calculation.

Project overhead minimum

projectOverhead ≥ 0 currency units/project — A lower value is rejected before calculation.

Project overhead maximum

projectOverhead ≤ 10,000,000 currency units/project — A higher value is rejected before calculation.

Target utilisation minimum

targetUtilisation ≥ 0 proportion of paid agency capacity billable — A lower value is rejected before calculation.

Target utilisation maximum

targetUtilisation ≤ 0.99 proportion of paid agency capacity billable — A higher value is rejected before calculation.

Target margin minimum

targetMargin ≥ 0 proportion of project fee retained as contribution — A lower value is rejected before calculation.

Target margin maximum

targetMargin ≤ 0.99 proportion of project fee retained as contribution — A higher value is rejected before calculation.

• All costs, prices, hours, probabilities and volumes are user-supplied; no market benchmark is inferred.
• Tax is outside these neutral commercial comparisons.
• The engine retains full precision; formatting never feeds back into calculation.

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.

• The model does not predict demand, delivery performance, contract enforceability or customer behaviour.
• It does not replace accounting, tax, legal or financial 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.