Commission Calculator methodology

commissionAmount = salesAmount × commissionRate

totalPay = basePay + salesAmount × commissionRate

commissionAmount = firstTierAmount × firstTierRate + secondTierAmount × secondTierRate + topTierAmount × topTierRate

totalPay = basePay + commissionAmount

Money inputs and outputs use the currency selected in the scenario without changing the canonical methodology. Pay, time, benefits and work-related costs use the units stated beside each input.

• Zero sales produce zero commission.
• Flat mode applies one rate to all commissionable sales.
• Tiered mode applies each rate only to its marginal sales slice.
• Tier bounds stay increasing and rates remain within the engine bound.

• The entered sales amount is fully commissionable.
• Tiered mode uses two entered bounds followed by one open-ended top tier.
• Amounts are gross before tax.

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

• Actual crediting, returns and timing may differ.
• Draws, clawbacks, caps and more than three tiers are not modelled.
• The result does not predict sales performance.

This is educational decision support, not personalised tax, legal, financial or career advice. Check the treatment of your circumstances under the rules that apply to you 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 calculator. Work and pay inputs remain user-supplied because they vary by person, job and contract.

1. 2026-07-27: Initial public release of the Commission planner and methodology.