This estimates gross commission from your visible plan assumptions. It does not calculate payroll tax, draw reconciliation, clawbacks, bonuses, or employer-specific rules.
Calculation details
Planning estimate only. Platform fees, taxes, payment costs, and policies can change; verify current terms before pricing.
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More options
What does this calculator estimate?
Calculate commission on sales with three methods: a flat commission rate applied to all sales, threshold rates that change when sales reach a set level, or progressive tiers that apply different rates to portions of sales. The sales commission calculator provides an honest, easy-to-check commission and tier breakdown.
How do tiered commissions differ from flat rates?
A flat rate applies one percentage to every dollar of sales. A tiered plan pays different rates once revenue crosses thresholds, and the key question is whether tiers are retroactive (the higher rate applies to all sales) or marginal (only the dollars above the threshold). This calculator handles the marginal structure by default because it is the most common; retroactive plans should be checked by computing both tiers separately.
Should commissions be calculated on revenue or profit?
Revenue-based plans are simpler and standard in most sales roles, but they can reward discounting that destroys margin. Profit-based plans align pay with what the business keeps, yet require reliable cost data and trust in the numbers. If your plan pays on profit, verify the cost basis used, because an inflated cost line quietly reduces every check.
How this calculator works
Formula
Flat mode multiplies all sales by one rate. Threshold mode multiplies only sales above the threshold. Progressive tier mode applies each tier rate only to the sales amount inside that tier, then sums the tier commissions.
Worked example
For $40,000 in sales with 3% on the first $10,000, 5% from $10,000 to $25,000, and 7% above $25,000, commission is $300 + $750 + $1,050 = $2,100, an effective rate of 5.25%.
Assumptions to verify
- Tiered mode is progressive and does not retroactively apply the highest reached rate to all sales.
- Threshold mode pays only on the portion above the entered threshold.
- Payroll tax, draws, caps, bonuses, returns, clawbacks, and contract eligibility are excluded.
Frequently asked questions
How do you calculate flat commission?
Multiply total sales by the flat commission rate, then divide by 100. The same rate applies to every dollar of sales.
How does threshold commission work?
Sales below the threshold use the lower rate. At or above the threshold, the higher rate applies to the eligible sales defined by the plan.
How is tiered commission calculated?
Each rate applies only to the portion of sales within its tier. Add the commission from every tier to get total commission.
Cite this tool
BoringToolsKit. “Commission Calculator.” boringtoolskit.com/commission-calculator/ (reviewed July 2026). Free to reference in articles, syllabi, and answer posts with a link.
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