Sales Commission Calculator
Calculate sales commission earnings with a flat rate — or add an accelerator that pays a higher rate on sales above your quota.
Set the accelerator rate above your quota to see the real upside of over-performance — that's where top reps make their money.
Comprehensive Guide & Formulas
Flat & tiered commission
Key Takeaways & Benchmarks
- ✓Total commission = base rate on all sales + accelerator rate on overage.
- ✓Quota attainability matters more than the headline rate.
- ✓Accelerators concentrate rewards beyond quota — that's where top reps earn.
- ✓Get commission terms in writing, including clawback windows.
- ✓Model realistic attainment, not the brochure scenario.
How commission math works
Commission aligns your pay with revenue you generate: a percentage of each sale, paid on top of (or instead of) base salary. The base rate applies to all sales; accelerators add a premium rate on sales above quota to make over-performance disproportionately rewarding.
The details that matter most aren't the headline rate but the quota's realism, the accelerator tiers, and clawback terms. A 10% rate on an unattainable quota is worth less than 5% on a fair one — always model your likely attainment, not the brochure scenario.
- 1Enter total sales
Your sales for the period.
- 2Set the base rate
The standard commission percentage.
- 3Add quota and accelerator
The threshold and premium rate above it.
- 4Read your earnings
Base, bonus, total and effective rate.
The formula
Worked example
$75,000 in sales at a 5% base rate with a $50,000 quota and 8% accelerator: base commission is $3,750, the $25,000 overage earns $2,000 at the accelerator rate, for $5,750 total — an effective rate of 7.7%.
Without the accelerator, the same performance pays only $3,750. The $2,000 difference is the entire point of accelerators: they concentrate rewards exactly where the company wants effort — beyond quota.
Reading your comp plan
- ▸Get the plan in writing — verbal commission promises are worthless in disputes.
- ▸Check whether tiers apply per-band or retroactively; it changes everything.
- ▸Understand clawback windows before celebrating big bookings.
- ▸Ask what percentage of reps hit quota — below 60% suggests the quota, not the reps, is the problem.
- ▸Model your realistic attainment here, not the top-performer story.
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Frequently asked questions
How is sales commission calculated?+
Multiply sales by the commission rate: $75,000 at 5% earns $3,750. With an accelerator — say 8% on everything above a $50,000 quota — the same sales earn $3,750 + $2,000 = $5,750. This calculator handles both the flat and tiered math.
What is a typical sales commission rate?+
It varies enormously: 5–10% is common in many B2B roles, 20–30%+ in high-margin software or insurance, and lower percentages on very large deal sizes. What matters more than the rate is the quota's attainability — a generous rate on an impossible quota pays nothing.
What is a commission accelerator?+
A higher rate paid on sales above quota (or above 100% attainment), designed to reward over-performance. Accelerators of 1.5–2× the base rate are common. They're where top performers make real money — model yours above by setting the quota and accelerator rate.
What is a commission clawback?+
When a customer cancels or churns, the company 'claws back' the commission already paid on that deal. Clawback windows of 6–12 months are typical in SaaS. Always understand your plan's clawback terms — booked commission isn't truly earned until the window closes.
Are commissions taxed differently?+
No — commissions are ordinary income, though employers often withhold at the flat 22% supplemental rate, which may differ from your actual marginal rate. You'll settle the difference at tax time. The Tax Calculator estimates your real liability on total income.
What is a draw against commission?+
A guaranteed advance paid each period, deducted from future commissions — common for ramping new reps. A recoverable draw must be repaid if commissions fall short; a non-recoverable draw doesn't. Know which kind you're signing.
How do tiered commission structures work?+
Rates increase at sales thresholds: e.g. 5% to $50k, 7% to $100k, 10% beyond. Each tier applies to sales within its band (or sometimes retroactively to all sales — a huge difference). Get the plan document and model the exact bands before counting on the upside.
Should I take a higher base salary or higher commission?+
If you consistently exceed quota, higher commission usually wins — top reps often earn 2–3× their base. If you're ramping, new to the territory, or the quota looks aggressive, favour base salary for stability. Honestly assess your likely attainment, then run both scenarios here.
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