Variable Commission Rate
What is a variable commission rate?
A variable commission rate is any commission rate that is not fixed — one that changes depending on some condition, most commonly attainment. It is the umbrella term for a family of mechanics: tiered rates, progressive bands, accelerators, decelerators, and sliding scales are all variable rates, varying along different axes.
The reason reps struggle with it is not the concept. It is that they do not know which rate applies to them right now — and in most companies, neither does anyone else without opening a spreadsheet.
What the rate can vary with
What this means?
A single plan can vary the rate along three or four of these axes simultaneously. A rep closing a renewal of a legacy product at 105% attainment is at the intersection of three rules — and the question "what rate applies to this deal?" has an answer that nobody in the company can state from memory.
That is not a training problem. It is why the effective commission rate exists as a concept, and why it belongs on every statement.
The question reps actually ask
A widely-cited rep complaint runs roughly: "the plan says 15/20/25 at under 100, under 125, and 150 plus — so which one am I on?"
The answer requires knowing three things the rep usually does not have: their current attainment (live, not last month's), the application method (does the higher rate re-rate everything, or only the band above?), and whether this particular deal is subject to any other axis of variation.
The rep's assumption is retroactive. The plan is almost always progressive. At 130% attainment on a $1M quota, the rep expects $325,000 and receives $187,500. Both parties then believe the other is being unreasonable.
Why variable rates matter for finance teams
Variable rates are the reason commission expense cannot be forecast by multiplying bookings by a rate. The effective rate depends on where in the distribution each rep lands, and it is convex: a team clustered at 130% costs disproportionately more than a team averaging 130% with half at 90% and half at 170%.
Forecasting commission on an average attainment figure is the single most common modelling error in sales comp, and variable rates are precisely why it fails.
Common mistakes with variable rates
1. Publishing the rates without the application method
"15/20/25" is not a plan. "15/20/25, applied to revenue within each band" is.
2. Varying along too many axes
Rate varies by attainment, deal type, product, and margin, and now no rep can compute their own pay. Complexity is not sophistication; it is a plan that has stopped functioning as an incentive.
3. Never showing the effective rate
The rep's real question is "what percentage did I actually earn?" It is one number, it settles the argument, and almost nobody publishes it.
How Visdum handles variable commission rates
Visdum evaluates every axis of variation — attainment band, deal type, product, account age, margin — automatically from CRM data, so the rate that applies to a deal is determined by the plan rather than by a rep's interpretation of it. Each deal on the statement shows the rate that was applied and why, and the statement shows the rep's realised effective rate alongside the stated bands. That means the rep at 130% sees not just "you were paid $187,500" but the derivation — which is the difference between a variable-rate plan that motivates and one that generates tickets.
Take a self-guided product tour →, or model your plan with the Visdum calculators.
Related terms
Effective Commission Rate · Tiered Commission · Progressive Commission · Rate Table · Accelerator
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Frequently asked questions
What is a variable commission rate?
Any commission rate that changes depending on a condition rather than staying fixed. It is an umbrella term: tiered rates, progressive bands, accelerators, decelerators, and sliding scales are all variable rates. The rate can vary with attainment, deal type, product, account age, deal margin, or deal size — often several of these at once.
If my plan says 15/20/25, which rate do I get?
In almost all plans, all three — applied to different portions of your revenue. 15% applies to revenue up to the first threshold, 20% to revenue in the next band, and 25% only to revenue above the highest one. Reps typically assume the highest band reached applies to everything, which produces an expectation roughly 70% above what the plan will actually pay.
What can a commission rate vary with?
Six common axes: attainment (tiered and progressive structures), deal type (new logo, renewal, expansion), account age (sliding scale), product (strategic weighting or SPIFFs), deal margin (gross margin commission), and deal size (banded rates to manage windfall). A single plan can vary along three or four of these simultaneously.
How do I know what rate applies to a specific deal?
You need three things most reps do not have: your live current attainment, the application method (whether a higher band re-rates everything or only the revenue inside it), and whether the deal is subject to any other axis of variation. If your company cannot tell you the rate before you close the deal, the plan is not functioning as an incentive.
What is the effective commission rate?
Total commission divided by total revenue closed — the rate you actually realised after every band, kicker, decelerator, and clawback has been applied. It is the single number that answers a rep's real question, it always differs from any stated band rate, and almost no company publishes it on the statement.
Why can't commission be forecast by multiplying bookings by a rate?
Because variable rates are convex. The effective rate depends on where in the attainment distribution each individual rep lands, not on the team average. A team clustered at 130% costs disproportionately more than a team averaging 130% with half at 90% and half at 170% — which is why forecasting commission on average attainment is the most common modelling error in sales comp.