Sales commission accelerators: how they work and what they cost
By Mustafa Ebiclioglu, Founder of CompSlate · · 9 min read
"1.5x above 100%" is the most common line in a startup commission plan, and one of the most misread. Some founders think it multiplies the whole quarter's commission once a rep passes quota. Some reps think so too, which is worse.
This guide works through how an accelerator really pays, how to add tiers, caps and decelerators, and what an accelerator costs you across a team. The same AE, Ana, runs through every example: $150K OTE at a 60/40 split, a $600K annual quota measured quarterly. That's $15,000 of target commission on a $150,000 quarterly quota, a normal rate of 10%.
What a commission accelerator is
An accelerator is a higher commission rate on bookings above a threshold, usually 100% of quota. "1.5x above 100%" means every dollar booked above quota pays 1.5 times the normal rate. Below quota, nothing changes.
Commission = target × attainment up to 100%
+ target × (attainment − 100%) × 1.5 above 100%For Ana, the normal rate is 10 cents on the dollar, so above quota she earns 15 cents:
| Attainment | Bookings | Without an accelerator | With 1.5x above 100% |
|---|---|---|---|
| 80% | $120,000 | $12,000 | $12,000 |
| 100% | $150,000 | $15,000 | $15,000 |
| 120% | $180,000 | $18,000 | $19,500 |
| 150% | $225,000 | $22,500 | $26,250 |
| 200% | $300,000 | $30,000 | $37,500 |
At 120%: $15,000 + $15,000 × 20% × 1.5 = $19,500. The accelerator only touches the last $30,000 of bookings.
Marginal, not retroactive
A retroactive accelerator pays the higher rate on every dollar once the rep crosses the threshold. It sounds generous. It creates a cliff:
| Attainment | Marginal 1.5x | Retroactive 1.5x |
|---|---|---|
| 99% | $14,850 | $14,850 |
| 101% | $15,225 | $22,725 |
Under the retroactive version, a $3,000 deal that takes Ana from 99% to 101% is worth $7,875 to her. Expect deals to be pushed into the quarter at any discount, held back when the threshold is out of reach, and argued over when a deal is reclassified. A marginal accelerator has no cliff: each extra dollar pays a little more than the one before, and there's nothing to game.
Unless your plan says otherwise in writing, people will assume whichever version suits them. Write "the higher rate applies only to bookings above 100% of quota" into the plan. CompSlate always pays accelerators marginally, so the payout curve never jumps.
Tiers: more upside for the best quarters
A second tier raises the rate again further up. A common shape: 1.5x from 100% to 150%, and 2x above 150%.
| Attainment | One tier: 1.5x above 100% | Two tiers: 1.5x, then 2x above 150% |
|---|---|---|
| 120% | $19,500 | $19,500 |
| 150% | $26,250 | $26,250 |
| 200% | $37,500 | $41,250 |
At 200% with two tiers: $15,000 + $15,000 × 50% × 1.5 + $15,000 × 50% × 2 = $41,250. Each band pays only its own rate on the attainment inside it.
Two tiers are plenty. Each extra tier is another number a rep has to model to know what a deal is worth, and a plan they can't work out in their head stops changing behavior.
Add an accelerator to the AE plan from January 1: 1.5x above 100%,
2x above 150%.Caps: usually no, sometimes a high one
A cap limits commission to a multiple of target. With a cap at 250% of target, Ana can earn at most $37,500 of commission in a quarter. On the two-tier plan she reaches it at 187.5% attainment ($281,250 booked); nothing above that pays.
For AEs, the usual advice is to leave commission uncapped. A cap tells your best rep to stop selling once they hit it, or to slip the next deal into next quarter, which is the opposite of what you want from the person closing the most.
What founders actually worry about is the windfall deal: one customer five times bigger than anything you've sold, closed mostly by the founder's relationship. A high cap (250% to 300% of target) protects you there without touching normal good quarters. So does deciding, in writing and before it happens, how unusually large deals are credited.
Decelerators: lower pay below a threshold
A decelerator pays less than the normal rate below a threshold, so a very weak quarter earns less than a straight line would. Because each band pays its own rate, the band between the threshold and quota has to pay more to bring pay back to target at 100%:
| Attainment | Straight line | 0.5x below 50%, 1.5x from 50% to 100% |
|---|---|---|
| 40% | $6,000 | $3,000 |
| 80% | $12,000 | $10,500 |
| 100% | $15,000 | $15,000 |
At 80%: $15,000 × (50% × 0.5 + 30% × 1.5) = $10,500. Without the 1.5x band, Ana would earn only $11,250 at exactly 100% of quota.
Most startups shouldn't use one for their first AEs. A decelerator makes sense when quotas are reliable and pipeline is handed to reps. While both are still guesses, it mostly punishes your own planning errors. If a rep keeps landing under 50%, that's a conversation, not a pay curve.
Change the AE plan's accelerator: 0.5x below 50% of quota, 1.5x
from 50% to 100%, 1.5x above 100%. Show me what it does to each
rep's pay before you save it.What an accelerator costs
The cost of an accelerator is the extra pay above a straight line, and it lands on your top performers. Take four AEs on Ana's plan in one quarter:
| Rep | Attainment | Bookings | Straight line | With 1.5x above 100% |
|---|---|---|---|---|
| Ana | 160% | $240,000 | $24,000 | $28,500 |
| Ben | 110% | $165,000 | $16,500 | $17,250 |
| Chloe | 90% | $135,000 | $13,500 | $13,500 |
| Dev | 60% | $90,000 | $9,000 | $9,000 |
| Team | 105% | $630,000 | $63,000 | $68,250 |
The accelerator costs $5,250 this quarter, 8.3% more commission. Commission as a share of bookings goes from 10% to 10.8%. $4,500 of the $5,250 goes to Ana.
The marginal dollar is still cheap. Ana's cost of sale at target is 25% ($150,000 OTE ÷ $600,000 quota), because her base is part of it. Above quota her base is already paid, so each extra dollar costs only the accelerated rate: 15%. Even at 2.5x (25%), a dollar above quota costs no more than an average dollar at target. That's a ceiling, not a target: also check your gross margin, and what a new customer costs you to serve.
Price it on your real team before you commit. Use last year's attainment by rep, not the team average, because accelerators are paid per rep and per period. A team averaging 100% can still pay a lot of accelerator if one rep is at 160% and another at 40%.
What would a 1.5x accelerator above 100% cost us this year?
Compare it with 1.5x above 100% and 2x above 150%.The period matters as much as the rate
Accelerators are measured per pay period. On quarterly periods, a strong quarter pays accelerated commission even if the rep's year ends exactly on quota. In the seasonality example from the quota guide, Ana hits 100% for the year and earns $4,500 more than her $60,000 target, all from a 160% fourth quarter.
That isn't wrong, but decide it on purpose. If your bookings are lumpy and that bothers you, measure on half-years so strong and weak quarters partly cancel out. If you want reps to feel the reward quickly, stay quarterly and accept the cost.
Changing an accelerator mid-quarter. Start the change on the first day of a period. In CompSlate, an accelerator change applies to the whole period it falls in (rates use the terms in effect on the period's last day), and paid periods never change.
Accelerator designs to start from
| Role | Accelerator | Why |
|---|---|---|
| First AE | 1.5x above 100%, uncapped | Simple enough to work out in your head. The default in the first AE template. |
| Experienced AE, upside-driven | 1.5x above 100%, 2x above 150% | Rewards the rare big quarter without paying much on a normal one. |
| Account manager on expansion | 1.25x above 100% | Much of an AM's book renews without them, so a gentler slope. |
| SDR paid on meetings | None. Pay per meeting above target, capped at 150% | Meetings are cheap to inflate. A cap and a quality bonus keep them real. |
| Commission-only closer | None | A flat rate on every deal is the whole point. |
Accelerator mistakes to avoid
- Not saying "marginal" in writing. The retroactive reading costs more and invites deal timing games.
- Too many tiers. If a rep can't say what their next deal pays, the accelerator isn't motivating anyone.
- A low cap on AEs. It caps effort, not just pay.
- Accelerating on a quota you don't trust. If quotas are guesses, a 2x tier pays out on the guess. Start at 1.5x and raise it once you have a year of data.
- Clawing back at the accelerated rate. When a deal churns, take back what it earned at the normal rate, or say clearly in the plan that you'll recompute the period. Silence here becomes an argument later.
- Pricing it on the average. Model each rep separately; the cost lives in the top performers.
See what an accelerator pays before you add it
You can model all of this in a spreadsheet. The hard part is keeping it right as reps join mid-quarter, quotas change and deals churn, and showing each rep their own math.
CompSlate does it by chat. Describe the accelerator in its built-in chat (or in Claude or ChatGPT with CompSlate connected), and it shows what the change does to every rep's pay before anything is saved. Ask what an accelerator would have cost last year, compare two designs, and each rep gets a live card with their attainment, payout curve and earnings. It's free for 30 days, then $49 a month for the whole team. Start with the quick start, or copy a full plan from the commission plan templates.
Frequently asked questions
What is a commission accelerator?
A higher commission rate on bookings above a threshold, usually 100% of quota. With a 1.5x accelerator above 100%, a rep whose normal rate is 10% earns 15% on every dollar booked above quota. Bookings below quota are paid at the normal rate.
How do you calculate commission with an accelerator?
Pay target commission times attainment up to 100%, then the higher rate only on the part above it. A rep with $15,000 of quarterly target commission at 120% of quota with a 1.5x accelerator earns $15,000 + ($15,000 × 20% × 1.5) = $19,500.
What is a typical sales commission accelerator?
For SaaS AEs, 1.5x above 100% of quota is the most common starting point, sometimes with a second tier of 2x above 150%. Account managers often get a gentler 1.25x. Commission-only and SDR plans usually have none.
Should accelerators be retroactive?
Usually not. A retroactive accelerator pays the higher rate on every dollar once a rep crosses quota, so one small deal at 99% can be worth thousands. That cliff invites deal timing games. Marginal accelerators pay the higher rate only above the threshold and have no cliff.
Should sales commissions be capped?
For AEs, usually not: a cap tells your best rep to stop selling or hold deals. If the worry is a single windfall deal, a high cap of 250% to 300% of target, or a written rule for unusually large deals, protects you without touching normal good quarters.
What is a decelerator in a commission plan?
A lower commission rate below a threshold, for example 0.5x below 50% of quota. To keep pay at target at 100% of quota, the band between the threshold and quota has to pay more than the normal rate, such as 1.5x from 50% to 100%.
How much does an accelerator cost?
The extra pay above a straight line, which lands on reps above quota. In a four-rep example at 160%, 110%, 90% and 60% of quota, a 1.5x accelerator added 8.3% to commission for the quarter, almost all of it for the top rep. Price it per rep and per period, not on the team average.