The sales commission calculator above models the four commission structures most sales teams actually run: flat percentage of revenue, tiered by quota attainment with an accelerator, base plus commission, and commission based on gross margin rather than raw revenue. Pick the structure that matches your comp plan and see exactly what a given deal size and quota attainment pays out.
Getting commission structure right matters more than most sales leaders admit β it's the single lever that most directly shapes rep behaviour, for better or worse. We help clients at Arb Digital design go-to-market motions where sales comp actually reinforces the outcomes the business needs, not just revenue for its own sake, and this calculator is built around the same logic.
What This Sales Commission Calculator Does
Enter the deal or period revenue a rep closed, their quota, and their commission rates, and the calculator computes attainment against quota, commission earned at the base rate, any accelerator bonus earned on revenue closed above quota, and total compensation combining base salary and commission. Switch the structure dropdown and the underlying math changes to match: flat structures apply one rate to all revenue with no tiering, tiered and base-plus-commission structures split revenue at the quota line and apply the accelerator rate only above it, and the margin-based structure calculates commission on gross margin dollars instead of top-line revenue β which changes what a rep is actually incentivized to protect.
How to Use It
- Pick your commission structure from the dropdown β flat, tiered, base + commission, or margin-based.
- Enter revenue closed and quota for the period you're calculating (monthly, quarterly, or annual β just be consistent).
- Set the base commission rate β the percentage paid on revenue up to quota (or on all revenue, in flat mode).
- Set the accelerator rate β the higher percentage paid on revenue closed above quota.
- Enter base salary if the role includes one β leave at 0 for pure-commission roles.
- Enter gross margin if you're using the margin-based structure, so commission reflects margin dollars, not revenue dollars.
The Formula: Tiers, Accelerators, and Attainment
Quota attainment is simply revenue closed divided by quota, as a percentage. In tiered mode, revenue up to the quota amount earns commission at the base rate, and any revenue above quota earns commission at the (higher) accelerator rate β so a rep who closes $150,000 against a $120,000 quota earns base-rate commission on the first $120,000 and accelerator-rate commission on the remaining $30,000. In margin-based mode, the same tiering applies, but it's calculated on gross margin dollars (revenue Γ margin percentage) rather than revenue dollars, so a rep discounting heavily to close a deal earns less commission on that deal even if the revenue number looks the same. The Society for Human Resource Management and most compensation design literature describe this tiered-with-accelerator structure as the industry standard because it rewards attainment progressively rather than linearly β for a broader look at incentive compensation structures, see Investopedia's explainer on sales commission structures.
Why Accelerators Drive Behaviour More Than the Base Rate
A flat percentage of revenue treats every dollar the same, which means a rep has no particular reason to push a borderline deal to close in December instead of letting it slip to January β the commission check looks identical either way. An accelerator changes that completely. Once a rep can see they're going to clear quota, revenue above that line suddenly pays out at a meaningfully higher rate, which is exactly the incentive that gets deals pulled forward, upsells attempted before period-end, and forecast accuracy improved because reps stop sandbagging deals into the next period. This is why almost every well-run sales organization runs some version of tiered-plus-accelerator rather than flat commission β flat plans are simpler to administer, but they leave real revenue on the table in the final weeks of every period.
Margin-Based Commission Stops the Wrong Kind of Deal
Revenue-based commission has a well-known failure mode: a rep facing a flat percentage of revenue has every incentive to discount aggressively to close a deal faster, because the commission math doesn't care whether the deal was profitable β only that it closed. Margin-based commission fixes this directly by paying commission on gross margin dollars instead of revenue dollars, so a deal closed at full price pays meaningfully more commission than the same revenue closed at a steep discount. This is particularly important in businesses where reps have real discounting authority β SaaS, wholesale, and services businesses especially β because without a margin-based structure, the sales team and the finance team end up pulling in opposite directions on price.
The OTE Split: Why 50/50 Base and Variable Is the Norm
On-target earnings (OTE) is the total a rep should expect to earn at 100% quota attainment β base salary plus commission at plan. Most B2B sales organizations split this roughly 50/50 between base and variable compensation, though the exact ratio shifts with deal complexity and sales cycle length: highly transactional, short-cycle sales roles often skew more toward commission (a 40/60 or even 30/70 base-to-variable split), while long, complex enterprise sales cycles typically carry a higher base (closer to 60/40) because a single rep's results are lumpier and slower to materialize. Whatever split you land on, the total compensation figure this calculator produces β base salary plus commission earned β is the number that matters when comparing your plan to what competitors are offering candidates in the same role.
A Worked Example: Tiered Commission With an Accelerator
Take a rep who closed $150,000 against a $120,000 quota, on a plan paying 5% base commission and an 8% accelerator above quota. Attainment comes out to 125% of quota. The first $120,000 of revenue earns commission at the base 5% rate β $6,000. The remaining $30,000, closed above quota, earns commission at the 8% accelerator rate β $2,400. Total commission for the period is $8,400, and if that rep carries a $50,000 base salary (prorated to the relevant period), total compensation for the period combines both figures. Compare that to what a flat 5% commission plan would have paid on the same $150,000 in revenue: exactly $7,500, with no reward at all for exceeding quota by 25%. The $900 difference in this example is modest, but it compounds meaningfully across a full sales team and a full year β and more importantly, it's the incentive that made the rep push to close that last $30,000 in this period instead of letting it slip into the next one.
Designing a Plan That Rewards the Right Behaviour
Commission structure is one of the few levers in a business that changes behaviour almost immediately once reps understand it β which means the structure itself deserves as much design attention as pricing or product strategy. A plan with no accelerator invites reps to pace themselves evenly through a period with no urgency near the close date. A plan with no margin component invites discounting to close deals faster, since revenue-only commission doesn't distinguish a full-price deal from a heavily discounted one. A plan with quota set unrealistically high, based on wishful revenue targets rather than historical attainment data, tends to produce a demoralized team that stops trying to hit a number they've decided is unreachable. Before finalizing a comp plan, model a handful of realistic scenarios β a rep at 80% attainment, 100%, and 130% β through this calculator and check that the payout at each level feels fair to both the rep and the business, not just at the average case you originally had in mind.
Arb Digital runs the lead generation, paid campaigns, and website conversion work that keeps a commission plan like this one funded with real opportunity. Let's talk about your growth plan.
Our Services All Free ToolsCommon Mistakes to Avoid
- Running flat commission with no accelerator and wondering why reps don't push to close deals early in a period.
- Paying revenue-based commission with no margin guardrail, which quietly rewards reps for discounting away company profit.
- Setting quota without checking it against historical attainment data β an unrealistic quota demoralizes a team faster than a generous one overpays.
- Mixing time periods, comparing a monthly quota against annual revenue closed, which skews attainment and commission entirely.
- Ignoring the base salary in total comp comparisons β a lower commission rate with a higher base can still be the more competitive offer.
- Changing the plan mid-period. Reps who closed deals expecting one structure and get paid under a changed one lose trust in the whole comp system.
Related Free Tools From Arb Digital
Check deal profitability with the gross margin calculator and the markup calculator before setting margin-based commission rates, price consistently with the product pricing calculator or the wholesale price calculator, and see how discounting affects the deals your reps are closing with the discount percentage calculator. Explore everything at our free online tools hub.
Frequently Asked Questions
Both apply the base rate up to quota and the accelerator rate above it. "Base + commission" simply emphasizes that base salary is a core, non-negotiable part of total compensation, while "tiered" can apply to pure-commission roles too β the underlying tier math is the same in this calculator.
Because it's calculated on gross margin dollars (revenue minus cost) rather than total revenue. A heavily discounted deal generates less margin, so it pays less commission under a margin-based plan even if the revenue total looks similar to a full-price deal.
It's a higher commission percentage that applies only to revenue closed above quota. It rewards reps disproportionately for exceeding their target rather than paying the same rate on every dollar, which is what drives urgency to close deals before a period ends.
On-target earnings β the total compensation, base salary plus commission, a rep should expect to earn at exactly 100% quota attainment. It's the number candidates and reps compare across job offers, not just the base salary or commission rate alone.
It's the common default, but shorter, more transactional sales cycles often skew toward more variable pay, while long, complex enterprise sales cycles typically carry a higher base since individual results are slower and lumpier to land.
Yes β run it once per rep using their individual revenue and quota, or use team totals for a blended view of aggregate commission payout across a period, keeping the commission rates consistent with your actual plan document.
