How Roofing, Solar, and HVAC Contractors Actually Calculate Sales Commission
A sourced review of commission structures in home services: 10/50/50 roofing splits, solar redlines, HVAC percentages, what ~1,900 contractor configurations contain, and what the turnover and software figures really say.
Sales compensation at a 5-to-40-person roofing, solar, or HVAC company looks nothing like sales compensation at a software company. There is no fixed contract value to divide. A trade contract's final profitability keeps moving between signature and final payment — material prices change, subcontractors add supplemental labor, insurance supplements land months later, and financing promotions come out of the job at the end.
That is what makes commission arithmetic in the trades genuinely hard, and it is why the same word means three different things across three trades.
What follows is a review of the published research on how these companies calculate commission, what goes wrong when they calculate it by hand, and what the software market actually costs. Every figure is attributed where it appears. Where a number comes from a software vendor's own marketing rather than from independent research, it says so — and several of the most-repeated numbers in this space are vendor marketing.
1. Three trades, three different definitions of "commission"
Roofing splits into gross-revenue models and net-profit models. Under a revenue percentage, the rep takes a flat share of contract value or collected revenue — typically 7% to 12%, with 10% as the common rule of thumb, according to Contractors Cloud, a roofing CRM vendor writing about its own market. The structure is simple, and the risk it carries is one-directional: if a rep discounts hard or under-scopes materials, their number is fixed while the company's margin absorbs the difference. That matters against thin margins — residential roofing gross margins typically run 25% to 40%, with net margins landing between 6% and 12% after overhead and taxes, per Roofr.
The profit-based answer to that risk is the 10/50/50 split. ProLine, a roofing software vendor, documents the mechanics: 10% of job revenue is reserved off the top for company overhead, direct job costs (supplier receipts and subcontractor labor) are subtracted from the remaining 90%, and what is left is split evenly between the company and the rep.
On a $20,000 contract carrying $10,000 in direct costs, that is $2,000 reserved, $18,000 less $10,000 leaving an $8,000 profit pool, and $4,000 to the rep — an effective 20% of gross contract value. If material overruns push direct costs to $12,000, the pool shrinks to $6,000 and the same sale pays $3,000. Nothing about the sale changed. The rep's number moved because the job's costs moved, weeks after signature.
Solar uses a redline instead. The installer sets a baseline execution cost per watt — typically $2.80 to $3.50 per watt, covering equipment, engineering, permitting, and installation overhead — and the rep sets the retail price. Everything above the redline is the commission pool, paid out entirely to the rep or divided on a preset ratio such as 70/30 or 50/50. Solar also separates prospecting from closing: setters take a flat sit fee (around $100 per completed appointment) plus a per-kilowatt backend, or 30% to 50% of the pool the closer generates, per Sequifi, a commission software vendor. The solar ranges in this research come from practitioner forum threads and vendor blogs rather than survey data — they describe what people report doing, not a measured distribution.
HVAC mostly stays on revenue percentage or base-plus-commission. Comfort advisors earn 5% to 15% of gross contract value on retail system replacements, with higher-efficiency equipment carrying higher percentages or flat incentives to drive upselling. Commercial and industrial work more often pairs a base salary with 3% to 5% of gross contract value or 15% to 25% of net profit on bid work, averaging $40,000 to $70,000 in annual commission above base, per ZipRecruiter.
Commission basis by trade
The same word resolves to three different arithmetic bases. Only one of the three pays on a number that is fixed at signature.
| Trade | Dominant model | Calculated on | Typical range |
|---|---|---|---|
| Roofing | Revenue percentage, or a 10/50/50 profit split | Gross contract value, or net margin after a 10% overhead reserve and direct costs | 7–12% of revenue, or 50% of the net profit pool |
| Solar | Redline margin spread | Dollars per watt above a baseline execution cost of $2.80–$3.50/W | $0.20–$0.80+/W above redline, on a $4,000–$4,500 average deal |
| HVAC | Revenue percentage, plus equipment-tier incentives | Invoiced sale value, weighted by equipment efficiency tier | 5–15% of contract value residential; 3–5% of gross or 15–25% of net profit commercial |
Roofing figures: Contractors Cloud and ProLine, both vendors, plus margin data from Roofr. Solar figures: practitioner forum threads and vendor blogs, reported practice rather than a measured distribution. HVAC figures: ZipRecruiter.
2. What ~1,900 contractor configurations actually contain
The most concrete distribution available comes from Contractors Cloud, which reports the payout logic configured across approximately 1,900 roofing contractors on its platform. Two things about this dataset are worth stating plainly before the numbers: it is a vendor system dataset covering that vendor's own roofing customers, not an independent survey, and it captures how rules were configured rather than what was ultimately calculated.
How ~1,900 roofing contractors configured payout logic
More than a quarter deduct overhead before the split — which means the rep's number is not settled when the contract is signed.
Source: Contractors Cloud — a vendor system dataset of ~1,900 roofing contractors configured on its own platform, not an independent survey. The five reported categories sum to 98% of configurations.
The 26% figure is the one that drives everything downstream. A quarter of these companies calculate commission on a number that is not knowable at signature, because it depends on receipts, change orders, and supplements that arrive afterward.
3. Where manual calculation actually breaks
The research reports that the majority of 5-to-40-person field contractors manage commissions in spreadsheets or by re-keying into a payroll platform. The failure mode is not arithmetic skill. It is that the inputs keep changing after the sale:
- Material price adjustments and scrap factors recorded on purchase orders after the fact
- Subcontractor change orders and supplemental labor charges
- Approved insurance supplements that raise total contract value months after the job is finished
- Merchant processing and customer financing fees — a 12-month zero-interest promotion can cost 5% to 15% of contract value, deducted from job profit at the end, per ProLine
Timing inside field-service software creates a second class of error. ServiceTitan's own documentation states that commission line items populate only when an invoice is set to Posted or Exported. If an office manager changes an invoice date to accommodate customer financing, standard reporting can drop that job from the period entirely, as Wink Toolbox — a vendor building reporting on top of that platform — describes. The sale happened; the commission simply is not in the report.
Under a profit split, the direction of the error is predictable. Estimated material costs used in place of actual supplier receipts, or an insurance supplement that never gets credited back, underpay the rep. Overruns discovered after the commission has already gone out are difficult to recover, so the company absorbs them.
Two commonly cited numbers here deserve a caveat. The estimate of 10 to 20 hours per pay cycle spent auditing job tickets, matching receipts, and re-keying data comes from STAKT — a commission software vendor, describing the problem its product addresses. And the frequently repeated 1% to 5% spreadsheet error rate is drawn from general corporate payroll literature, not from any audit of trade commission ledgers. As the research itself notes, no independent study has measured the actual financial error rate in job-costed commission spreadsheets.
4. Shadow accounting: when reps start keeping their own books
Shadow accounting — reps maintaining private parallel ledgers to check the company's math — is well documented in enterprise sales and appears just as often in the trades. The driver in contracting is specific: a rep who closes a $25,000 roofing or solar deal under a profit split rarely receives a line-item breakdown of the supplier invoices, dump fees, subcontractor payments, and financing fees charged against that deal. When the number comes in lower than expected, the absence of a breakdown is itself the evidence the rep reasons from.
The cost is measured in selling time. SPOTIO's 2026 State of Field Sales Report finds field reps spend only 44% of working hours in active selling, with administrative tasks and manual data entry consuming 18% to 25%. Against a baseline of 10 to 25 in-person appointments per week, the research estimates that 2 to 4 hours a week spent chasing receipts and auditing commission statements costs 2 to 5 customer visits — and that losing roughly four appointments a week reduces individual deal volume by 15% to 20% annually. The 2-to-4-hour input is an estimate, not a measurement; the 44% and the appointment baselines are survey data. SPOTIO sells field sales software, so the survey is vendor-published, though it is the most independent turnover and time-allocation source in this literature.
5. Turnover, and what replacing a rep costs
Field sales attrition runs well above the corporate benchmark. Against an often-cited 35% average annual turnover for B2B sales organizations, SPOTIO's 2026 survey finds 41% of field sales teams turn over more than 50% of their force annually, 34% report more than half turning over every 12 months, and only 16% hold turnover below 10%.
Turnover rates, and the cost of one departure
Two separate bodies of evidence, kept separate on purpose: a survey of turnover rates, and cost estimates that come from different sources and do not add up to the headline benchmark.
| Measure | Figure | Evidence |
|---|---|---|
| Teams above 50% annual turnover | 41% | SPOTIO 2026 field sales survey |
| Teams below 10% annual turnover | 16% | SPOTIO 2026 field sales survey |
| Fully loaded replacement cost, one B2B rep | $155,000 | DePaul University study, as reported by Eendigo |
| Recruiting and direct hiring | $10,000–$20,000 | Staffing-firm estimate |
| Ramp and unrecovered draw, 90–180 days | $15,000–$25,000 | Staffing-firm estimate; ramp length from SPOTIO |
| Lost pipeline, 3-month coverage gap | $100,000–$200,000 | Staffing-firm estimate |
The three cost ranges are separate estimates from a staffing firm, not a breakdown of the DePaul figure. They are shown together because they describe the same event, not because they sum to it.
The $155,000 figure is a DePaul University benchmark, reached here through a secondary source rather than the study itself. The component ranges come from a contractor staffing firm and describe the same event from a different angle.
Ramp time is the component contractors underestimate. SPOTIO reports that 40% of field sales teams need three months or more to bring a new rep to baseline productivity, during which the hire produces at 25% to 50% of quota while drawing compensation.
One number in this area circulates widely and should be handled carefully. The claim that transparent commission tracking reduces voluntary rep turnover by up to 40% comes from the marketing of commission software vendors — STAKT and Sequifi among them. The research that compiled it lists this as one of its three biggest evidence gaps: the figure originates in vendor case studies, not in independent or peer-reviewed measurement. It is a vendor claim about vendor software, and it is repeated here as such rather than as a statistic.
6. The software landscape, at the vendors' own published numbers
Contractors evaluating software for this problem are choosing between field service management platforms, dedicated incentive compensation management tools, general CRMs, and spreadsheets. The published figures below are what each vendor lists, or what third parties report where a vendor does not publish pricing.
Published pricing, and what each vendor's own documentation says about commission
Two of the five do not publish pricing at all; those rows carry third-party figures and are labelled as such.
| Platform | Pricing | Implementation | What its own documentation says about commission |
|---|---|---|---|
| ServiceTitan | Not published; third-party estimate $200–$500/user/mo (~$350 midpoint) | $10,000+, 2–6 months | Applies flat "Sold By" rates and performance bonuses; multi-technician splits apply to performance bonuses, not sales commission; no automated commission on progress or AIA billing |
| Jobber | $39–$200+/mo published tiers | Self-serve | Documents salesperson assignment and performance tracking; no commission calculation rules, splits, or profit-based logic |
| Housecall Pro | $59–$149+/mo published tiers | Self-serve | Reported as basic tracking only; the underlying research cites no vendor documentation for this platform's commission capability |
| QuotaPath | $35–$50/user/mo plus a required $525–$800/mo platform fee covering the first 5 seats | $5,000+, 2–4 weeks | Built for B2B sales tiers; integrates natively with B2B CRMs, not with field-service platforms |
| CaptivateIQ | Not published; reported $10,000–$30,000 minimum annual contract value, ~$55–$60/payee/mo | $5,000–$30,000+, 2–4 months | Spreadsheet-like modelling flexibility |
Pricing as published by each vendor — QuotaPath — or as reported by third parties where a vendor does not publish it: FieldServiceCompare, Vendr, Sacra, and Visdum, the last being a competing vendor in the same category. Capability statements come from each platform's own documentation: ServiceTitan, ServiceTitan progress billing, and Jobber.
The shape of the gap is visible in the table. The platforms that hold the job-cost data document tracking rather than calculation, and the platforms built to calculate were built for a different kind of sales team.
7. The integration tax
Splitting the difference — field-service software for the work, something else for the commission math — carries its own cost. Connector fees are the visible part. One documented example in this category is a flat $250 per month for a single non-native connector, which is $3,000 a year for one integration, reported in a software selection guide published by QuotaPath — itself a vendor in the category, writing about a competitor's fee.
The larger cost is that trade contracts revise constantly, and revisions do not map cleanly across a connector. Adding squares of decking to a roof or changing an HVAC line set produces line items that external commission tools were not built to interpret, and field mappings break whenever custom fields are added on the CRM side. Because external systems cannot read supplier invoices and subcontractor bills directly, office staff end up re-keying finalized job costs by hand — which is the work the software was bought to remove. At the far end, exporting commission totals into a payroll platform requires matching earnings codes manually, and mismatches produce incorrect withholdings and general-ledger errors.
8. What the evidence does not support
The research is explicit about the limits of its own case, and those limits are worth more than the headline numbers:
Automation cannot outrun bad inputs. If supervisors do not enter supplier receipts, if invoices are posted late, or if insurance supplements go unrecorded, a calculation engine produces confident, wrong totals faster than a spreadsheet does.
Clear math cannot fix an unfair plan. A contractor deducting 20% overhead against a 30% gross margin will lose reps no matter how legibly the deduction is displayed.
Commission structure is not sales training. Better compensation mechanics do not teach closing technique or generate qualified leads.
And three gaps in the evidence base itself:
- No independent audit of trade commission error rates. The 1% to 5% spreadsheet error range comes from general finance literature. Nobody has audited a sample of contractors' actual profit-split ledgers.
- No independent measurement of automation's effect on retention. The 40% retention improvement traces to vendor case studies from STAKT and Sequifi, not to controlled research.
- No granular distribution for HVAC. Roofing (10/50/50) and solar (redline) have documented frameworks. HVAC compensation stays aggregated under general salary-plus-commission ranges.
Where KickSplit fits, and where it does not
KickSplit publishes this blog, so it is worth being precise: none of the capabilities described in the research above are claims about KickSplit, and several of them describe things KickSplit does not do.
What it does do is narrower. Commission calculates on sales once they reach the commission side of the product, against the plan rules configured for each rep. Commission runs produce the period's numbers, and once a run locks its outputs are immutable. Statements and payroll exports come out of that locked run with compensation categories kept distinct rather than flattened into one figure — KickSplit prepares the export; your payroll provider pays.
What it does not do: there is no live per-deal payout figure on a rep's screen while a quote is being built, and no calculation that reprices itself as a discount is typed. Commission is calculated on sales, in a period, after the fact.