Two metrics that answer different profitability questions
Gross margin and contribution margin are not interchangeable. Gross margin is a product economics metric. Contribution margin is a go-to-market decision metric. Using one where the other is appropriate produces misleading conclusions.Gross margin = (Revenue - Cost of Goods Sold) / Revenue
Cost of goods sold in SaaS typically includes hosting infrastructure, third-party software costs built into the product, and the portion of customer success headcount directly tied to delivery. It does not include sales, marketing, or general overhead.
Contribution margin = (Revenue - Variable Costs Attributable to That Revenue Unit) / Revenue
Variable costs depend on what you are measuring. At the deal level, variable costs include the commission paid on that deal. At the channel level, they include paid acquisition spend and any variable headcount tied to that channel. At the segment level, they include the blended variable cost of generating and closing a customer in that segment.
When to use each metric
| Decision | Use Gross Margin | Use Contribution Margin |
|---|---|---|
| Evaluating product pricing | Yes | No |
| Benchmarking against SaaS peers | Yes | No |
| Deciding whether to invest in a channel | No | Yes |
| Comparing segment profitability | No | Yes |
| Modeling CAC payback period | No (use it as an input) | Yes (the denominator) |
| Reporting to investors on unit economics | Yes | Sometimes |
The SaaS-specific nuance
In SaaS, gross margin is often high relative to other industries because the marginal cost of serving an additional customer is low once infrastructure is built. This can make gross margin look like a strong signal of business health. But it tells you nothing about whether your sales and marketing motion is profitable at the segment level.
A SaaS company can run a gross margin of 75 percent and still have negative contribution margins on a mid-market segment if the cost to acquire and retain a mid-market customer exceeds what that segment generates in gross profit. The gross margin number is valid. The segment economics are broken. Only contribution margin surfaces that.
How this connects to go-to-market planning
When designing territories, setting segment-specific quotas, or evaluating channel mix, contribution margin gives you the signal gross margin cannot. Calculate contribution margin by segment or channel at least annually, and use it alongside gross margin and gross profit margin benchmarks to build a complete picture of where the company is and is not generating real economic value from its go-to-market motion.
Frequently Asked Questions
What is the difference between gross margin and contribution margin?
Gross margin subtracts cost of goods sold from revenue and tells you how efficiently the company produces its product or service. Contribution margin subtracts only the variable costs tied to a specific deal, customer segment, or channel and tells you how much that unit of revenue contributes to covering fixed costs and profit. In SaaS, gross margin is a company-level or product-level metric; contribution margin is a go-to-market decision metric.
Which metric should RevOps use for go-to-market decisions?
Contribution margin is more useful for go-to-market decisions because it can be calculated at the segment, channel, or deal level. If you want to know whether a specific market segment or sales motion is worth the variable investment, contribution margin answers that. Gross margin tells you whether the product itself is economically sound, which is a finance and product question more than a GTM question.
Can gross margin and contribution margin point in different directions?
Yes. A company can have strong gross margins on its core product while running negative contribution margins on a specific channel or segment, because the variable costs of that go-to-market motion (commissions, paid acquisition, onboarding) exceed what it generates. This is why growing companies sometimes have healthy gross margins and still burn cash: their segment-level contribution margins are negative even if the product economics are sound.
Put these metrics to work
ORM builds custom revenue forecast models that turn concepts like gross margin vs. contribution margin into prescriptive action for your team.
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