Cost Structure · Updated June 2026
OpEx Ratio Benchmarks
S&M, R&D, and G&A as % of revenue by industry and ARR band. The cost structure benchmarks that determine whether you're investing in the right line items for your stage.
S&M, R&D, G&A as % of revenue — median values
| Industry | ARR Band | S&M % | R&D % | G&A % | Total OpEx % | FCF Margin (implied) |
|---|---|---|---|---|---|---|
| Pure SaaS | $5M–$20M | 58% | 32% | 18% | 108% | −32% |
| Pure SaaS | $20M–$50M | 52% | 28% | 14% | 94% | −18% |
| Pure SaaS | $50M–$100M | 42% | 24% | 11% | 77% | −1% |
| Pure SaaS | $100M+ | 34% | 20% | 9% | 63% | +13% |
| Dev Tools / Infrastructure | $5M–$20M | 38% | 45% | 16% | 99% | −21% |
| Dev Tools / Infrastructure | $20M–$50M | 30% | 40% | 13% | 83% | −5% |
| Dev Tools / Infrastructure | $50M–$100M | 25% | 35% | 10% | 70% | +8% |
| Security / Compliance | $5M–$20M | 62% | 35% | 20% | 117% | −43% |
| Security / Compliance | $20M–$50M | 55% | 30% | 16% | 101% | −27% |
| Security / Compliance | $50M–$100M | 44% | 26% | 13% | 83% | −9% |
| Security / Compliance | $100M+ | 36% | 22% | 10% | 68% | +6% |
| MarTech / Sales Tech | $20M–$50M | 60% | 22% | 15% | 97% | −25% |
| MarTech / Sales Tech | $50M–$100M | 50% | 20% | 12% | 82% | −10% |
| MarTech / Sales Tech | $100M+ | 38% | 18% | 9% | 65% | +7% |
| Fintech / Financial Services | $50M–$100M | 46% | 28% | 14% | 88% | −20% |
| Fintech / Financial Services | $100M+ | 38% | 24% | 11% | 73% | −5% |
| Vertical SaaS | $20M–$50M | 44% | 26% | 15% | 85% | −17% |
| Vertical SaaS | $50M–$100M | 36% | 22% | 12% | 70% | −2% |
| HR / Workforce | $20M–$50M | 56% | 24% | 16% | 96% | −28% |
| HR / Workforce | $50M–$100M | 45% | 22% | 13% | 80% | −12% |
Sources: KeyBanc Capital Markets SaaS Survey 2023, Bessemer State of the Cloud 2024, public SaaS company 10-K/10-Q filings 2023–2025. FCF margin implied = Gross Margin % − Total OpEx % (simplified; excludes D&A, stock-based comp adjustments).
Reading OpEx ratios at different stages
Total OpEx above 100% of revenue is common and expected up to $30M ARR — you are investing ahead of revenue. The question is trajectory. Dev Tools companies front-load R&D; security and martech companies front-load S&M. G&A above 15% at any scale signals organizational overhead that should compress. Above $100M ARR, best-in-class companies achieve 60–70% total OpEx — meaning 6–13% FCF margin at 75%+ gross margins. That's the leverage model the public markets pay for.Related benchmarks