Does Rule of 40 apply to non-SaaS companies?

It was designed for SaaS. It sort-of applies to other recurring-revenue businesses, but for one-time-sale or services companies the math is misleading.

What's a great Rule of 40 score?

60+ is best-in-class. 40-60 is healthy. 20-40 is concerning but survivable. Below 20 signals either broken growth or unsustainable burn.

Should we optimize for Rule of 40?

No — optimize for durable growth and unit economics. Rule of 40 is a reporting benchmark, not a strategy. Companies that manage to the metric often make bad trade-offs (slashing growth investment to hit the number).

Rule of 40 for SaaS: Formula, Benchmarks, and How Investors

The Rule of 40 says a healthy SaaS company's growth rate plus profit margin should equal or exceed 40%.

Rule of 40: The SaaS Benchmark That Balances Growth and Profitability

The Rule of 40 is the SaaS industry's most-cited efficiency benchmark: a company's annual revenue growth rate plus its profit margin should sum to at least 40%. A company growing 60% while burning 20% of revenue clears the bar (60 − 20 = 40). So does a company growing 15% at 25% margin (15 + 25 = 40). It gives investors one number to compare hypergrowth burn machines against slower, profitable operators.

Which margin?

The standard is FCF margin (Free Cash Flow / Revenue) for public SaaS. Private companies often use EBITDA margin or operating margin as proxies. Whatever definition you pick, be consistent — swapping between metrics quarter-to-quarter defeats the point of the benchmark.

Which growth?

Year-over-year revenue growth is standard. Some analysts prefer ARR growth for SaaS. For public companies, use trailing-12-month revenue growth. Consistency again matters more than the specific choice.

The benchmark evolution

Rule of 40 was popularized around 2015 when public SaaS multiples were high and growth was rewarded above all. Post-2022, the bar has effectively risen to Rule of 50-60 for premium valuations, and the market punishes companies clearing 40 by burning aggressively far more than those clearing it by profitable growth.

When it misleads

Rule of 40 breaks for companies with heavy usage-based revenue (revenue lumpy), pre-Series B companies (growth rates are noisy and burn is high by design), and companies with one-time revenue events (M&A, large services deals) inflating growth.

How to use it internally

Board-level: track quarterly, report annually, use it to frame trade-off conversations (e.g., 'we can grow faster but drop below 40, or hold at 45 and grow slower'). Team-level: not useful — the metric is too aggregated to guide any individual team's work.

Frequently asked questions

Does Rule of 40 apply to non-SaaS companies?: It was designed for SaaS. It sort-of applies to other recurring-revenue businesses, but for one-time-sale or services companies the math is misleading.
What's a great Rule of 40 score?: 60+ is best-in-class. 40-60 is healthy. 20-40 is concerning but survivable. Below 20 signals either broken growth or unsustainable burn.
Should we optimize for Rule of 40?: No — optimize for durable growth and unit economics. Rule of 40 is a reporting benchmark, not a strategy. Companies that manage to the metric often make bad trade-offs (slashing growth investment to hit the number).