The Rule of 40 is the most widely cited benchmark for SaaS company health at scale.
It states that a sustainable SaaS business should have its growth rate + profit margin ≥ 40%.
Rule of 40 Score = Revenue Growth Rate (%) + Net Profit Margin (%)
A company growing at 60% year-over-year with a −15% margin scores +45 — healthy.
A company growing at 10% with 5% margin scores +15 — concerning. A company growing
at 20% with 25% margin scores +45 — excellent.
Why the Rule of 40 matters for investors
Investors use the Rule of 40 to compare companies at different growth stages. A high-growth
company burning cash is acceptable if growth is fast enough to offset the burn.
A slower-growth company is only valuable if it generates meaningful profit.
The Rule of 40 captures the trade-off between both.
Public SaaS companies trading at premium multiples almost universally pass the Rule of 40.
During the 2021 SaaS bull market, top-quartile companies scored 60+.
Rule of 40 benchmarks
Score
Interpretation
< 20
Struggling — needs significant improvement
20–39
Below benchmark — acceptable early stage
40–59
Passes — healthy SaaS business
60+
Exceptional — top-quartile growth + efficiency
When does the Rule of 40 apply?
Most investors apply the Rule of 40 to companies above $5–10M ARR. Below that threshold,
growth rate takes precedence — a pre-revenue startup burning cash at 200% growth isn't
expected to be profitable. At $50M+ ARR, the Rule of 40 becomes a hard benchmark for
premium valuation multiples.
Frequently asked questions
Which profit margin metric should I use?
Free cash flow margin is the most common choice, as it accounts for capex and working
capital. Some investors use EBITDA margin. Net income margin is least common because it
includes non-cash charges (stock compensation, depreciation) that distort the picture.
Can I game the Rule of 40 by cutting investment?
Yes, but short-term. Cutting R&D or sales to improve margins will show a higher score
today but slower future growth — which investors recognize and discount.
Rule of 40 Benchmarks by ARR Stage — What Investors Expect
Rule of 40 scores expected at $1M, $5M, $10M, and $50M ARR — and how to improve your score at each stage.
The Rule of 40 is not uniformly applied at every ARR stage. Investors have different
expectations depending on where you are in your growth journey.
Rule of 40 expectations by ARR
ARR stage
Growth rate expectation
Margin expectation
Rule of 40
$0–1M
100–300% YoY
−50% to −100%
N/A (too early)
$1–5M
80–150% YoY
−30% to −60%
20–80+ (growth trumps)
$5–10M
50–100% YoY
−20% to −40%
30+ expected
$10–30M
40–60% YoY
−15% to −30%
40+ expected
$30–100M
25–40% YoY
−10% to 0%
40–50
$100M+ / pre-IPO
20–35% YoY
0–20%
50–70+ for premium multiple
Why growth matters more early on
Below $10M ARR, investors almost universally prioritize growth rate over profitability.
A company growing at 200% with a −60% margin scores +140 on the Rule of 40 — but the
score is almost irrelevant. What matters is the growth velocity.
Above $10M ARR, the margin component starts to matter. VCs and growth equity firms
start asking: is this business capital-efficient? Can it be profitable at scale?
The Rule of 40 and public market valuations
In the 2021 SaaS bull market, companies trading above 20× ARR almost universally had
Rule of 40 scores above 60. Post-correction (2022–2024), the Rule of 40 remains
important but the threshold for premium multiples has shifted:
- Score 40–60: 8–14× ARR multiple (healthy)
- Score 60+: 14–20× ARR multiple (top-quartile)
- Score < 40: 4–8× ARR (requires clear path to improvement)
Rule of 40 SaaS Benchmarks: What Score Should You Target?
Rule of 40 benchmarks for early-stage, growth, and public SaaS companies — and how your score correlates with valuation multiples.
The Rule of 40 is a framework used by SaaS investors to assess whether a company's
growth rate and profitability are in healthy balance. Here is what different scores
mean in practice.
Where profit margin is typically EBITDA margin or FCF margin.
A score of 40+ is considered "passing." A score above 60 is exceptional.
Benchmarks by company stage
Stage
Median Rule of 40
Top quartile
Pre-Series A
30–50
60+
Series A–B
40–60
80+
Series C+
35–55
70+
Public SaaS
30–50
60+
Rule of 40 vs. valuation multiples (public SaaS)
Companies scoring above 40 trade at ~7–12× ARR.
Companies scoring above 60 trade at ~10–18× ARR.
Companies below 40 typically trade at ~3–6× ARR.
Note: multiples compress during market downturns — these are approximate.
The tradeoff between growth and profitability
Early-stage companies typically achieve Rule of 40 via growth (e.g. 100% growth
at −60% margins). Mature SaaS companies achieve it via profitability (e.g. 20%
growth at 25% FCF margin). Both paths are valid — what matters is the sum.