Calculate your SaaS Rule of 40 score using ARR growth rate and your choice of EBITDA, free cash flow, or net income margin. Get your valuation multiple projection, stage-based benchmark, and improvement scenarios — all in one place.
✓Verified: Brad Feld’s original Rule of 40 framework & SaaS Capital 2026 benchmark data — April 2026
💰 Your SaaS Metrics
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Annual Recurring Revenue this period
Enter a valid current ARR.
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ARR from same period last year
Enter a valid prior ARR (must be > 0).
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Total revenue for same period as ARR
Enter a valid revenue amount.
EBITDA is standard for most private SaaS
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Can be negative for high-growth companies
Enter a valid profit figure (can be negative).
Used for stage-appropriate benchmark comparison
Your Rule of 40 Score
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020406080+
Improvement Scenarios
⚠️ Disclaimer: Valuation multiples are indicative based on market research and vary significantly by investor, market conditions, growth quality, and deal-specific factors. Rule of 40 is one input into valuation, not the only factor. Consult a financial advisor or investment banker for specific valuation analysis.
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Sources & Methodology
✓Rule of 40 formula verified against Brad Feld’s original 2015 framework. Benchmark data from SaaS Capital 2026 annual report and Software Equity Group SaaS M&A analysis. Valuation multiple data from Wall Street Prep and public SaaS company filings.
Annual benchmark data covering Rule of 40 scores, valuation multiples by score tier, and ARR growth expectations by company stage. Primary source for benchmark comparisons in this calculator.
Detailed Rule of 40 formula methodology including ARR growth rate calculation, EBITDA vs FCF margin comparison, and stage-appropriate application framework used in this tool.
Research on how Rule of 40 score correlates with SaaS valuation multiples in M&A transactions. Companies scoring 40+ typically command 10.7x ARR multiples. Source for valuation projection ranges.
Methodology:ARR Growth Rate (%) = (Current ARR - Prior ARR) / Prior ARR x 100Profitability Margin (%) = EBITDA (or FCF or Net Income) / Revenue x 100Rule of 40 = ARR Growth Rate (%) + Profitability Margin (%)Weighted Rule of 40 = (Growth Rate x 1.33) + (Margin x 0.67)
Valuation multiple projection: Below 40 = 6–8x ARR. 40–59 = 9–12x ARR. 60+ = 13–20x ARR. Ranges based on SaaS Capital and Software Equity Group research.
Rule of 40 Calculator — Complete SaaS Health Guide
The Rule of 40 is the most widely cited single-metric benchmark in SaaS investing. In an industry where founders can grow fast while burning cash or be profitable but barely growing, the Rule of 40 provides an elegant framework that balances both dimensions. But most calculators stop at the basic formula. This guide covers what competitors consistently miss: the three profitability variants, stage-based interpretation, valuation multiple impact, and the Weighted Rule of 40 that sophisticated investors actually use.
Failing example:
15% ARR growth + (-10%) EBITDA margin = 5 — Well below the 40 benchmark
EBITDA vs FCF vs Net Income — Which Margin to Use
The profitability metric you use changes your Rule of 40 score significantly. This is the most common point of confusion and the gap most competitor calculators fail to address.
EBITDA Margin (most common for private SaaS): EBITDA = Earnings Before Interest, Taxes, Depreciation, and Amortization. It removes non-cash charges and financing costs, showing operational profitability. Typical SaaS EBITDA margins range from -40% (high-growth startups) to +35% (mature efficient businesses). This is the standard for private company comparison and most fundraising conversations.
Free Cash Flow Margin (preferred at scale and for public companies): FCF = Operating Cash Flow minus Capital Expenditures. It reflects actual cash the business generates and is harder to manipulate than EBITDA. The SaaS Metrics Standards Board recommends FCF as the most accurate profitability measure. For asset-light SaaS businesses, FCF margin and EBITDA margin tend to converge over time.
Net Income Margin (least common for Rule of 40): Net income includes interest expense, taxes, depreciation, and amortization, making it highly sensitive to capital structure decisions. A company with heavy debt will show lower net income margin than an identical equity-funded business. Net income margin is rarely used for Rule of 40 in SaaS because it creates artificial variation unrelated to operational performance.
Stage-Based Rule of 40 Benchmarks
The Rule of 40 is not a one-size-fits-all benchmark. Early-stage companies naturally have higher growth rates and more negative margins than mature companies. The target Rule of 40 score evolves with company stage.
Company Stage
ARR Range
Expected Growth
Expected EBITDA
Rule of 40 Target
Early Stage
<$5M ARR
100–300%+
-30% to -60%
40+ (or trending up)
Growth Stage
$5M–$20M ARR
60–120%
-20% to +10%
40–60
Scale Stage
$20M–$100M ARR
40–80%
-10% to +20%
45–65
Mature / Pre-IPO
>$100M ARR
25–50%
+10% to +35%
50+ (both >0)
How Rule of 40 Affects Valuation Multiples
The financial impact of the Rule of 40 on valuation is substantial and consistently documented in SaaS M&A research. Companies achieving or exceeding 40 typically command ARR multiples of 9 to 12 times. Those scoring above 60 receive 13 to 20 times ARR in strong markets. Companies below 40 typically receive 6 to 8 times ARR. At $10M ARR, the difference between a Rule of 40 score of 25 and 55 can represent $50M to $120M in valuation — the same business, fundamentally different fundraising outcome.
Research from Software Equity Group across 2024 to 2026 SaaS M&A transactions shows companies scoring above 40 on the Weighted Rule of 40 (which gives 1.33x weight to growth) consistently trade at the upper end of valuation ranges for their size. Investors use the Rule of 40 as an initial screen to eliminate companies before conducting deeper due diligence — failing the Rule of 40 means being excluded from many institutional growth equity conversations entirely.
The Weighted Rule of 40 — What Most Calculators Miss
The standard Rule of 40 treats growth and profitability equally. But SaaS investor data consistently shows that markets value growth more than profitability — a company growing 80% with -20% margins typically commands a higher multiple than a company growing 20% with 40% margins, even though both score exactly 60 on the standard Rule of 40. The Weighted Rule of 40 addresses this by applying a 1.33x multiplier to growth and 0.67x to profitability: Weighted R40 = (Growth Rate x 1.33) + (Margin x 0.67). This creates a more investor-relevant score that better predicts valuation outcomes at scale.
💡 Rule of 40 + NRR = The Investor Combination: Sophisticated investors use Rule of 40 alongside Net Revenue Retention (NRR) to assess SaaS quality. A company with Rule of 40 score of 45 and NRR of 120% is far more valuable than one with a Rule of 40 of 55 and NRR of 95%. NRR above 100% means existing customers generate more revenue over time, which reduces reliance on new customer acquisition for growth. NRR and Rule of 40 together provide a more complete picture of SaaS business health than either metric alone.
How to Improve Your Rule of 40 Score
Two levers drive Rule of 40: growth rate and profitability margin. The highest-leverage actions to improve both simultaneously:
Churn reduction is the most powerful single action. One percentage point reduction in monthly churn improves the growth rate (better NRR) and reduces CAC spend needed to offset losses. Moving from 5% to 3% monthly churn increases average customer lifetime from 20 to 33 months and typically adds 2 to 4 points to the Rule of 40 score directly. Pricing increases for existing customers increase revenue without additional cost, directly improving both growth rate and profitability margin simultaneously. Well-executed annual price increases of 5 to 10% in established products typically add 3 to 6 points to Rule of 40. Infrastructure cost optimization (FinOps) directly improves gross margin and EBITDA margin without touching revenue. Many SaaS companies at growth stage have 5 to 15 percentage points of unnecessary cloud spend that flows directly to EBITDA when eliminated.
Frequently Asked Questions
The Rule of 40 is a benchmark stating that a healthy SaaS company's revenue growth rate plus profit margin should equal or exceed 40%. Popularized by venture capitalist Brad Feld in 2015, it helps investors and operators quickly assess whether a company is balancing growth and profitability. A company growing 60% YoY can sustain negative 20% margins and still pass. A company growing 10% should target 30% profit margin. The rule elegantly captures the trade-off that is inherent in SaaS: investing in growth reduces short-term profitability.
Rule of 40 = ARR Growth Rate (%) + Profitability Margin (%). ARR Growth Rate = (Current ARR minus Prior ARR) / Prior ARR x 100. Profitability margin is most commonly EBITDA margin = EBITDA / Revenue x 100. Example: 30% ARR growth plus 20% EBITDA margin equals 50% Rule of 40 score, which passes the 40% benchmark. The calculator above computes this automatically from your ARR figures and profit amounts.
EBITDA margin is the most common choice for private SaaS companies because it removes non-cash items and is comparable across companies regardless of capital structure. Free Cash Flow (FCF) margin is preferred by public companies and investors at scale because it reflects actual cash generation. Net income margin is rarely used because it includes interest and taxes that vary by financing structure. Use EBITDA for standard Rule of 40 reporting to investors, FCF if your company is at $50M+ ARR or preparing for an IPO.
A Rule of 40 score of 40 or higher is considered healthy. Scores of 50 to 60 indicate strong performance. Scores above 60 are exceptional. Companies consistently scoring above 40 typically command 10.7x ARR multiples versus 6 to 8x for those below. The score should be interpreted in context of stage: early-stage companies under $5M ARR are expected to score lower than $50M+ businesses. A score trending upward over consecutive quarters is often more important than any single period score.
The Rule of 40 is most useful once a SaaS company reaches $5M to $10M in ARR with validated product-market fit. Below $5M ARR, growth rates are naturally volatile and the metric is unstable. Early-stage startups should focus on customer retention, NRR, and product-market fit first. As companies approach $5M ARR, investors increasingly expect Rule of 40 awareness and scores trending toward 40. At $20M+ ARR, passing the Rule of 40 consistently is a standard expectation for growth equity investors.
The Weighted Rule of 40 gives higher weighting to growth because investors value growth more than profitability in SaaS. Formula: Weighted Rule of 40 = (Growth Rate x 1.33) + (Profitability Margin x 0.67). This reflects that a company growing 80% with -20% margins typically commands higher multiples than one growing 20% with 40% margins, even though both score 60 on the standard Rule of 40. The Weighted Rule of 40 is used in some PE and growth equity frameworks to better reflect market-observed valuation patterns.
Companies consistently achieving or exceeding 40 on the Rule of 40 command significantly higher ARR multiples. Research shows companies scoring above 40 typically receive 9 to 12 times ARR versus 6 to 8 times for those below. Companies scoring above 60 may receive 13 to 20 times ARR in strong markets. At $10M ARR, the difference between a score of 25 and 55 can represent $50M or more in valuation difference. Many growth equity investors use Rule of 40 as an initial filter, excluding companies below 30 to 35 from detailed consideration.
Yes. A company growing 80% ARR year-over-year can have negative 40% EBITDA margins and still pass the Rule of 40 with a score of 40. This is the core insight: early-stage SaaS companies burning cash aggressively but growing very fast can still be considered financially healthy if growth offsets the burn. As growth slows naturally with scale, the expectation is that profit margins improve to compensate and maintain the score above 40.
ARR growth rate benchmarks by stage in 2026: Under $1M ARR, 150 to 300%+ is expected. $1M to $5M ARR, 100 to 150% is excellent. $5M to $20M ARR, 80 to 120% is strong. $20M to $50M ARR, 50 to 80% is good. $50M to $100M ARR, 40 to 60% is healthy. Above $100M ARR, 30 to 50% is strong performance. Growth naturally slows at scale because the denominator (current ARR) grows larger, making it mathematically harder to sustain high percentage growth rates.
The highest-leverage improvements: First, reduce churn. One percentage point reduction in monthly churn improves both growth rate (through better NRR) and reduces CAC spend, typically adding 2 to 4 points to Rule of 40. Second, implement pricing increases for existing customers. Annual increases of 5 to 10% in established products add 3 to 6 points to Rule of 40 by improving both growth rate and margins. Third, optimize infrastructure costs through FinOps practices. Many SaaS companies at growth stage have 5 to 15 percentage points of unnecessary cloud spend that flows directly to EBITDA when eliminated.