Rule of 40 Calculator
Calculate your SaaS Rule of 40 score, benchmark against 15 public companies, and see your implied valuation range.
Calculate your SaaS Rule of 40 score, benchmark against 15 public companies, and see your implied valuation range.
Calculate your SaaS Rule of 40 score, get your implied valuation range, and benchmark against 15+ public companies.
Last reviewed: April 2026
Brad Feld introduced the Rule of 40 in his February 2015 post on Feld Thoughts, "The Rule of 40% For a Healthy SaaS Company." Bessemer Venture Partners then popularized it through the annual State of the Cloud report, and SaaS Capital and KeyBanc Capital Markets adopted it in their private-SaaS survey work. The math is deliberately simple:
Standard Rule of 40
R40 = Growth Rate (%) + Profit Margin (%)
Threshold for "healthy SaaS" per Feld: ≥ 40.
BVP-Weighted (Rule of X variant)
R40w = (Growth × 1.33) + (Margin × 0.67)
Bessemer's growth-weighted form — growth compounds, margin contributes linearly.
GM-Adjusted
R40gm = (Growth × GM/80) + Margin
Penalizes growth bought with low gross margins (services-heavy revenue).
Worked example. A company growing 28% YoY with 12% FCF margin scores R40 = 40 — exactly at threshold. This is Cloudflare's 2024 profile. Snowflake (36% growth, 29% margin) scores 65. HubSpot (21% growth, 16% margin) scores 37 — just below threshold. The threshold is what matters, not the components: a 60/-20 company and a 20/20 company both clear the bar.
The investment-grade threshold is 40. The named tiers below come from grouping public-SaaS Rule of 40 scores in our 2024 benchmark set, plus Bessemer Cloud Index and SaaS Capital Index commentary:
Score
< 20
20–40
40–50
50–60
60+
Tier
Below average
Developing / Approaching
Healthy (investment-grade)
Excellent
Top quartile / Exceptional
Public comp (2024)
Amplitude (4)
HubSpot (37), Gitlab (32)
Cloudflare (40), Salesforce (43)
Datadog (51), Veeva (51)
Palantir (61), Snowflake (65)
All 15 public-SaaS comparisons in this calculator use 2024 fiscal-year reported growth and FCF/EBITDA margin — the same period Bessemer State of the Cloud 2024 and SaaS Capital reports cover.
Bessemer introduced the Rule of X in a December 2023 Atlas post arguing that the original Rule of 40 incorrectly weights growth and margin equally. Their thesis: growth has a compounding effect on enterprise value, while margin has a linear effect, so a dollar of growth should be valued ~2× to 3× more than a dollar of margin.
The general form is Rule of X = (Growth × Multiplier) + FCF Margin, with the multiplier ~2× for private SaaS and 2–3× for public. This calculator implements the BVP-Weighted variant with a 1.33× growth weight (and 0.67× margin), preserving the 40 threshold while tilting credit toward growth — useful for high-growth pre-IPO companies that look "weak" on standard R40 but strong under Rule of X.
When to use which. Use Standard R40 if your investors use Feld's original framework or if you're at scale ($50M+ ARR). Use BVP-Weighted if you're high-growth and pre-profitable and want a fair comparison to the Cloud Index. Use GM-Adjusted if a meaningful share of your revenue is low-margin services or implementation work.
Feld's original 2015 post specifies the rule applies once a company is at scale — he cited $50M revenue as a reasonable starting point. Below ~$10M ARR, growth dominates and negative margins of -40% to -80% are normal because every dollar of CAC is being deployed for compounding ARR rather than near-term profit.
Stage-by-stage framing this calculator uses: Below $1M ARR, R40 matters less — focus on PMF. From $1M–$10M, treat R40 as a leading indicator and aim for 40+ by Series B. From $10M–$50M, investors actively grade R40 every board meeting. Above $50M, falling below 40 attracts activist attention and margin compression in fundraising. Salesforce in 2015 (at $5.4B revenue) scored R40 = 23 — proof that R40 builds over time and isn\'t expected at every stage.
The Rule of 40 is the single strongest predictor of SaaS revenue multiples in public markets, per Bessemer State of the Cloud and SaaS Capital Index research. The relationship is non-linear — a step-change occurs at R40 = 40 where investor appetite shifts. The valuation bands implemented in this calculator:
Rule of 40 Band
R40 < 0
R40 = 0–20
R40 = 20–30
R40 = 30–40
R40 = 40–50
R40 = 50–60
R40 ≥ 60
Implied Multiple (× ARR)
Distressed
2–4×
3–5×
5–7×
7–10×
10–15×
12–25×
These bands are calibrated against the public Cloud Index and 2022–2024 private-round comp data. Inside the calculator, the Implied Valuation panel shows the ARR-multiplied range for your specific score band.
The Rule of 40 states that a SaaS company's revenue growth rate plus its profit margin should equal or exceed 40. The rule was coined by Brad Feld in his February 2015 Feld Thoughts post "The Rule of 40% For a Healthy SaaS Company" and popularized by Bessemer Venture Partners in the State of the Cloud report. Margin can be EBITDA, free cash flow, or operating margin — Feld himself recommends EBITDA as the baseline.
Rule of 40 = Revenue Growth Rate (%) + Profit Margin (%). Worked example: a company growing 28% YoY with 12% FCF margin scores R40 = 40 — exactly at threshold (this is Cloudflare's 2024 profile). A company growing 36% with 29% margin scores R40 = 65 (Snowflake's 2024 profile). A company growing 21% with 16% margin scores R40 = 37, just below threshold (HubSpot 2024).
A score of 40 or above is the investment-grade threshold cited by Series B+ investors. Scores 50+ are considered excellent (Datadog 51, Veeva 51 in 2024). Scores 60+ are exceptional and command premium multiples (Snowflake 65, Palantir 61 in 2024). Below 40, multiples typically compress to 3×–7× ARR; above 60, public SaaS has historically traded at 12×–25× ARR.
The Rule of X is Bessemer Venture Partners' growth-weighted alternative to the Rule of 40, introduced in their December 2023 Atlas post. The premise: revenue growth should be valued ~2× to 3× more than FCF margin because growth compounds while margin contributes linearly. Formula: Rule of X = (Growth Rate × Multiplier) + FCF Margin, where the multiplier is ~2× for private and 2–3× for public companies. This calculator implements a BVP-Weighted variant with a 1.33× growth weight and 0.67× margin weight.
The Rule of 40 is the single strongest predictor of SaaS revenue multiples in public markets, per Bessemer's State of the Cloud and SaaS Capital research. Companies above R40 = 40 typically trade at 7×–15× ARR; below 40, multiples compress to 3×–7×. At R40 ≥ 60, public SaaS has commanded 12×–25× ARR multiples. The relationship creates a step-change at R40 = 40 where investor appetite shifts.
Brad Feld's original 2015 post recommends EBITDA as the baseline and back-testing with other measures. Bessemer's State of the Cloud reporting uses FCF margin (which is what Snowflake and Datadog publicly report against). For private SaaS at $1M–$50M ARR, EBITDA margin is the most common input because it strips out stock-based compensation noise. Use whichever your investors use — and disclose which one you picked.
Brad Feld's original post specifies the Rule of 40 applies once a company is at scale — he cited at least $50M revenue. Below ~$10M ARR, growth dominates and negative margins of -40% to -80% are normal. The rule becomes a useful benchmark from Series B onward (~$10–25M ARR) and a hard investor expectation by Series C and beyond. This calculator surfaces a stage-aware advisor that adjusts framing by ARR tier.
The Rule of 50 is a higher-bar variant applied to top-quartile SaaS — used in some Bessemer Cloud Index commentary and KeyBanc Private SaaS Survey reporting. The math is identical (growth + margin) but the threshold rises to 50%. In our 2024 benchmark set, Datadog (51), Veeva (51), Palantir (61), and Snowflake (65) clear Rule of 50; HubSpot (37), MongoDB (35), and Gitlab (32) do not.