The Rule of 40 is a critical metric for investors—particularly in the SaaS and software sectors—because it benchmarks whether a company is balancing rapid growth with profitability, where a combined rate of ≥ 40 % ≥ 4 0 % signifies healthy, sustainable, and high-value performance. It provides a quick snapshot of a firm's operational efficiency, often directly correlating to higher revenue multiples and valuation.
The Rule of 40 is a metric for evaluating the health of a SaaS company, calculated as the sum of revenue growth rate and EBITDA margin. Generally, companies aim for a result that is above 40%. Total addressable market. TAM represents the maximum revenue opportunity available for a product or service in a market.
The rule stipulates that the sum of a company's revenue growth rate and its EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) margin should be equal to or exceed 40%. This equilibrium is seen as a sign of a healthy and sustainable business.
But in more uncertain times, the rule of 40 – which holds that a company's revenue growth plus profit margin should be 40 per cent or more – becomes more critical. It has been a key metric, particularly when assessing the investability of software-as-a-service companies. If it's above 40, it's healthy.
For example, if a company's score is well above 40%, it may justify further aggressive investment in growth. If the score is below 40%, the focus may need to shift toward improving operational efficiency, optimizing pricing, or reducing customer churn to improve profitability.
On the other hand, a high Rule of 40 can be misleading when the metrics are out of balance. For example, a company growing 80% with -30% EBITDA margin. The Rule of 40 is equal to 50, but a heavy cash burn can be unsustainable.
A 2019 study by Harvard Business Review found either Vanguard, BlackRock or State Street is the largest listed owner of 88% of S&P 500 companies. There is a perception that a few select companies own a vast majority of the stock market.
NVIDIA Corporation (NVDA) Rule of 40 (EBIT margin) annual & quarterly (2006–2025) Rule of 40 (EBIT margin) is a performance metric used to evaluate the balance between growth and profitability in software companies, combining EBIT margin and revenue growth rate.
The Rule of 40 is elegantly simple yet incredibly powerful: it's calculated as the sum of revenue growth rate plus free cash flow margin. This metric was developed by venture capitalists to understand how growth balances with profitability in high-growth companies. The beauty of this metric lies in its flexibility.
The "Rule of 90" in stocks most commonly refers to Warren Buffett's advice for his wife's inheritance: 90% in a low-cost S&P 500 index fund for growth and 10% in short-term government bonds for stability, designed for long-term investors. However, a more pessimistic "Rule of 90-90-90" suggests 90% of new traders lose 90% of their capital within 90 days, highlighting the high failure rate due to lack of education, emotional trading, and poor risk management.
The "7-3-2 Rule" refers to two main concepts: a financial strategy for wealth building, suggesting it takes 7 years for the first major savings milestone, 3 years for the next, and 2 years for the third, driven by compounding and increasing investments; and a trucking rule (7/3 split) allowing drivers to split their 10-hour mandatory break into 7 hours in the sleeper berth and 3 hours of off-duty rest, offering flexibility.
The 4 Forces of Growth Model
Learn to harness the forces of Opportunity, Problems, Courage, and Fear that determine whether your company keeps climbing or levels off.
The term “Rule of 40” was originally coined in 2015 by venture capitalists Brad Feld and Fred Wilson, referring to their view that venture-backed companies should strive to achieve 40% or greater when combining growth rate plus profitability margin.
Besides being an active investor and stock trader, he served as chairperson and director for several companies. He was also a co-founder of Akasa Air. He was investigated for insider trading and settled with the Securities and Exchange Board of India (SEBI) in 2021.
1. Warren Buffett – Net Worth: $142.7 Billion. Warren Buffett is the richest investor in the world. Warren Buffett made is first million by investing in a short list of strong companies.
Warren Buffett's 8+8+8 Rule — A Lesson for Every Professional This rule reminds us of the importance of balance in our daily lives: 8 hours for work, 8 hours for rest, and 8 hours for personal time. This principle highlights the value of employee well-being, productivity, and sustainable performance.
Yes, the Rule of 40 SaaS benchmark remains highly relevant in 2025. While fewer SaaS companies consistently hit the 40% threshold, it's still a trusted measure of financial health.
ROI is primarily focused on quantifiable metrics and financial outcomes, neglecting the intangible aspects of marketing. Factors such as customer perception, brand reputation, or social impact are difficult to quantify and may not be adequately reflected in ROI calculations.
The goal of a business is to create and keep customers. Profits are a measurement of how well the company does it. If you think the goal is profits, you will make decisions that alienate customers and eventually won't have a company.