What is the rule of 40 in cash flow?

Asked by: Mallory DuBuque  |  Last update: May 20, 2026
Score: 4.5/5 (72 votes)

The Rule of 40 is a software-as-a-service (SaaS) benchmark stating that a company’s combined revenue growth rate and profit margin (often Free Cash Flow) should equal at least 40%. It balances aggressive growth with profitability, where a sum ≥ 40 % ≥ 4 0 % indicates a healthy company, popularized as a "minimum point of happiness".

What is the rule of 40 formula?

Rule of 40 = Revenue Growth Rate (%) + Profit Margin (%)

Some other potential examples of the Rule of 40 include the following: Revenue Growth Rate of 20% + Profit Margin of 20% = 40% Revenue Growth Rate of 0% + Profit Margin of 40% = 40%

What is a good rule of 40 score?

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.

What does a 40% margin mean?

Margin = ((Selling Price – Cost Price) / Selling Price) x 100. For example, suppose you sell a product for $100. If it costs $60 to produce, your margin would be: Margin = ((100 – 60 / 100) × 100) = 40% This means 40% of the selling price is profit, while 60% represents the production cost.

How can the rule of 40 be misleading?

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.

The SaaS Rule of 40 | How to Calculate and Why It Matters

37 related questions found

What is a 40% margin on $50?

Set your selling price: You decide to sell it for $50. Subtract cost from revenue: $50 – $30 = $20 profit. Divide profit by revenue: $20 / $50 = 0.4. Convert to a percentage: 0.4 × 100 = 40% profit margin.

What is the $27.39 rule?

The "27.39 rule" (often rounded to $27.40) is a simple financial strategy to save $10,000 in one year by consistently setting aside $27.40 every single day, making it an achievable micro-saving habit to build wealth or an emergency fund. It turns the daunting goal of saving $10,000 into a manageable daily action, emphasizing consistency over large lump sums.

What is the rule of 40 in Excel?

Rule of 40 Definition: In Software as a Service (SaaS) financial models, the “Rule of 40” states that a company's Revenue Growth + EBITDA Margin should equal or exceed 40% to be considered “healthy”; companies that exceed it by a wider margin may be valued more highly.

What is the 70 30 rule Warren Buffett?

Some have interpreted this to mean investing 70% of a portfolio in stocks and 30% in bonds, although work-outs seem to suggest special situations, which differ from bonds. Either way, Buffett has given different investment advice to investors based on their experience.

How long will $500,000 last using the 4% rule?

Your $500,000 can give you about $20,000 each year using the 4% rule, and it could last over 30 years. The Bureau of Labor Statistics shows retirees spend around $54,000 yearly. Smart investments can make your savings last longer.

What is the $13.70 rule?

Ramsey's tweet puts into perspective how easy it is to lose track of your spending when done in small amounts. Many people don't realize how quickly those "little" purchases can add up. $13.70 a day may not feel like much, but when multiplied by 365 days, you've spent $5,000 on things you likely didn't need.

At what age should you have $100,000 saved?

I tell young people all the time, by the time you hit 33 years old you should have at least $100,000 saved somewhere. Make that your goal. That's the age when it's really time to start getting FOCUSED on saving.

What is Warren Buffett's $10000 investment strategy?

If Warren Buffett had $10,000 today, he'd focus on finding overlooked, high-quality small companies (small-caps) at attractive prices, buying them as businesses, not just stock tickers, and letting compound interest work over a long period by starting early and reinvesting dividends, much like he did in his early days, emphasizing fundamental value over market hype. 

How much money do I need to invest to make $3,000 a month?

To make $3,000 a month ($36,000/year) from investments, you need a significant lump sum or consistent, high-yield income streams, with estimates ranging from roughly $300,000 at a 12% yield to over $700,000 for stable Dividend Aristocrats, depending on your investment type, dividend yield, risk tolerance, and strategy. A simple formula is: Investment Needed = ($3,000 x 12) / Annual Dividend Yield. 

How to get 100% profit margin?

((Revenue - Cost) / Revenue) * 100 = % Profit Margin

The higher the price and the lower the cost, the higher the Profit Margin. In any case, your Profit Margin can never exceed 100 percent, which only happens if you're able to sell something that cost you nothing.

Can I predict future profits?

Historical data can be used for revenue prediction by analyzing previous sales, revenue trends, and financial performance. Time series analysis and regression analysis methods often rely on historical data to make predictions.

Is 50% margin 100% markup?

Margin vs markup: markup is the amount added to a product's cost to determine its selling price, while margin represents the profit as a percentage of the selling price. A 50% margin corresponds to a 100% markup. Understanding this relationship is vital for businesses when applying appropriate pricing strategies.