Introduction
A company can generate billions of dollars in sales and still lose money. Another business may generate far less revenue but earn stronger profits and produce more cash.
That is why revenue alone does not tell you whether a business is successful.
To understand how companies make money, you need to examine four connected concepts: revenue, expenses, profit margins and cash flow. Business valuation then helps explain how investors assess what a company might be worth.
These concepts are useful whether you are studying a public company, running a small business or trying to understand financial news.
1. Revenue: The Money a Business Earns From Sales
Revenue is the income a company recognises from providing goods or services before deducting its expenses.
Imagine an online retailer sells 10,000 products at an average recognised selling price of $50.
Its revenue would be:
10,000 × $50 = $500,000.
However, the retailer has not necessarily made $500,000 in profit. It must still pay for inventory, shipping, employees, marketing, technology, rent and other costs.
Revenue growth can be encouraging, but it is important to understand what is driving it. Sales may be increasing because the company is selling more products, charging higher prices or acquiring another business.
Growth funded by heavy discounts may have a very different effect on profitability from growth achieved through strong customer demand.
2. Expenses: What It Costs to Run a Business
Businesses incur different types of expenses.
Cost of goods sold (COGS): The direct costs associated with products sold or services delivered.
Operating expenses: Costs such as salaries, marketing, rent, research, software and administration.
Interest expense: The cost of borrowing money.
Taxes: Amounts owed to governments under applicable tax rules.
The way a business manages these costs can determine whether higher sales translate into higher profits.
For example, a retailer might increase sales by spending heavily on advertising. If the additional sales do not generate enough gross profit to cover that advertising, the growth may destroy value rather than create it.
3. Gross Profit vs Operating Profit vs Net Profit
These three measures describe different stages of profitability.
| Financial measure | What it tells you |
|---|---|
| Gross profit | Revenue minus cost of goods sold |
| Operating profit | Profit after operating expenses, before interest and taxes |
| Net profit | The profit remaining after expenses, interest and taxes |
Consider a hypothetical business with $1 million in revenue.
- Revenue: $1,000,000
- Cost of goods sold: $600,000
- Operating expenses: $250,000
- Interest and taxes: $50,000
Its gross profit is $400,000. Its operating profit is $150,000, and its net profit is $100,000.
The company earns $100,000 in net profit from $1 million in revenue.
That distinction matters when comparing companies. Two businesses with identical revenue can have very different financial performance because their cost structures differ.
4. Profit Margins: How Much Money a Company Keeps
A profit margin measures profit as a percentage of revenue.
Using the example above:
Gross margin: $400,000 ÷ $1,000,000 = 40%.
Operating margin: $150,000 ÷ $1,000,000 = 15%.
Net profit margin: $100,000 ÷ $1,000,000 = 10%.
A 10% net profit margin means the company keeps $0.10 in net profit for every $1 of revenue.
Higher margins can indicate pricing power, operational efficiency or a favourable business model. But there is no universally ideal margin. Retailers, software companies, manufacturers and banks operate under different economics.
It is usually more useful to compare a business with relevant competitors and its own historical performance.
5. Cash Flow: Why Profitable Companies Can Run Out of Money
Profit and cash flow are not the same.
Accounting profit recognises revenue and expenses under accounting rules. Cash flow tracks money moving into and out of the business.
A company might record a sale today but receive payment weeks later. Meanwhile, it may need to pay employees, suppliers and landlords immediately.
If the company cannot meet those obligations, it can face a cash crisis despite reporting a profit.
Three useful cash-flow concepts are:
- Operating cash flow: Cash generated or consumed by normal business operations.
- Investing cash flow: Cash used for or received from investments, including equipment and acquisitions.
- Financing cash flow: Cash raised from or returned to lenders and shareholders.
Free cash flow is commonly calculated as operating cash flow minus capital expenditures, although definitions can vary.
Free cash flow matters because it can help a business fund expansion, repay debt, build reserves or return capital to shareholders.
6. How Do Companies Actually Make Money?
Different business models generate profits in different ways.
Retail: Buy or produce goods and sell them at prices that cover costs and leave a margin.
Software subscriptions: Charge recurring fees for access to software or services.
Marketplaces: Earn commissions or fees when buyers and sellers transact.
Advertising: Sell access to an audience through advertising placements.
Financial services: Earn interest income, fees or other financial revenue, subject to funding costs and credit risks.
Manufacturing: Convert raw materials and components into finished products and earn a margin after production and operating costs.
The business model influences margins, cash flow, capital requirements and growth potential. A subscription business may receive recurring revenue, while a manufacturer may need substantial investment in equipment and inventory.
7. Business Valuation: What Is a Company Worth?
Business valuation attempts to estimate the economic value of a company or its ownership interests.
Investors may examine earnings, cash flow, assets, growth prospects, competitive advantages and financial risks.
Two common valuation measures are:
Price-to-earnings ratio (P/E): Market value of equity relative to earnings. It is useful for many profitable companies, but less meaningful when earnings are negative or unusually volatile.
Enterprise value to EBITDA (EV/EBITDA): Compares enterprise value with earnings before interest, taxes, depreciation and amortisation. It is often used to compare businesses with different financing structures, though it does not capture every cost of operating a business.
Valuation also depends on expectations. A company with strong anticipated growth may trade at a higher multiple than a slower-growing competitor.
That does not guarantee the expensive company will perform better. If future results disappoint, its valuation may decline.
8. Five Questions to Ask When Analysing a Company
Before concluding that a company is financially strong, consider:
- Is revenue growing, and what is driving the growth?
- Are gross and operating margins improving or deteriorating?
- Does the business generate cash consistently?
- Is its debt manageable relative to its earnings and cash generation?
- Is the current valuation reasonable relative to its prospects and risks?
These questions provide a useful starting point, but a full assessment should also consider industry conditions, competition, accounting policies and the company’s financial statements.
Frequently Asked Questions
Can a company have high revenue but low profit?
Yes. High operating costs, discounts, interest expenses and other charges can leave a company with little profit despite strong sales.
What is a good profit margin?
It depends on the industry and business model. Compare margins with similar companies and examine whether they are sustainable.
Is cash flow more important than profit?
Neither measure tells the whole story. Profit measures financial performance under accounting rules, while cash flow helps show whether the business generates and manages money effectively.
Why can a company lose money while its stock price rises?
Investors may expect future profitability, rapid growth or strategic advantages. However, those expectations may not be realised, and the stock price can fall if the outlook changes.
How can beginners analyse a business?
Start with its income statement, balance sheet and cash-flow statement. Review revenue growth, margins, debt, cash generation and valuation, then compare those measures with relevant competitors.
The Bottom Line
A successful business does more than generate sales. It must manage costs, earn sustainable margins, convert its operations into cash and invest capital effectively.
Revenue tells you how much business a company is doing. Profit tells you what remains after expenses. Cash flow helps reveal whether the business can meet its obligations and fund its future.
Understanding all three gives you a much clearer picture than looking at sales or a stock price alone.
