How to read an income statement — revenue, profit & margins explained.

The income statement — also called the profit and loss (P&L) statement — is a financial report that shows a company’s revenues, costs, and profits over a specific period. It answers two essential questions: is this company profitable, and how efficiently does it generate that profit?

The income statement follows a top-to-bottom structure. It starts with revenue (the top line), subtracts various layers of costs, and ends with net income (the bottom line). Each layer reveals something different about the business: gross profit shows production efficiency, operating income shows management effectiveness, and net income shows total profitability.

Unlike the balance sheet — which is a snapshot of assets and liabilities at a single point in time — the income statement is like a video. It covers a quarter or a year and shows the financial results of business activity during that period. Understanding how to analyze an income statement is fundamental to stock analysis.

See how the income statement fits into the bigger picture by reading the complete guide to how to read stock fundamentals.

Revenue — also called sales or the top line — is the total money a company earns from selling its products or services. It is the first and most fundamental line on the income statement. Without revenue, nothing else on the statement matters.

Revenue growth rate is one of the most important momentum indicators for any business. Investors typically look at year-over-year (YoY) growth rather than sequential quarter-over-quarter changes, which can be distorted by seasonality. A company growing revenue at 15% annually is generally more valuable than one growing at 3%, all else being equal.

It is also important to understand whether growth is organic or driven by acquisitions. Organic growth comes from selling more products, raising prices, or entering new markets. Acquisition growth comes from buying other companies. Organic growth is generally viewed as higher quality. Our article on revenue vs earnings growth explains why the relationship between these two metrics matters.

Gross profit is revenue minus the cost of goods sold (COGS) — the direct costs of producing what the company sells. For a manufacturer, COGS includes raw materials and labor. For a software company, COGS includes server costs and customer support.

Gross margin — gross profit divided by revenue — is one of the best indicators of pricing power. A rising gross margin suggests the company can raise prices or reduce production costs, often a sign of a strong brand or economies of scale. A falling gross margin may indicate cost pressure, increased competition, or a weaker pricing position.

Gross margins vary enormously by industry. Software companies can have gross margins of 70-80% or higher. Retailers typically operate at 30-50%. Grocery stores may run at 20-30%. Comparing gross margins across the same sector is the most useful approach. Browse real-world margins on the US stocks page to see how different industries compare.

Operating income — also called operating profit or EBIT (earnings before interest and taxes) — is gross profit minus operating expenses. These expenses include selling, general and administrative costs (SG&A), research and development (R&D), and depreciation and amortization (D&A).

Operating income tells you how profitable the company’s core business operations are, excluding financing decisions and tax structures. A company with strong operating income but weak net income may simply have a lot of debt or a high tax burden — the underlying business could still be healthy.

Operating margin — operating income divided by revenue — measures management efficiency. It answers the question: for every dollar of revenue, how much is left after all operating costs? Compare operating margins across industry peers on the sectors page to understand what is normal for each industry.

Net income — also called net profit or the bottom line — is what remains after ALL expenses have been subtracted from revenue. This includes operating costs, interest on debt, taxes, and any one-time or non-operating items. It is the most comprehensive measure of profitability on the income statement.

Net profit margin — net income divided by revenue — shows what percentage of each dollar of revenue becomes actual profit. A 10% net margin means the company keeps ten cents of every dollar as profit.

Net income also feeds into earnings per share (EPS), which is used to calculate the P/E ratio. Diluted EPS accounts for stock options and convertible securities, giving a more conservative picture of per-share earnings. Understanding the income statement is essential before interpreting the P/E ratio explained.

EBITDA — earnings before interest, taxes, depreciation, and amortization — is a widely used profitability metric that strips out the effects of financing decisions, tax environments, and accounting estimates for long-term assets.

EBITDA is often used as a proxy for operating cash flow, though it is not the same thing. It excludes two real costs — depreciation and amortization — which means it can overstate cash available to the business, especially for asset-heavy companies. That said, EBITDA is very useful for comparing profitability across companies with different capital structures, debt levels, and asset bases.

A company expanding its operating EBITDA margin over time is generally improving its operational efficiency. However, EBITDA alone does not tell you whether a company is generating enough cash to maintain its equipment or pay down debt. That is why it is often paired with the EV/EBITDA ratio for a more complete valuation picture.

Continue learning by reading about free cash flow explained or the balance sheet explained. Or return to the full fundamentals guide to explore other ratios and metrics.