The Income Statement Explained (P&L)

The income statement — often called the P&L — shows how much a company earned and spent over a period, ending in a single figure: profit or loss. It reads top to bottom, from revenue down to the "bottom line."

If the balance sheet is a snapshot of where a company stands, the income statement is the story of how it performed over a stretch of time. It’s the statement people usually mean when they ask "is the company profitable?"

Top line to bottom line

The income statement covers a period — a quarter or a year. Revenue (sales) sits right at the top, which is why it’s nicknamed the "top line." From there, you subtract costs step by step, working downward until you reach net income at the very bottom — the famous "bottom line." Everything in between is just the story of what ate into those sales.

Gross profit: the first cut

The first subtraction is the cost of goods sold (COGS) — the direct cost of producing whatever was sold. Revenue minus COGS gives gross profit, which shows how profitable the core product is before overheads, interest, and tax enter the picture. Divide gross profit by revenue and you get the gross margin, a quick read on how much room a product leaves after its basic costs.

Operating profit: running the business

Next come operating expenses — salaries, marketing, research, rent, and the like (often bundled as "SG&A"). Subtract those from gross profit and you get operating profit, also known as operating income or EBIT (earnings before interest and tax). This is a good measure of how well the actual business runs, stripped of how it’s financed or taxed.

Down to net income

Finally, from operating profit you subtract interest (the cost of any debt) and taxes. What’s left is net income — the profit that belongs to shareholders. Divide it by the number of shares and you get earnings per share (EPS), the figure that feeds straight into the P/E ratio.

Profit is not cash

Here’s the trap that catches beginners: net income is an accounting figure, not the cash a company banked. It includes non-cash items like depreciation, and it follows accrual accounting — revenue and costs are booked when they’re earned or incurred, not when the money actually moves. A company can report a healthy profit and still be short of cash, which is exactly why there’s a separate cash flow statement to track the real money.

Key takeaways

The income statement covers a period, flowing from revenue to net income.
Gross profit strips out direct costs; operating profit strips out overheads.
Net income divided by shares gives EPS, which drives the P/E ratio.
Profit is an accounting figure — not the same as cash in the bank.

The income statement, explained