Reading an Income (P&L) Statement
Understanding revenue, expenses, and profit to see how a company makes money.
Why it matters
The profit and loss statement, also called the income statement, is where a company sets out the money it brought in, the costs it took out, and the profit it kept over a set period such as a quarter or a full year. A balance sheet is a photo taken at one instant. The P&L is the video of the whole year, showing how the money actually moved.
A price chart tells you what the market is feeling. The P&L tells you what the business actually did. Read it well and you can see whether sales are growing, whether costs are under control, and how much of each rupee of sales survives all the way to the bottom line. Almost every other number an investor uses, earnings per share, margins, the P/E ratio, is built from figures on this one statement.
An everyday way to picture it
Picture your own month. Your salary lands first. Then costs come out in a set order: the essentials you cannot skip, then the smaller running costs, then the loan EMI, then the income tax the government takes. Whatever survives all of that is your saving. A company P&L reads from the top down in exactly that order, and the profit is simply what is left at the bottom.
| Your month | A company P&L |
|---|---|
| Salary that arrives | Revenue (sales) |
| Groceries and raw essentials | Cost of goods sold |
| Rent, bills, travel, subscriptions | Operating expenses |
| Loan EMI | Interest |
| Income tax | Tax |
| What you save | Net profit |
If your salary rises while your spending holds steady, your saving grows. The same logic decides whether a company keeps more of every rupee it earns. The order matters too: a cost taken out near the top, like the raw materials, hurts far more than a small expense near the bottom.
The waterfall, line by line
Revenue starts at the top, and each layer of cost is taken out in turn. Three checkpoints along the way, gross profit, operating profit, and net profit, each answer a different question about the business. Here is the full waterfall for Sunrise Foods, our worked example throughout these lessons.
| Particulars | Amount (₹ crore) |
|---|---|
| Revenue (sales) | 2,000 |
| Less: Cost of goods sold | 1,200 |
| Gross profit | 800 |
| Less: Operating expenses | 500 |
| Operating profit (EBIT) | 300 |
| Less: Interest | 30 |
| Less: Tax | 70 |
| Net profit | 200 |
Each checkpoint becomes a margin once you divide it by revenue. A margin is just the share of every ₹100 of sales that survives to that point, which lets you compare a small company with a giant on equal terms.
The gross margin shows how cheaply the company can make what it sells. A wide gross margin usually signals pricing power or a low-cost product. The operating margin is the cleanest read on the core business, because it strips out how the company is financed and how it is taxed. The net margin is the final slice that belongs to owners, after interest and tax are paid.
Two companies can report the same net profit while one carries no debt and the other is buried in interest payments. Operating profit, or EBIT, judges the core business on its own, before loans and tax enter the picture. If a company has a strong operating profit but a thin net profit, the problem is usually the balance sheet, too much debt, rather than the product itself.
- Recurring beats one-off. Profit from selling more product, year after year, is what you are really buying. A jump from selling a building or a tax refund is a one-off that will not repeat.
- Watch the "other income" line. If most of the profit comes from outside the main business, the headline number is flattering a weaker operation.
- Margins tell the trend. Rising sales with falling margins means costs are winning. That is worth more attention than the size of the profit in any single year.
See it for yourself
Move each cost and watch it flow down to net profit and the three margins. The sliders start where Sunrise sits, so net profit lands at 200 crore and EPS at 20.
| Particulars | Amount |
|---|---|
| Revenue | ₹2,000 crore |
| Less: Cost of goods sold | ₹1,200 crore |
| Gross profit | ₹800 crore |
| Less: Operating expenses | ₹500 crore |
| Operating profit (EBIT) | ₹300 crore |
| Less: Interest and tax | ₹100 crore |
| Net profit | ₹200 crore |
Squeeze the margins
Hold revenue steady and push the two big cost lines up or down. Watch how quickly the margins move.
Trace the three-year trend
One year tells you little. A run of years tells you whether sales and profit are really growing. These start with Sunrise's own three-year record.
| Year | Revenue | Net profit |
|---|---|---|
| Year 1 | ₹1,600 crore | ₹150 crore |
| Year 2 | ₹1,790 crore | ₹175 crore |
| Year 3 | ₹2,000 crore | ₹200 crore |
| Step | Revenue growth | Profit growth |
|---|---|---|
| Year 1 to Year 2 | 11.9% | 16.7% |
| Year 2 to Year 3 | 11.7% | 14.3% |
Worked example: Sunrise Foods
Sunrise Foods makes packaged snacks and staples sold across India. It is a steady, profitable consumer brand, the kind of business a beginner can reason about without specialist knowledge.
Last year Sunrise sold ₹2,000 crore of packaged food. Follow each rupee down the statement and you arrive at the net profit, and from there at earnings per share.
| Step | Working | Result |
|---|---|---|
| Revenue | Total sales for the year | ₹2,000 crore |
| Gross profit | ₹2,000 crore - ₹1,200 crore COGS | ₹800 crore (40%) |
| Operating profit (EBIT) | ₹800 crore - ₹500 crore opex | ₹300 crore (15%) |
| Net profit | ₹300 crore - ₹30 crore interest - ₹70 crore tax | ₹200 crore (10%) |
| EPS | ₹200 crore ÷ 10 crore shares | ₹20 per share |
So out of every ₹100 of sales, Sunrise keeps ₹10 as net profit, and that ₹200 crore divided by its 10 crore shares gives EPS of ₹20. This is the same EPS the P/E lesson uses to value the stock at a price of ₹500.
Now you decide. You run Sunrise, a key supplier raises prices, and your cost of goods sold rises by 10 percent, from ₹1,200 crore to ₹1,320 crore. You choose not to pass the increase on to shoppers. Here is what the statement does in response.
| Line | Before (₹ crore) | After a 10% cost rise (₹ crore) |
|---|---|---|
| Revenue | 2,000 | 2,000 |
| Gross profit | 800 | 680 |
| Operating profit (EBIT) | 300 | 180 |
| Net profit | 200 | about 110 |
| EPS (₹) | 20 | about 11 |
The selling price never changed, yet net profit nearly halved and EPS fell from ₹20 to about ₹11. That is operating leverage running in reverse: when margins are thin, a small move in costs swings the bottom line hard. It is the single best reason to watch margins, not just the size of the profit.
Spot the red flag
Three patterns that show up in real income statements. Read each one and decide what it is telling you.
Sales up 20 percent, but net profit down 10 percent
What does this most likely mean?
Remember this
| Checkpoint | What it measures | How to read it |
|---|---|---|
| Revenue | Total sales for the period | Growing year after year shows real demand. |
| Gross profit | Sales minus the direct cost of the product | A wide gross margin signals pricing power. |
| Operating profit (EBIT) | Profit from the core business, before interest and tax | The cleanest read on the operation itself. |
| Net profit | What is left for shareholders | Check it is recurring, not a one-off gain. |
| Margins | Each profit divided by revenue | Falling margins matter more than a single good year. |
In short: the P&L is the story of how a company earns, spends, and keeps money. Follow revenue down to net profit, watch the three margins, and prize profit that is recurring and growing over a number that just happens to look big this year.