Reading a P&L Statement
Part of the Data Analyst Roadmap
In short
Every company's health report is one page called the P&L. Learn to read it top to bottom, and you'll know where the money goes before the finance team explains it.
A basic read of a profit-and-loss statement — revenue, cost of goods sold, operating expenses, margin — enough to understand how your analysis connects to a company's actual financial health.

Think of it like this
The wedding caterer's final bill
The family pays the caterer Rs 5 lakh. Out go vegetables, ghee and gas. Then the cooks, rented utensils and the tempo. Then the loan interest and tax. Whatever is left in his pocket at the end is profit. A P&L is that same bill, written neatly.
Watch it happen
Reading a P&L from top to bottom
1/6Start with revenue: Rs 100 earned from selling products or services this period.
The big ideas
What you need to know
Read it like a waterfall
Revenue at the top, costs subtracted line by line, profit at the bottom. Each line answers a different question.
Margins beat raw numbers
Divide each profit line by revenue. A 60% gross margin tells you more than "Rs 60 crore gross profit".
COGS vs Opex
COGS grows with every unit sold, like raw material. Opex is the cost of running the company, like office rent.
Always compare periods
One P&L alone says little. Put this quarter next to last quarter and last year to see what changed.
See it in code
Walk through the code
1A1 Revenue B1 1002A2 COGS B2 403A3 Gross profit B3 =B1-B24A4 Gross margin B4 =B3/B15A5 Operating expenses B5 456A6 Operating profit B6 =B3-B57A7 Operating margin B7 =B6/B18A8 Interest and tax B8 59A9 Net profit B9 =B6-B81/3Gross profit and gross margin come first. They show if each sale earns more than it costs to make.
A mini P&L in a sheet. Change revenue or one cost and watch every margin below it move.
Save yourself the pain
Common mistakes
Oops
Celebrating revenue growth while gross margin is shrinking every quarter.
Do this instead
Check margins alongside revenue. Growing sales at a loss just makes the hole bigger.
Oops
Treating profit as cash in the bank.
Do this instead
Profit is an accounting number. A company can show profit and still run out of cash if customers pay late.
Your mission
Read a real P&L
Quick check
A D2C brand's revenue grew 40% but gross margin fell from 55% to 35%. What's the most likely story?
Go deeper
- 1Find a simplified public P&L example and identify each major line item.
- 2Learn the difference between gross margin and net margin.
- 3Practice connecting one of your analysis findings to its likely P&L impact.
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