1. What you will learn
By the end of this lesson you will be able to build a driver tree that connects units and prices to operating profit, compute contribution and operating leverage, explain why a ten per cent fall in price hurts far more than a ten per cent fall in volume, distinguish evidence of competitive advantage from a story about it, and test whether two companies are genuinely comparable. This is education about business analysis and is not advice about any company or security.
2. The idea explained
Analysis begins below the revenue line. Revenue is units multiplied by price, and those two drivers behave completely differently. A unit sold carries its own variable cost, so extra volume brings in the difference between price and variable cost, which is called contribution. A rupee of price, by contrast, carries no cost at all, so it falls straight through to profit.
Fixed costs create leverage. Contribution first has to cover fixed operating costs, and only what remains is operating profit. So a small percentage change in volume produces a larger percentage change in profit, and the multiplier is contribution divided by operating profit. A company with high fixed costs has high operating leverage and its earnings will swing violently with demand.
Revenue growth must be decomposed before it means anything. It can come from more units, from higher prices, from acquiring another business, from a change in the mix of what is sold, or from an accounting change such as a different revenue recognition policy. Those five have entirely different implications for the future, and a growth rate reported without the decomposition is a number, not information.
Competitive advantage is a claim that requires evidence. Acceptable evidence includes returns on capital employed that stay above the cost of capital for years rather than quarters, customer retention or repeat purchase data, a demonstrable cost position such as a scale or location advantage that a competitor cannot replicate, and pricing that holds when competitors discount. A description of a strong brand, a large market opportunity or a visionary founder is a narrative, and narratives are free.
Comparability is the last discipline. Two companies deserve to be compared only if their economics and their accounting line up: similar capital intensity, similar treatment of costs that one may capitalise and the other expense, similar lease arrangements, similar accounting periods.
3. The market, the regulator and the rulebook
The evidence for all of this comes from filings. Indian companies prepare accounts under the Companies Act and the accounting standards notified under it, and listed companies publish quarterly results, annual reports and a range of continuous disclosures under the framework administered by the Securities and Exchange Board of India, the statutory securities regulator constituted by an Act of Parliament. Those documents appear on the company's own website and on the exchanges' sites.
Where the useful material actually sits is worth knowing. Segment reporting shows which part of the business earns what. The management discussion and analysis carries volume and capacity information that the financial statements omit. The notes give accounting policies, related-party transactions, contingent liabilities and lease obligations. The auditor's report and any qualification in it should be read before anything else.
A word about conduct. Research written for others in India is a regulated activity, and the registration requirements for research analysts and investment advisers are set by the regulator. A classroom report is an exercise, must say so, and must not be presented as a recommendation. Never quote a current tax rate or statutory threshold from memory; cite where it is published.
Worked example
4. Worked example
All figures are invented. A hypothetical business sells one thousand units at five hundred rupees each, with a variable cost of three hundred rupees a unit and fixed operating costs of one lakh rupees.
Revenue is one thousand multiplied by five hundred, which is five lakh rupees. Contribution is two hundred rupees a unit multiplied by one thousand units, which is two lakh rupees. Operating profit is two lakh less one lakh, which is one lakh rupees.
Now raise volume by ten per cent, to one thousand one hundred units, holding the price. Contribution becomes two hundred multiplied by one thousand one hundred, which is two lakh twenty thousand, and operating profit becomes one lakh twenty thousand. Profit rose twenty per cent on a ten per cent volume rise, and the multiplier of two is exactly contribution divided by operating profit in the base case.
Now instead cut the price by ten per cent, to four hundred and fifty rupees, holding volume at one thousand. Revenue falls by fifty thousand rupees. But the variable cost is unchanged at three hundred, so contribution falls to one hundred and fifty rupees a unit, or one lakh fifty thousand, and operating profit falls to fifty thousand. A ten per cent price cut halved the profit, while a ten per cent volume fall would have reduced it by only twenty per cent.
Finally, a return check. If the business employs five lakh rupees of capital, its base-case return on capital employed is one lakh over five lakh, which is twenty per cent. Whether that is evidence of advantage depends on whether it persists for years and whether it exceeds what the capital costs, neither of which one year's figure can establish.
5. Common mistakes and how to fix them
The first mistake is treating price and volume as interchangeable. Model them separately, because a rupee of price carries no cost and a unit of volume carries a variable cost.
The second is quoting a growth rate without decomposition. Split it into volume, price, mix, acquisition and accounting change before drawing any conclusion.
The third is calling high operating leverage good or bad. It amplifies in both directions, so state it as a fact about the cost structure and then ask how volatile demand is.
The fourth is accepting a narrative as evidence of advantage. Demand persistent returns on capital, retention data or a cost position that can be named and located.
The fifth is comparing companies with different accounting. Check capitalisation policies, leases and periods first, and say what you adjusted. Past performance does not indicate future results, no security is safe or guaranteed, and a SEBI-registered investment adviser is the person to consult about an individual's own money.
Key takeaways
6. Board summary
Revenue is units times price, and the two drivers behave differently because only volume carries variable cost. Contribution is price less variable cost per unit; operating profit is total contribution less fixed costs. Operating leverage equals contribution divided by operating profit, and it amplifies changes in both directions. A price cut damages profit far more than an equal percentage fall in volume. Competitive advantage needs persistent returns on capital, retention data or a nameable cost position, not a narrative.
Check your understanding
7. Practice and self-check
One. Two thousand units at three hundred rupees, variable cost one hundred and eighty, fixed costs one lakh eighty thousand. Revenue? Six lakh rupees.
Two. Contribution? One hundred and twenty a unit times two thousand, which is two lakh forty thousand.
Three. Operating profit? Sixty thousand rupees.
Four. Operating leverage? Two lakh forty thousand over sixty thousand, which is four.
Five. Volume rises five per cent. What happens to operating profit? It rises about twenty per cent, to seventy-two thousand.
Six. Instead the price falls five per cent, to two hundred and eighty-five. New contribution and operating profit? Contribution becomes one hundred and five rupees a unit, so two lakh ten thousand in total, giving operating profit of thirty thousand.
Seven. By what proportion did profit fall? By half, on a five per cent price cut.
Eight. Revenue grew fifteen per cent, of which eight points came from an acquisition. What is the organic figure and why does it matter? About seven points, because acquired growth is bought rather than earned and may not repeat.
Nine. Which part of an annual report usually carries volume and capacity data? The management discussion and analysis, cited with the report and its date.