The ratios that actually matter: ROE, ROCE, margins, turnover

You now know how to read the three statements. The trouble is that a statement is a wall of absolute numbers — ₹4,200 crore of revenue, ₹612 crore of profit, ₹3,100 crore of equity — and absolute numbers don't mean anything on their own. Is ₹612 crore of profit good? Impossible to say until you ask: good relative to what? Relative to the sales that produced it, the capital that was risked to earn it, the assets that were employed. Ratios are simply numbers put in context, and context is where judgement begins.

The danger is the opposite extreme. Screeners throw forty ratios at you, and a beginner drowns. The honest truth is that a small handful carry almost all the signal, and they fall into three families: how profitable are the sales (margins), how hard does the capital work (returns on capital), and how efficiently are the assets used (turnover). Master those three families and how they connect, and you can size up a business in minutes.

Returns on capital: the single most important idea

If you remember one ratio from this entire module, make it a return-on-capital ratio. A business exists to take capital and turn it into more capital. The question that matters above all others is: for every rupee tied up in this business, how many paise of profit does it throw off each year? That is what return-on-capital ratios measure, and a business that earns 25% on its capital is a fundamentally different animal from one earning 8%, even if both report the same rupee profit.

There are two cousins here, and the difference between them matters. Return on equity (ROE) is net profit ÷ shareholders' equity. It answers the owner's question directly: on the money that belongs to me, what return am I getting? Return on capital employed (ROCE) is operating profit (EBIT) ÷ capital employed (equity plus debt), and it answers a purer question: how good is the business itself at turning total invested capital into operating profit, before the financing structure muddies things?

In the Indian market, durable double-digit ROCE — consistently above the cost of capital, year after year, without heavy leverage — is one of the most reliable signatures of a quality business. A company earning 8% on capital while borrowing at 9% is, in plain terms, destroying value: it would be better off shutting the operation and putting the money in a fixed deposit. Many busy-looking, revenue-growing companies are doing exactly this, and the return ratios are what expose it.

Margins: how much of each rupee of sales survives

We met the margins in the income-statement chapter. As ratios, their job is comparison and trend. Operating margin (EBIT ÷ revenue) is usually the most honest single profitability ratio, because it captures the core business before the noise of financing and one-offs. Net margin (PAT ÷ revenue) tells you what finally reaches the owner.

But margins on their own are a trap, and here's the trap: a high margin is not the same as a good business. A jeweller might run a 4% net margin and a brilliant business; a niche software firm might run a 30% margin and a terrible one. Why? Because margin ignores how much capital you had to lock up to earn it. The jeweller might turn its capital over six times a year; the software firm might be drowning in unpaid receivables. Margin is only half the story — which brings us to turnover.

Asset turnover: how hard the capital is working

Asset turnover is revenue ÷ assets — how many rupees of sales each rupee of assets generates. A supermarket has thin margins but spins its assets furiously (stock in, sold, restocked, week after week); a power utility has fat margins but enormous, slow-turning assets. Neither is better in the abstract. What matters is the combination of margin and turnover, because that combination is what actually produces the return on capital.

How the ratios connect — and why trends beat snapshots

These ratios are not independent trivia; they're a chain. Margin and turnover multiply into return on assets; add the financing structure and you get return on equity. Read together, they tell a coherent story about how a company makes its money and therefore what would threaten it. Read in isolation, any single one can mislead — which is the whole reason beginners get burned chasing a single gaudy number.

The reward for this discipline is enormous. Once the ratios become second nature, you stop reading companies as stories and start reading them as machines for turning capital into more capital — and you can tell, fairly quickly, whether a given machine is efficient, fragile, or quietly broken. That shift, from story to machine, is most of what separates an owner from a punter.