Reading Debt: Debt-to-Equity and Interest Coverage, Explained

To read a company’s debt, look at two things together: how much it borrows relative to what its owners have put in, and whether its profits comfortably cover the interest on that borrowing. The first is the debt-to-equity ratio and the second is the interest coverage ratio, and the second is usually the one that separates a manageable balance sheet from a fragile one.

Debt is not inherently bad. Borrowing lets a company build factories, lay pipelines or fund growth faster than retained profits alone would allow, and interest is tax-deductible under Ind AS accounting. The danger is not debt itself but debt a business cannot service when conditions turn. That distinction is exactly what these two ratios are built to reveal.

The two ratios, side by side

The debt-to-equity ratio divides total borrowings by shareholders’ equity. It answers a simple question: for every rupee the owners have committed, how many rupees has the company borrowed? A ratio of 0.5 means the business is funded roughly two-thirds by owners and one-third by debt. A ratio of 2 means debt is twice the equity base, a far more leveraged position.

The interest coverage ratio divides operating profit (EBIT, earnings before interest and tax) by the interest expense for the period. It answers a different question: how many times over can the company’s operating profit pay its interest bill? A coverage of 6 means profits cover interest six times with room to spare. A coverage near 1 means almost all operating profit is consumed by interest, leaving nothing for taxes, reinvestment or a bad year.

Measure	What it divides	What it tells you
Debt-to-equity	Total borrowings / shareholders’ equity	The size of the debt load relative to owners’ capital
Interest coverage	Operating profit (EBIT) / interest expense	The ability of profits to actually service that debt

One measures the mix of funding. The other measures the margin of safety. Read alone, either can mislead. Read together, they give a fair picture of solvency.

What healthy and stretched look like

There is no universal cutoff, but some general reference points help. On debt-to-equity, a ratio comfortably below 1 is often described as conservative, a ratio around 1 to 2 as moderately geared, and a ratio well above 2 as aggressively leveraged. On interest coverage, a figure above roughly 4 to 5 times is generally reassuring, a figure between 2 and 3 warrants attention, and a figure slipping toward 1 is a clear stress signal.

The table below sketches the broad pattern. Treat it as a lens, not a rulebook.

Signal	Healthier range	Stretched range
Debt-to-equity	Below about 1	Above about 2
Interest coverage	Above about 4-5 times	Below about 2 times
Trend over years	Coverage stable or rising	Coverage steadily falling

The trend line matters as much as the level. A company whose coverage has drifted from 8 times to 3 times over a few years is telling a story, even if 3 times still sounds adequate. Direction often precedes distress.

Why the answer is sector-dependent

The single biggest mistake in reading debt is applying one benchmark to every business. Capital intensity varies enormously across the market, and so does the debt a business can sensibly carry.

Utilities, power generation, infrastructure, roads and real estate are capital-heavy by nature. They build long-lived assets that produce steady, predictable cash flows over decades, and it is normal and often efficient for them to fund a good portion of that with debt. A debt-to-equity ratio that would look alarming for a software firm can be entirely routine for a power distribution company.

At the other end sit asset-light businesses. Established IT services firms, consumer goods (FMCG) companies and many branded pharmaceutical players generate strong cash from relatively small fixed-asset bases, and many carry little or no net debt at all. For them, a rising debt load is unusual enough to merit a question rather than a shrug.

Debt should be judged against a company’s own sector and its own past, not against a single number pulled from a textbook. The right question is never “is this ratio high?” but “is this ratio high for this kind of business?”

This is why comparison is the heart of the exercise. Line a company up against three or four genuine peers in the same industry, look at where it sits on both ratios, and the outliers become visible quickly.

Why interest coverage often reveals more

Of the two, interest coverage is frequently the more honest indicator, because it connects the balance sheet back to the profit and loss account. Debt-to-equity is a snapshot of a company’s structure. Interest coverage is a live test of whether that structure is actually affordable right now.

Consider two companies with identical debt-to-equity ratios. One earns operating profits that cover its interest ten times over; the other covers it barely twice. The first can absorb a rough year, a rate hike from the RBI or a demand slump and keep paying its lenders. The second is one bad quarter away from trouble. The debt ratios look the same; the risk profiles are not remotely alike.

The reverse holds too. A business can carry what looks like a heavy debt load and still be perfectly sound if its cash flows are large and dependable enough to service that debt with ease. Size of borrowing tells you the stakes; coverage tells you the strain.

This is why a low or, more tellingly, a falling interest coverage ratio is one of the most reliable early distress signals in fundamental analysis. When coverage compresses, it usually means either profits are shrinking, interest costs are climbing, or both, and each of those tends to feed on itself.

The lesson from India’s credit cycles

India learned this at scale in the 2010s. Through the preceding boom, a wave of companies in infrastructure, power, metals and mining borrowed heavily to fund large expansion projects, on the assumption that demand and prices would keep climbing. On paper, during good years, the interest was covered.

Then the cycle turned. Commodity prices softened, projects were delayed, capacity ran ahead of demand, and operating profits fell. Interest bills, however, did not fall; they were fixed obligations. Coverage ratios that had looked comfortable collapsed toward 1 and below, and a number of over-leveraged businesses could no longer service their loans. Those stressed loans piled up on bank balance sheets and became the non-performing asset (NPA) problem that weighed on the Indian banking system for years and eventually drove the RBI’s asset-quality reviews and the insolvency reforms that followed.

The general lesson, drawn without singling out any single company, is durable: leverage that looks safe at the top of a cycle can become unpayable at the bottom, and interest coverage is the ratio that shows the strain first. Debt taken on against optimistic, cyclical profits is exactly the debt that turns dangerous when those profits normalise.

Banks and NBFCs are a different exercise

One important exception: none of the above applies in the usual way to banks and non-bank finance companies (NBFCs). For a lender, borrowing is not a means to an end, it is the raw material of the business. A bank takes in deposits and borrowings and lends them out; a high debt-to-equity ratio is simply the nature of the model, not a warning sign.

Financials are therefore judged on a different toolkit: capital adequacy against regulatory minimums, the quality of the loan book, provisioning against bad loans, and the net interest margin they earn. Applying a manufacturing company’s debt-to-equity yardstick to a bank produces a number that is both alarming and meaningless. This is why Altys treats financial companies as a separate category and does not read their leverage the same way.

What to watch for

• Compare within the sector. A debt-to-equity ratio only has meaning next to genuine peers and the company’s own history. Never judge it against a single fixed threshold.
• Weight interest coverage heavily. It is the ability-to-pay test. Strong coverage can justify a large debt load; weak coverage undermines even a modest one.
• Follow the trend, not just the level. Steadily falling coverage over several years is a classic early warning, even while the absolute figure still looks acceptable.
• Ask where the profits come from. Debt serviced by cyclical or one-off profits is far riskier than debt serviced by steady, recurring cash flows.
• Skip these ratios for lenders. For banks and NBFCs, look at capital adequacy, asset quality and provisioning instead.

Read the two ratios together, in the context of the industry and the cycle, and you move from asking “how much does this company owe?” to the far more useful question: “can it comfortably pay for what it owes, in good years and bad?”

This article is educational and general in nature. Altys Labs is not a SEBI-registered Research Analyst or Investment Adviser, and nothing here is a recommendation to buy, sell or hold any security. Figures are approximate and drawn from public filings for illustration.