EBITDA Explained: The Number Companies Love and Investors Should Question

EBITDA stands for earnings before interest, tax, depreciation and amortisation, and it measures the operating profit a company earns from its core business before the effects of how it is financed, how it is taxed, and the non-cash charges that reduce reported profit. In plain terms, it is an attempt to isolate the profitability of the underlying operations, stripped of financing and accounting choices, so that one business can be compared with another on roughly the same footing.

That single purpose, comparability, explains both why EBITDA became one of the most quoted numbers in finance and why some of the most respected investors treat it with open suspicion. It is a genuinely useful lens. It is also one of the easiest figures to hide behind.

How EBITDA Is Built

Start with net profit, the bottom line after everything has been deducted. EBITDA adds four things back: interest, tax, depreciation and amortisation. Each add-back has a rationale.

Interest is added back because it reflects a company’s financing decisions, not the quality of its operations. Two firms running identical factories will report different interest costs simply because one borrowed heavily and the other did not. Removing interest lets you compare the factories, not the balance sheets.

Tax is added back for a similar reason. Tax rates differ across jurisdictions, incentive schemes and one-off adjustments, and they say little about operating performance.

Depreciation and amortisation are added back because they are non-cash charges. Under Ind AS, when a company buys a machine or a tower, it does not expense the whole cost in one year. It spreads that cost across the asset’s useful life as depreciation (for physical assets) or amortisation (for intangibles like software or acquired licences). No cash leaves the business in the year the charge is booked, so EBITDA removes it to get closer to a cash-like measure of operating earnings.

The result is a number that answers a narrow question well: how much operating profit does this business throw off before we argue about debt, tax and accounting depreciation?

Why Companies and Deal-Makers Love It

EBITDA is popular for reasons that are not sinister. It allows an investor to line up companies with very different debt loads and tax situations and compare their operating engines directly. A lightly geared FMCG company and a heavily geared infrastructure developer are hard to compare on net profit, because interest and tax distort the picture. On EBITDA, at least the operating comparison is cleaner.

It is also the foundation of one of the most widely used valuation multiples: EV/EBITDA. Enterprise value (EV) is the market value of a company’s equity plus its net debt, which represents what it would cost to buy the whole business including its obligations. Dividing EV by EBITDA gives a multiple that, in principle, is neutral to capital structure. Because EV already includes debt, and EBITDA already excludes the interest on that debt, the two are consistent with each other. This is why bankers, private equity firms and analysts reach for EV/EBITDA when comparing companies across a sector, and why it features heavily in mergers, acquisitions and leveraged buyouts.

Then there is EBITDA margin, EBITDA divided by revenue, which many management teams quote as a headline measure of operating efficiency. A rising EBITDA margin can signal genuine improvement: better pricing, tighter costs, or operating leverage as fixed costs are spread over more sales.

So far, so useful. The problem is what EBITDA leaves out.

The Core Critique: What EBITDA Ignores

EBITDA ignores two costs that are very real for many businesses: capital expenditure and interest.

Consider depreciation again. EBITDA treats it as a mere accounting entry to be added back. But depreciation is the accountant’s estimate of a genuine economic cost: assets wear out. A telecom operator’s towers and fibre degrade. A cement plant’s kilns and grinding units age. A road or power asset physically deteriorates. To keep operating, these companies must spend real cash, year after year, replacing and maintaining that equipment. That spending is capital expenditure, or capex, and EBITDA sits entirely above it. A business can report handsome EBITDA while quietly ploughing most of it straight back into the ground just to stand still.

This is why capital-heavy and highly leveraged businesses look so much healthier on EBITDA than on cash or net profit. In India, telecom is the textbook illustration. Telecom operators carry large fixed-asset bases and heavy debt, run substantial depreciation charges, and pay significant interest. Their EBITDA margins can look robust precisely because EBITDA excludes the two costs (depreciation and interest) that weigh most heavily on the sector. The same pattern appears across infrastructure, roads, power and, to a meaningful degree, cement: sectors where the machinery to make money is expensive to build and expensive to maintain.

The scepticism is not new, and it is worth quoting the most famous version of it.

“Does management think the tooth fairy pays for capital expenditures?” Warren Buffett and Charlie Munger have long argued that referencing EBITDA as if it were true earnings amounts to pretending that the cost of replacing worn-out assets simply does not exist.

Their point is blunt but fair. For a business that must constantly reinvest, adding depreciation back flatters the picture. The cash to fund that reinvestment has to come from somewhere, and pretending it is free does not make it so.

Interest deserves the same caution. Adding interest back is defensible when you are comparing operations. It is misleading when you forget that a heavily indebted company still has to pay its lenders in cash, whatever its EBITDA says. A firm can grow EBITDA every year and still be squeezed by its interest bill.

A Simple Illustration

Consider a stylised, capex-heavy company. The figures below are illustrative and rounded, meant only to show how the layers of profit diverge, not to describe any specific firm.

Line item	Amount (Rs crore)
Revenue	1,000
Operating costs (excl. D&A)	650
EBITDA	350
Depreciation and amortisation	180
EBIT (operating profit)	170
Interest	110
Profit before tax	60
Tax	15
Net profit	45

The EBITDA margin here is 35 percent, which sounds strong. But by the time depreciation and interest are accounted for, the net profit margin is under 5 percent. And that is before asking the harder question: how much cash did the company actually spend on capex during the year to keep those assets running? If maintenance capex is close to the depreciation charge, then a large slice of that 350 crore of EBITDA never reaches shareholders as free cash at all. The headline number and the money that is genuinely left over are two very different things.

This gap between EBITDA and cash is exactly where careful reading matters. Two companies can report the same EBITDA and be in completely different financial health, depending on how much they must reinvest and how much they owe.

EBITDA Margin and EV/EBITDA, Read Correctly

Both of the popular EBITDA-based measures are fine tools when read in context and misleading when read alone.

EBITDA margin is useful for tracking a single company over time or comparing operating efficiency within a sector. Its blind spot is capital intensity. A high EBITDA margin in a capex-heavy sector may reflect the nature of the business (large fixed assets, high depreciation below the EBITDA line) rather than any advantage in cash generation. The right companion figures are free cash flow, capex as a share of revenue, and the trend in both.

EV/EBITDA is useful for comparing businesses with different debt levels, which is precisely why it is popular in deal-making. Its blind spot is that a low multiple on a capex-heavy or debt-laden business is not automatically a bargain, and a high multiple on an asset-light business is not automatically expensive. The multiple is a starting question, not an answer. It has to be read alongside how much of that EBITDA survives capex and interest to become cash.

None of this makes EBITDA a bad number. It makes it an incomplete one.

How to Use EBITDA Without Being Misled

Treat EBITDA as one instrument on the dashboard, never the whole dashboard. A few habits keep it honest.

• Always read EBITDA next to free cash flow. The gap between the two is the story. A business whose EBITDA is large but whose free cash flow is thin is telling you that capex and working capital are eating the difference.
• Check capex intensity. Look at capital expenditure as a share of revenue and against the depreciation charge. If a company must spend heavily just to maintain its assets, its EBITDA overstates what is genuinely available to owners.
• Do not ignore interest and debt. For a leveraged business, EBITDA that comfortably covers the interest bill is reassuring; EBITDA that barely does is a warning, however healthy the margin looks.
• Be wary of “adjusted” EBITDA. When management strips out an ever-growing list of “one-off” items to arrive at a flattering adjusted figure, ask what is being excluded and why. Recurring costs have a way of being labelled exceptional.
• Compare like with like. EBITDA is most meaningful within a sector and least meaningful across sectors with very different capital needs. An asset-light services firm and a tower-heavy telecom operator are not measured on the same yardstick just because both quote an EBITDA margin.

Used this way, EBITDA does what it was designed to do: it isolates operating performance so you can compare businesses fairly. The mistake is to let it stand in for cash, for profit, or for value. The number companies love is a legitimate starting point. The investor’s job is to keep reading past it.

Altys Labs publishes educational research on Indian equities. This article is for general education only. 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 cited are illustrative or drawn from public filings and are approximate.