EBITDA – earnings before interest, taxes, depreciation, and amortization – is a central part of the language of finance. Lenders size debt capacity as a multiple of EBITDA, M&A advisors anchor valuations around it, and it has become the default measure of financial performance and success for business owners.

Yet the acronym can be as misleading as it is popular. Prominent investors – including Warren Buffett and Charlie Munger – have long criticized the metric, referring to it as “utter nonsense.” Buffett argues that EBITDA masks real economic costs and cash outflows – such as depreciation and interest expense, taxes, and capital expenditures – making businesses appear healthier than they are. Munger has similarly noted that “people who use EBITDA are either trying to con you or they’re conning themselves.” While its simplicity makes it appealing for comparison, EBITDA is ultimately an imperfect proxy – not a precise measure – of cash flow.

Our goal is to highlight both the benefits and limitations of EBITDA and provide practical guidance on where it adds value and where it can lead to misguided conclusions.

The how and why of EBITDA

EBITDA rose to prominence because it provides a simplified view of operating performance by removing nonoperating and noncash elements. By focusing on core profitability, it helps owners and investors evaluate pricing, cost control, and operating efficiency more directly. It also facilitates cross-industry comparisons, and valuations are often expressed as a multiple of EBITDA.

The origins of EBITDA are commonly traced to John Malone, former CEO of Tele-Communications Inc. (TCI), who popularized the metric in the 1970s. TCI carried significant debt from building cable infrastructure, resulting in substantial depreciation charges and low reported net income, masking the actual cash available for growth.

Malone argued that after-tax earnings were not the key metric for a company investing heavily in growth. By emphasizing EBITDA over GAAP net income, he highlighted the cash generation available to support a high-debt, high-growth strategy.

Following its adoption in asset-intensive industries, EBITDA became a standard metric in leveraged buyouts (LBOs) in the 1980s and 1990s, where the central question is whether a company can generate enough cash flow to service elevated debt levels.

Over time, EBITDA became embedded in financial practice, including debt covenants, valuation frameworks, M&A, and internal reporting.

Cash is king: The limits of the EBITDA metric

Despite its prevalence, EBITDA is far from perfect – and in an industry where “cash is king” in the long term, it is not cash. It ignores several economic realities of running a business, including capital expenditures, working capital changes, debt service, and taxes.

Buffett famously wrote in the 2000 Berkshire Hathaway Letter to Shareholders:

When Charlie and I read reports, we have no interest in pictures of personnel, plants or products. References to EBITDA make us shudder – does management think the tooth fairy pays for capital expenditures? We’re very suspicious of accounting methodology that is vague or unclear, since too often that means management wishes to hide something.

This critique highlights a central point: EBITDA can obscure the real costs of sustaining and growing a business.

Consider two companies, each generating $10 million of EBITDA.

• Company A: An asset-light services business with $500,000 of capital expenditures per year, converting 95% of its EBITDA to cash
• Company B: A capital-intensive manufacturer with $3 million of capital expenditures per year, converting just 70% of its EBITDA to cash given higher capital expenditures

EBITDA alone suggests these businesses are comparable, but their cash generation differs significantly.

Now consider the same example, but with each company servicing a $40 million term loan at 6% interest and 5% amortization per year. The divergence in EBITDA to cash conversion becomes more pronounced – Company A converts 51% of its EBITDA into cash, while Company B converts just 26%.

The takeaway: Identical EBITDA can mask very different underlying economics and cash generation. Over time, an overreliance on EBITDA as a measure of success can lead to misguided capital allocation decisions, where significant capital outlays generate incremental EBITDA but little corresponding growth in free cash flow. Ultimately, value is defined as the net present value of future cash flows; a multiple of EBITDA is simply an expression of that – an output, rather than an input, in a more fundamental approach to valuation.

(Mal)adjusted EBITDA

Because EBITDA is not defined under GAAP, there are no standardized rules governing its calculation, and it is often adjusted. Common adjustments include:

• One-time or nonrecurring expenses (e.g., restructuring costs, legal settlements) or income (e.g., gains on asset sales, insurance proceeds)
• Owner adjustments (e.g., above- or below-market compensation, family payroll and expenses)
• Related-party items (e.g., above- or below-market rent on shareholder-owned real estate)

Given the lack of standardization, companies, investors, and bankers have significant latitude in how EBITDA is adjusted. As a result, “adjusted EBITDA” can diverge meaningfully from economic reality.

For example, a sell-side M&A banker may present adjusted EBITDA to reflect perceived run-rate earnings power, including forward-looking, pro forma adjustments for implemented cost savings or recently signed contracts not yet reflected in historical results. In contrast, a lender will define adjusted EBITDA more conservatively – favoring repeatable, verifiable measures to support leverage and covenant testing – and is less likely to incorporate forward-looking adjustments.

Both perspectives are purposeful, but they serve different objectives: The sell-side advisor seek to maximize valuation, while the lender is focused on credit quality and repayment capacity.

While optimizing EBITDA is important for valuation and financing, credibility and consistency are equally critical. Clearly supported, normalized EBITDA builds trust with lenders, investors, and buyers. To that end, companies often engage third-party firms to perform financial due diligence and quality of earnings analyses to validate reported results and adjustments.

EBITDA vs. reality: What it does – and does not – tell you

While widely used for comparison, EBITDA can obscure the true financial health of a business. Understanding its merits – and limitations – and complementing it with measures like pretax profit and free cash flow provides a more complete picture and supports better decision-making.

Used thoughtfully, EBITDA can be a valuable tool, but owners should couple their EBITDA analysis with free cash flow conversion – how effectively EBITDA translated into cash after funding working capital, capital expenditures, taxes, and debt obligations. Free cash flow helps owners assess:

• True liquidity (less susceptible to manipulation)
• Growth capacity (through working capital and capital expenditures)
• Returns on capital investment (remaining cash for distribution)

As finance scholar Alfred Rappaport, author of “Creating Shareholder Value,” once observed: “In the long run, cash is a fact. Earnings are an opinion.”

EBITDA as a starting point, not the destination

EBITDA remains one of the most widely used metrics for evaluating operating performance, assessing debt capacity, and valuing businesses. But it is not a complete measure of financial health or a precise indicator of cash generation.

The most effective business owners focus not only on measuring EBITDA, but also on turning it into sustainable free cash flow over time. EBITDA is not the enemy – it is simply incomplete. Used properly, it is a helpful tool; used alone, it can lead to suboptimal and sometimes costly decisions.