FCF vs EBITDA: When Each Metric Matters and Why They Diverge

Definitions and formulas

Free Cash Flow is the cash a business generates after covering the cost of maintaining and growing its operations: FCF = Operating Cash Flow − Capital Expenditures. Both numbers live on the cash flow statement. FCF is real cash — it's what the company can actually deploy toward debt paydown, buybacks, dividends, or reinvestment. See our FCF deep-dive for full methodology.

EBITDA starts from the income statement: EBITDA = Net Income + Interest + Taxes + Depreciation + Amortization. By stripping out financing costs, tax jurisdictions, and non-cash D&A charges, it tries to isolate operating performance in a way that's comparable across companies with different capital structures. See our EBITDA explainer for the full context on when it misleads.

Neither metric is wrong. They answer different questions. The problem is when investors treat them as interchangeable — or when management teams lead with EBITDA precisely because it makes the business look better.

Side-by-side comparison

When EBITDA makes sense

Cross-company comparisons across capital structures. Private equity firms comparing leveraged buyout targets routinely use EBITDA because the target's current interest expense reflects who owns it today, not what the business is worth. A company carrying $800M in acquisition debt looks very different on a net income basis than an identical business that was never levered. Strip interest out and the operating comparison becomes apples-to-apples. EV/EBITDA became the standard M&A metric for exactly this reason — it values the enterprise independent of how it's capitalized.

Pre-profitability businesses where net income is negative. A SaaS company or biotech spending aggressively on sales and R&D will show negative net income during the scaling phase. EBITDA at least surfaces the operating leverage: how much revenue the business generates before growth investment and financing costs. It's not a perfect proxy for eventual cash generation, but it's a more useful starting point than a negative earnings number that conveys very little about the trajectory.

Debt capacity analysis. Lenders size leverage ratios against EBITDA because it approximates cash available for debt service before taxes and discretionary spending. A Debt/EBITDA covenant of 4x is shorthand for "your debt shouldn't exceed four years of operating earnings." The metric is imperfect — CapEx and working capital still matter for actual repayment — but it provides a consistent benchmark that's independent of accounting policy choices.

When FCF is more reliable

CapEx-heavy businesses. Airlines, utilities, and manufacturers spend enormous sums maintaining and replacing physical assets. An airline with $2B in EBITDA that spends $1.5B annually on fleet maintenance, hangar infrastructure, and aircraft replacements has almost nothing flowing to shareholders. EBITDA adds back depreciation as if the planes aren't wearing out. FCF subtracts the actual cash spent to keep them flying. The gap is not noise — it's the entire business model.

Working capital traps. A distributor that books revenue when product ships but collects cash 90 days later will show healthy EBITDA while quietly consuming cash. Mounting receivables don't appear in EBITDA. They show up as a negative working capital change in operating cash flow, which flows through to FCF. A company whose revenue is growing 15% while receivables grow 30% is extending credit faster than it's collecting — a pattern FCF catches immediately and EBITDA misses entirely.

Acquisition accounting. When a company acquires another business, it records intangible assets — customer relationships, developed technology, brand value — and then amortizes them over several years. That amortization is added back to reach EBITDA, even though it represents real economic value that was paid for in cash at closing. Heavy serial acquirers can carry billions in annual intangible amortization add-backs, making their adjusted EBITDA look significantly healthier than the underlying FCF actually generated.

The divergence signal

When EBITDA grows consistently but FCF stagnates or shrinks, the gap is a red flag — not proof of fraud, but a specific signal that demands investigation. Three mechanisms drive it most often:

CapEx surge. The company is capitalizing costs or doing heavy growth spending. WeWork is the extreme case: the company reported strong EBITDA-adjacent metrics throughout its growth phase while burning cash at a rate that eventually required a $47B valuation to be abandoned. The capital required to build out and furnish co-working locations never appeared in their headline operating metrics — only in the cash that kept disappearing from the balance sheet.

Working capital deterioration. Receivables expanding faster than revenue is the classic warning. A retailer extending generous credit terms to push volume will book the revenue and show EBITDA growth. The cash arrives later — or not at all. The working capital line in the operating section of the cash flow statement is where this shows up, and it's a line most investors skip.

Aggressive D&A add-back. Large goodwill and intangible amortization from acquisitions can create a persistent and growing gap between EBITDA and FCF. A media or technology company that has made a dozen acquisitions over five years may be adding back $500M+ in annual amortization — representing real cash that was spent acquiring those intangibles and is now being treated as if it never existed.

CTAs: apply the analysis