EBITDA tells you if you sold well. Cash flow tells you if you collected. ROIC tells you if it was worth it.
The three measure different things. All three belong together in any serious capital allocation diagnostic. And most monthly reports we see in mid-market companies monitor only the first.
This isn’t gratuitous criticism. It’s the operating reality of most boards in family-owned companies: EBITDA is the metric the accounting system produces with the least friction, it’s what banks require for covenants, and it’s what owners use for year-over-year comparisons. It is also the metric that most easily masks value deterioration.
This article describes what each of the three measures, what it hides when viewed alone, and how they read together under the ROIC X-Ray lens.
EBITDA: if you sold well
EBITDA measures your operating model’s ability to generate profit before the effects of how you finance the business (interest), how much you pay the tax authority (taxes), and how you amortize historical investment (depreciation and amortization).
It’s a useful metric because it isolates the operation. If two companies in the same sector have different EBITDA, the difference is in pricing, production cost, operational efficiency, or product mix — not in how they structured their debt.
What EBITDA measures well:
- Whether your pricing absorbs input inflation
- Whether your product mix is improving or deteriorating
- Whether your cost structure scales with volume
What EBITDA does not measure:
- Whether your customers pay on time
- Whether your inventory is growing faster than sales
- Whether accounting depreciation is masking real maintenance capex
- Whether the invested capital required to generate that EBITDA is ballooning
A company can have EBITDA growing +15% year over year while burning cash. The reason: working capital growing faster than profit, combined with maintenance capex that’s deferred in the books but not in operational reality. The board sees growth. The cash drains.
Free cash flow: if you collected
Free cash flow answers the question EBITDA avoids: is that operating profit actually converting into real money?
The basic formula:
Free cash flow = EBITDA − ΔWorking capital − Capex − Taxes paid
Each of those terms can destroy cash flow without EBITDA changing.
ΔWorking capital. If your customers start paying at 90 days instead of 60, your accounts receivable grow. That growth is cash flow that never came in. If your inventory rises — because you forecasted higher demand or because turnover decelerated — that inventory is cash immobilized in the warehouse.
Capex. Accounting depreciation rarely matches actual cash outlay. A company that defers maintenance for several years can show growing EBITDA, until the big reinvestment cycle hits and capex spikes. Depreciation in the P&L is a white lie; capex in the cash flow statement is the truth.
Taxes paid. Accounting estimates smooth the tax line in the P&L. The tax authority collects in cash.
When free cash flow consistently falls below EBITDA for several quarters, there’s a message. Which of the three components — working capital, capex, or taxes — is opening the gap is where the diagnostic begins.
ROIC: if it was worth it
ROIC synthesizes EBITDA and cash flow into a single question: for every dollar of capital invested in the business, how much return does it generate?
The formula:
ROIC = NOPAT / Invested capital
Where:
- NOPAT = Net operating profit after tax
- Invested capital = Working capital + Net fixed assets
ROIC measures capital efficiency. A company can have large EBITDA and healthy cash flow and still be destroying value — if the capital required to generate them yields less than the opportunity cost of that capital.
The relevant comparator is the weighted average cost of capital (WACC). If your ROIC exceeds your WACC, you’re creating value. If your ROIC is less than your WACC, you’re destroying value — regardless of whether EBITDA is growing.
This is the metric owners rarely see in their monthly reports and the only one that tells them whether their company, this year, added or subtracted economic value.
All three together: the capital allocator’s reading
None of the three metrics is sufficient alone. Each answers a different question and, read together, they paint the complete picture:
| Metric | Question it answers | Limitation when viewed alone |
|---|---|---|
| EBITDA | Did I sell well? | Doesn’t measure collections, working capital, or capital efficiency |
| Free cash flow | Did I collect? | Doesn’t say whether the invested capital was the right amount |
| ROIC | Was it worth it? | It’s a synthesis metric; needs decomposition for diagnosis |
In ROIC X-Ray we start by decomposing ROIC into its two structural levers:
Lever A — Operating margin. The profitability per dollar of revenue. This is the dimension EBITDA partially illuminates. The complete decomposition covers pricing, sales, procurement, production, distribution, after-sales, overhead, and portfolio complexity.
Lever B — Capital turnover. The speed at which invested capital produces revenue. This is the dimension cash flow partially illuminates. The decomposition covers working capital (accounts receivable, inventory, accounts payable) and capex (asset utilization and investment decisions).
ROIC = Margin × Turnover
This decomposition — the DuPont formula — is the first cut in any serious diagnostic. It tells you whether your problem is how you sell (Lever A) or how you deploy capital (Lever B). The solutions are different in each case.
Implications for the board
If your board’s monthly report only shows EBITDA, it’s incomplete. Three minimum adjustments:
1. Real free cash flow, not a proxy. EBITDA minus change in working capital minus capex paid minus taxes paid. Monthly, compared against EBITDA for the same month. A sustained gap between the two is the first flag.
2. Trailing 12-month ROIC, compared against estimated cost of capital. It doesn’t have to be precise to the decimal — a defensible range is enough. The question is whether you’re above or below the threshold, not whether your ROIC is 14.2% or 14.5%.
3. Month-by-month DuPont decomposition. Operating margin and capital turnover, separated. A drop in ROIC always comes from one of the two. Knowing which one is the first step to knowing what to do.
Three metrics. Three questions. Three lenses that any capital allocator puts on every month — because without all three, there’s no way to know whether your company is creating or destroying value.