What Is EBITDA? Formula, Example, and Why It Isn't Cash Flow

What EBITDA means in plain English

EBITDA stands for earnings before interest, taxes, depreciation and amortization. It is a measure of operating profit: how much a business earns from running its core operations, before financing choices (interest), tax jurisdiction (taxes), and accounting write-downs of past purchases (depreciation and amortization) are layered on top.

The point of stripping those four items out is comparability. Two companies with identical operations can report very different net income simply because one is funded by debt, sits in a different tax regime, or bought its equipment in a different year. EBITDA lets you ask the cleaner question: does the underlying business make money from selling its product?

For a startup, that question is usually answered "not yet" for a long time, which is exactly why the moment EBITDA turns positive is treated as a milestone. It means the operating engine — revenue minus the cost of delivering and running the product — has started to pay for itself.

The EBITDA formula, with a worked example

There are two equivalent ways to calculate it. From the top of the income statement: EBITDA = Revenue − Cost of goods sold − Operating expenses (excluding depreciation and amortization). From the bottom: EBITDA = Net income + Interest + Taxes + Depreciation + Amortization. Both land on the same number if the books are consistent, so use whichever direction your accounting tool makes easier.

Take a small SaaS company in one month. Revenue is $80,000, hosting and support (cost of goods sold) is $20,000, payroll is $40,000, and other operating costs — software, marketing, rent — are $10,000. Operating expenses total $50,000 on top of the $20,000 COGS, so EBITDA is $80,000 − $20,000 − $50,000 = $10,000. Divide by revenue and the EBITDA margin is 12.5%.

Check it from the bottom to be sure. If that month also carries $3,000 of depreciation and amortization, $1,000 of loan interest and $1,000 of tax, net income is $5,000. Add back $3,000 + $1,000 + $1,000 and you are at $10,000 again. The formula is only bookkeeping, but it is worth doing once by hand so the line items stop feeling abstract.

Why founders and investors track EBITDA

EBITDA gives a fast read on operating leverage. If revenue grows 30% and EBITDA margin climbs from −40% to −10%, the cost base is scaling slower than the business, which is what investors mean when they say a company is "growing into its costs." Margin trends often tell a clearer story than the absolute number.

It also shows up in the second half of a company's life. Acquirers and lenders commonly quote valuations and debt capacity as multiples of EBITDA, because it approximates the recurring operating earnings a buyer would inherit. Early-stage startups are usually valued on revenue growth instead, since EBITDA is negative, but the metric becomes the language of the conversation once the company is mature enough to be profitable.

For the founder, the more practical use is as a target. "Reach EBITDA-positive" is a concrete operating goal that does not depend on raising another round, and it is closely related to the idea of being default alive: if current trends continue, the company reaches profitability before the cash runs out.

EBITDA vs. net income vs. cash flow

These three numbers get confused constantly, and the confusion is expensive. They answer different questions, and a company can look healthy on one while being in trouble on another.

How an EBITDA-positive company still runs out of cash

The most common gap is timing. EBITDA follows accrual accounting, so a signed annual contract can be recognized as revenue month by month while the invoice is still unpaid. A company that sells to slow-paying customers — enterprise buyers, or public-sector clients with long procurement and payment cycles — can show healthy EBITDA while the bank balance falls because cash arrives months after the work was done.

The second gap is everything EBITDA ignores by design. Debt repayments, interest, taxes, and capital expenditure are real cash leaving the account. If a startup capitalizes part of its engineering salaries as development assets, those costs can also move out of operating expenses and make EBITDA look better than the cash reality. A loan with a fixed monthly repayment can turn a modestly positive EBITDA into negative cash flow overnight.

The fix is simple and unglamorous: track both. Use EBITDA to judge whether the operating model works, and use monthly cash burn from your actual bank balances to judge how long you survive. If the two numbers tell different stories, the difference is usually receivables, capitalized costs, or debt service, and that is where to look first.

Adjusted EBITDA and other caveats

You will often see "adjusted EBITDA," which removes further items such as stock-based compensation, one-off legal costs, or restructuring charges. Some adjustments are reasonable, because a single non-recurring expense distorts the trend. Others are generous: stock-based compensation is a real cost of paying employees, just paid in equity instead of cash, and removing it flatters the result.

EBITDA also says nothing about how much a business must reinvest to stay competitive. A hardware or infrastructure-heavy company can post attractive EBITDA while spending most of it on equipment. Famously cautious investors treat it as a starting point and read free cash flow alongside it, because free cash flow includes the capital spending that EBITDA leaves out.

None of this makes EBITDA a bad metric. It makes it a partial one. Treat any single profitability number as one lens, and be especially skeptical when a company leads with the adjusted version without showing the unadjusted one.

The practical path to EBITDA-positive

There are only two levers: raise gross profit or lower operating costs. On the gross profit side, that means improving gross margin through pricing, cheaper delivery, and lower hosting or support cost per customer, and protecting recurring revenue by keeping churn low. On the cost side, it means being deliberate about hiring and treating every new role as a runway decision rather than a growth reflex.

Sequence matters. Cutting costs before the product has retention just shrinks the company, while chasing growth before unit economics work widens the loss with every customer. The healthiest pattern is usually to confirm that each customer is profitable at the unit level, then add volume, and only then expect operating leverage to push EBITDA toward zero and above.

It is also fine to decide that EBITDA-positive is not your goal yet. A company funded to invest in growth can rationally run negative for years. What matters is making that choice on purpose, knowing how many months the cash lasts, and having a believable path to either profitability or the next round.

How EBITDA shows up in Founder Runway

In Founder Runway, a 20-turn run ends in one of four outcomes: failure, promising but not there yet, EBITDA positive, or high-value exit potential. EBITDA positive is the outcome for a company that managed to pay for itself, which is why the decisions that lead there look like the ones in this article: protect margin, protect retention, and treat burn as something you choose each turn.

Each turn presents four options, you pick a business model (B2B, B2C or B2G) and a starting stage (Pre-Seed, Seed, Pre-Series A or Series A), and the board shows how cash, burn and runway respond. Playing for EBITDA positive is a good way to feel the trade-off between growth spend and operating discipline without risking a real payroll.

If you want the full picture of how that ending compares with the exit-oriented one, our breakdown of EBITDA-positive vs. high-value exit walks through both. The game is a learning tool, not financial advice, and the metrics in it are simplified models of real accounting concepts.