EBITDA stands for Earnings Before Interest, Taxes, Depreciation, and Amortization. It is a proxy for the operating cash earnings of a business before its capital structure and tax position, which is exactly what makes it the standard basis for comparing companies and for setting purchase prices. Start with operating income and add back depreciation and amortization, or start with net income and add back interest, taxes, depreciation, and amortization. Either path lands in the same place.
Why it matters
Middle-market deals are priced as a multiple of EBITDA, and LBO leverage is sized in turns of EBITDA (Net Debt / EBITDA). It is the single most important number in the entry valuation, so how it is defined and adjusted drives everything downstream: the price, the debt the deal can carry, and every return metric the model produces. Two businesses with identical EBITDA can be financed and taxed completely differently, and EBITDA lets a buyer look past that to the underlying earning power.
From EBITDA to enterprise value
Our case-study distributor has $25M of EBITDA. At a 6.0x multiple, that supports a $150M enterprise value. One additional turn of leverage means roughly $25M of extra debt capacity. Move EBITDA by $1M and, at 6.0x, the purchase price moves by $6M. That leverage on price is why so much diligence energy goes into pinning down the real EBITDA number.
EBITDA is not cash flow
The most common mistake is treating EBITDA as the cash a business throws off. It ignores capital expenditures, the cash absorbed by a growing balance sheet, cash interest, and cash taxes. A capital-intensive or fast-growing business can show strong EBITDA and still generate little free cash flow to pay down debt. In an LBO, free cash flow is what services the debt, so a buyer underwrites both the EBITDA that sets the price and the free cash flow that has to carry the capital structure.
Reported vs. adjusted
The EBITDA a deal actually prices on is almost never the raw reported figure. Sellers present Adjusted EBITDA: reported earnings plus add-backs for one-time costs, above-market owner compensation, and pro forma effects. Those add-backs get tested in a Quality of Earnings review, and what survives is the number that anchors the price.