You already know Enterprise Value adjusts a company's price tag for its debt and cash — EV = Market Cap + Debt − Cash. EV/EBITDA pairs that adjusted price tag with an earnings number built the same way: EBITDA, or Earnings Before Interest, Taxes, Depreciation, and Amortization, strips a company's operating profit back to what it earned before financing decisions, tax situation, and non-cash accounting charges enter the picture. Put those two together and you get the single multiple professionals reach for first when comparing companies that don't share an identical capital structure — which, in practice, is almost always.
Here's the exact mechanism: interest expense sits between EBITDA and net income on the income statement, meaning it drags down net income (and therefore P/E) for a heavily indebted company without touching EBITDA at all. Picture two companies running an identical operating business, both generating $200 million of EBITDA. Company A has no debt. Company B carries $500 million of debt at 6% interest, costing it $30 million a year. That $30 million comes straight out of Company B's net income, making its P/E look worse than Company A's — even though the two operating businesses are performing identically. EV/EBITDA doesn't have this problem: EBITDA is the same $200 million for both, and EV — which already includes each company's debt — does the adjusting instead, on the price side rather than the earnings side.
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