What's the difference between enterprise value and equity value?

This is the question interviewers use to find out, in about ninety seconds, whether you actually understand valuation or have only memorised multiples. It sounds like a definitions question. It isn't. Almost every follow-up in a technical interview — why EV/EBITDA and not P/EBITDA, what happens if the company raises debt, why you subtract cash — hangs off whether you got this one right.

The core idea is a single sentence: equity value is what the shareholders own, enterprise value is what the business is worth to everyone who funded it. Everything else is bookkeeping around that sentence.

Start with the two definitions, in plain language.

Equity value (market capitalisation) is the value of the company available to common shareholders: fully diluted shares outstanding × current share price.

Enterprise value is the value of the core operating business, regardless of how it was financed. It's what a buyer would effectively pay to own the operations outright.

Then give the bridge, in order.

Enterprise value = equity value + total debt + preferred stock + non-controlling interests − cash and cash equivalents

Then explain why each line is there — this is the part that separates candidates:

• Add debt. Buy the equity of a levered company and you inherit its obligations, so debt is part of what you're really paying.
• Add preferred stock and non-controlling interests. Both are claims on the business held by someone other than common shareholders. NCI is added because the consolidated financials already include 100% of a subsidiary you only partly own.
• Subtract cash. Cash isn't an operating asset. Buy the company and you get the cash back, so it reduces the effective price.

Close with why anyone cares. Enterprise value is capital-structure neutral, so it pairs with metrics available to all capital providers: EV/EBITDA, EV/EBIT, EV/Revenue, and unlevered free cash flow in a DCF. Equity value pairs with metrics that sit after interest expense: P/E, price to book, levered free cash flow.

A worked number takes ten seconds and lands well. A company with 100 million diluted shares at $20 has $2.0bn of equity value. Add $500m of debt and subtract $100m of cash and enterprise value is $2.4bn.

The interviewer is checking three things.

Whether you understand seniority of claims. Equity is the residual — it's what's left after everyone else is paid. If your answer treats the two figures as interchangeable numbers with a formula between them, that's a red flag on everything that follows.

Whether you can pair metrics correctly. The most common live test is simply asking "so why do we use EV/EBITDA rather than P/EBITDA?" The answer is consistency: EBITDA is pre-interest, so it belongs to debt and equity holders alike, and pairing it with equity value alone mismatches numerator and denominator.

Whether you can reason, not just recite. Expect at least one perturbation: what happens to each figure if the company issues $200m of debt, or pays down debt with cash, or issues stock? These are asked precisely because the formula alone won't get you there. Issuing debt raises debt and cash by the same amount, so enterprise value is unchanged — and candidates who memorised the bridge without understanding it get this wrong roughly half the time.