15 Enterprise Value Trap Questions That Trip Up IB Candidates (With Answers)

Enterprise value questions look easy. That's exactly why interviewers love them.

You've memorized the formula, you nod confidently, and then the interviewer asks, "So what happens to EV if the company raises debt?" Suddenly you're second-guessing everything. This post walks through 15 EV trap questions you're likely to face, why each one is a trap, and how to answer cleanly, with numbers.

Quick Refresher: The EV Formula

Before the traps, here's the version of the formula you should have locked in:

Enterprise Value = Equity Value + Debt + Preferred Stock + Noncontrolling Interest − Cash and Equivalents

Some practitioners also subtract other non-operating assets, like equity investments in other companies. Keep that in mind, because it shows up in one of the traps below.

The big idea: EV measures the value of the core operating business, available to all capital providers. Equity value is only the slice that belongs to common shareholders.

Our Example Company

We'll use one simple company for most of the math:

• Equity value: $1,000
• Debt: $400
• Cash: $100
• Enterprise value: $1,000 + $400 − $100 = $1,300

Assume no fees and no taxes unless stated otherwise.

Part 1: Capital Structure Changes

These are the most common traps. The pattern to remember: moving money between financing sources and cash usually doesn't change EV.

1. The company raises $100 of debt and keeps the cash. What happens to EV?

Nothing. Debt goes up by $100, but cash also goes up by $100, so the two cancel out.

• New EV: $1,000 + $500 − $200 = $1,300

The trap is thinking "more debt means higher EV." Debt only raises EV if the money is spent on something that isn't cash.

2. The company issues $100 of new shares for cash. What happens to EV and equity value?

Equity value rises by $100. EV stays the same.

• New equity value: $1,100
• New EV: $1,100 + $400 − $200 = $1,300

Shareholders now own a company with $100 more cash in it, so their stake is worth more. The operating business hasn't changed, though.

3. The company uses $100 of cash to pay down debt. What happens to EV?

Still nothing. Cash drops by $100 and debt drops by $100.

• New EV: $1,000 + $300 − $0 = $1,300

Interviewers sometimes ask this right after Question 1 to see if you'll overthink it. You won't.

4. The company pays a $50 dividend. What happens to EV?

EV is unchanged. Equity value falls by $50, at least in theory.

• Cash falls to $50
• Equity value falls to $950, since $50 of value just left the company and went to shareholders
• New EV: $950 + $400 − $50 = $1,300

The trap here is saying equity value stays the same. The company is literally handing value out the door, so the equity is worth less afterward.

5. The company spends $100 buying back its own shares. What happens?

Same logic as the dividend. Equity value drops by $100, cash drops by $100, and EV stays at $1,300.

A buyback and a dividend are just two ways of returning cash to shareholders. Their effect on EV is identical.

Part 2: When EV Actually Moves

6. The company borrows $300 to acquire another business for $300. What happens to EV?

EV goes up by $300. This is the one that catches people who memorized "debt changes don't affect EV."

• Debt rises to $700
• Cash doesn't change, because the borrowed money was spent on the acquisition
• Equity value stays at $1,000, assuming the company paid a fair price
• New EV: $1,000 + $700 − $100 = $1,600

The key difference: the cash was converted into operating assets. EV measures operating assets, so EV grows. You'd get the same $300 increase if the company paid with $300 of its own cash instead.

Rule of thumb: EV changes when the company gains or loses operating assets. It doesn't change when the company just reshuffles how it's financed.

Part 3: Weird Numbers

7. Can enterprise value be negative?

Yes. It happens when a company holds more cash than its equity value plus debt (and other claims).

Example: a company with a $200 market cap, $0 debt, and $300 of cash has an EV of −$100.

This usually means the market is deeply pessimistic about the business. Investors might expect the company to burn through its cash, or they don't trust management to use it well. You'll often see it with struggling small caps or companies in wind-down mode.

8. Can equity value be negative?

Depends which equity value you mean. This is the trap.

• Market equity value (market cap): No. A share price can't go below zero, so market cap can't either.
• Book equity (shareholders' equity on the balance sheet): Yes. Years of losses or large buybacks can push it negative. Plenty of profitable, well-known companies have negative book equity because of aggressive buybacks.

Always clarify "market or book?" if the question is ambiguous. That alone signals you know the difference.

Part 4: Why the Formula Looks the Way It Does

9. Why do we subtract cash?

The weak answer: "Because the buyer gets the cash." That's not wrong, but it's incomplete.

The stronger answer: cash is a non-operating asset. EV is meant to capture the value of the core business, and cash sitting in the bank isn't part of operations. Subtracting it isolates what the operating business is worth.

Bonus point: some analysts only subtract excess cash, keeping a minimum amount the business needs to run day to day. Mentioning this shows real-world awareness.

10. Why do we add noncontrolling interest, and why might we subtract equity investments?

It's all about matching the numerator and denominator of your multiples.

• Noncontrolling interest: If a company owns, say, 70% of a subsidiary, it still consolidates 100% of that subsidiary's revenue and EBITDA. To keep EV/EBITDA consistent, EV must include the value of the 30% it doesn't own. So you add NCI.
• Equity investments: If the company owns 25% of another business, it typically doesn't consolidate that business's EBITDA. Its value isn't reflected in the denominator, so you subtract it from EV to keep things consistent.

Same principle, opposite direction. If you explain it as "consistency," you've nailed it.

11. Is EV/Net Income a valid multiple?

No. This is a mismatch trap.

• EV pairs with metrics available to all capital providers, before interest: revenue, EBITDA, EBIT, unlevered free cash flow.
• Equity value pairs with metrics available only to shareholders, after interest: net income, EPS, levered free cash flow.

Net income is after interest payments to lenders, so pairing it with EV (which includes lenders) mixes two different groups. Same problem with "Price/EBITDA." Swap the pieces and you get the correct pairs: EV/EBITDA and P/E.

12. Two companies are identical except one has much more debt. Which has the higher EV?

In theory, they have the same EV. The operating businesses are identical, so the value of operations should be identical. The more levered company just has a smaller equity value, because more of the pie belongs to lenders.

In practice, it's more nuanced. Debt creates an interest tax shield, which can add value, and too much debt raises the risk of financial distress, which can destroy value. Mentioning both shows you understand that capital structure isn't totally irrelevant in the real world.

Why this matters: it's why EV/EBITDA is useful for comparing companies with different leverage, while P/E can be distorted by capital structure.

Part 5: Dilution and Hybrid Securities

13. Should you include out-of-the-money options when calculating diluted equity value?

No. Only in-the-money options get counted, using the treasury stock method.

Here's a worked example:

• Share price: $20
• Basic shares: 100
• Options: 10 at a $10 strike (in the money), plus 10 at a $30 strike (out of the money)

Treasury stock method on the in-the-money options:

1. Exercising 10 options brings in 10 × $10 = $100
2. The company uses that $100 to buy back shares at $20, so it repurchases 5 shares
3. Net new shares: 10 − 5 = 5

The $30-strike options are ignored, since no one would exercise an option to pay $30 for a $20 stock.

• Diluted shares: 105
• Diluted equity value: 105 × $20 = $2,100

The trap is either counting all the options or forgetting to net out the buyback.

14. How do you treat convertible bonds in EV?

It depends on whether they're in the money. And you must never count them twice.

Say a company has a $100 convertible bond that converts into 5 shares, which means a $20 conversion price.

• Share price is $25 (in the money): treat the bond as converted. Add 5 shares to the diluted share count and remove the $100 from debt.
• Share price is $15 (out of the money): bondholders would rather keep the bond. Leave it as $100 of debt and add no shares.

The classic mistake is adding the new shares and leaving the $100 in debt. That double counts the same claim.

15. Should lease liabilities be included in EV?

It depends on the accounting standard, and the logic, once again, is consistency with EBITDA.

• Under IFRS 16: most leases are capitalized, and the lease cost shows up as depreciation and interest, which sit below EBITDA. Since EBITDA excludes lease costs, you add lease liabilities to EV so both sides match.
• Under US GAAP (ASC 842): operating leases go on the balance sheet, but the lease expense still runs through operating expenses, so it's already deducted in EBITDA. Since EBITDA already reflects the lease cost, you typically don't add operating lease liabilities to EV.

This one separates candidates who memorized a formula from those who understand why the formula works.

Your EV Trap Cheat Sheet

When a question feels tricky, run through these checks:

• Did cash just move to or from a financing source? EV likely doesn't change.
• Did the company gain or lose operating assets? EV likely changes.
• Did value leave the company, like a dividend or buyback? Equity value drops, EV stays.
• Does my multiple match? EV with unlevered metrics, equity value with levered metrics.
• Am I being consistent? Whatever's in the denominator should be reflected in the numerator.
• Am I double counting? Especially with convertibles.

Final Tip: Talk Through the Mechanics

On every one of these questions, don't just blurt "EV doesn't change." Walk the interviewer through what happens to cash, debt, and equity value, then land on your answer.

Even if you stumble on the final number, clear reasoning earns a lot of credit. And when you do get it right, the walkthrough proves it wasn't a lucky guess.

Practice these out loud until the logic feels automatic. Once it clicks, EV questions go from traps to easy points.