Accretion Dilution Interview Questions: M&A EPS Logic Under Pressure

Ask a candidate whether a deal is accretive or dilutive and most will confidently say "accretive is good, dilutive is bad" and stop there. Then the interviewer changes the financing from stock to debt, or asks why a sensible CEO would ever pursue a deal that dilutes EPS on day one, and the confident answer collapses because there was never any real logic underneath it. That collapse is the entire point of the question. Interviewers are not testing whether you memorised a rule; they are testing whether you understand why the rule exists and when it stops applying.

The fix is first-principles prep, not more flashcards. Every input in your answer needs a one-sentence justification you could defend under follow-up. If you cannot explain why a number moves the way it does, do not say it with confidence, because the interviewer will find the gap within one more question.

What accretion dilution interview questions actually test

Interviewers are not hiring a merger model monkey. They want to see whether you understand:

• How acquirer and target earnings combine in pro forma EPS
• How financing choice (cash, debt, stock) changes the outcome
• When synergies and purchase price allocation move the answer
• Why strategic buyers sometimes accept dilution
• When EPS accretion misleads on value creation

A strong candidate sounds like someone who has seen deal maths, even if the interview is verbal.

The verbal accretion dilution framework (five steps)

Use this sequence for most "is this deal accretive?" prompts:

1. Start with standalone acquirer EPS (earnings divided by shares)
2. Add target earnings attributable to acquirer (post-tax, post-synergies if stated)
3. Adjust for financing: new interest expense on debt, foregone interest on cash, or new shares issued
4. Adjust for deal-related items: amortisation of intangibles, transaction costs, integration costs (often directional only in interviews)
5. Divide by new share count and compare to standalone EPS

Say the steps cleanly before adding numbers. Interviewers often interrupt to test adaptability.

The quick P/E shortcut (and when it breaks)

A common interview shortcut for all-stock deals:

• If the acquirer's P/E is higher than the target's implied P/E (price paid divided by target earnings), the deal tends toward accretion
• If the acquirer's P/E is lower, it tends toward dilution

Why it works (intuition): the acquirer is "paying" with expensive currency (high P/E equity) to buy cheaper earnings, or vice versa.

When it breaks:

• Mixed cash and debt financing
• Synergies or integration costs material in year one
• One-time charges and purchase accounting adjustments
• Different tax rates or non-controlling interests

Always state: "Directionally, assuming all-stock and clean earnings, I would expect…"

Financing mix: how each source moves EPS

Verbal line that works: "Debt makes accretion more likely if the target's earnings yield exceeds the after-tax cost of debt, but leverage and integration risk rise."

Synergies, amortisation, and the traps

Interviewers often add: "Assume $50m of cost synergies" or "there is amortisation of acquired intangibles."

Handle directionally:

• Cost synergies (after tax) increase pro forma earnings, pushing toward accretion
• Revenue synergies are riskier; credible answers note execution risk
• Amortisation of intangibles is a non-cash charge but reduces reported EPS, pushing toward dilution
• Transaction and integration costs hit early-period EPS

Strong candidates separate headline EPS from economic value. A deal can be strategically right but temporarily dilutive.

Strategic vs financial buyer angles

Strategic buyer questions often include:

• Why pay a control premium?
• Why accept near-term dilution?
• What synergies justify the price?

Financial sponsor questions often pivot to:

• Returns (IRR, MOIC), not EPS
• Leverage capacity and debt paydown
• Exit multiple assumptions

If the conversation shifts to sponsors, bridge to our paper LBO interview guide. For purchase price and multiples context, use our valuation interview questions guide.

Worked verbal example (round numbers)

Prompt: "Acquirer earns $100m with 100m shares. Target earns $20m. Acquirer issues 20m new shares to buy the target. Accretive or dilutive?"

Strong answer shape:

1. Standalone EPS = $100m / 100m = $1.00
2. Pro forma earnings = $100m + $20m = $120m (ignore synergies unless stated)
3. New shares = 100m + 20m = 120m
4. Pro forma EPS = $120m / 120m = $1.00
5. Flat EPS in this setup (exchange ratio matters; if shares issued were fewer, accretive; more, dilutive)

Then offer a twist: "If we funded half with debt at 5% after-tax cost on $200m purchase price, interest might offset part of the target earnings…"

This shows you can adapt without a spreadsheet.

Mock accretion dilution interview prompts

Practise aloud with twists:

1. "All-cash deal financed with debt: what makes it accretive?"
2. "Why would a CEO announce a dilutive acquisition?"
3. "Synergies are $100m pre-tax: what else do you need before calling it accretive?"
4. "Acquirer P/E is 25x, target implied P/E is 15x, all-stock: directional answer?"
5. "When is EPS accretion a bad reason to do a deal?"

Twist handling: state assumption, give direction, name one risk that reverses the conclusion.

Linkage to accounting and valuation

Accretion dilution sits on top of three-statement fluency and valuation judgement. If linkage questions expose gaps, drill our three statement interview questions guide first.

For superday context on how M&A technicals appear alongside fit and commercial awareness, see our superday investment banking guide.

One-week accretion dilution prep plan

Common accretion dilution interview mistakes

Tie M&A technical prep to your live interviews

Accretion dilution depth varies by firm and division. Lazard M&A superday technicals differ from a markets first round. When you track applications by company, division, and stage, you can weight M&A drills appropriately.

Before your next M&A round, run three verbal accretion dilution drills with financing twists and review one live deal announcement directionally.

What to do after reading this

Prepping accretion dilution for live M&A interviews? Finbound is a free application tracker and study platform for finance recruiting. You add the banks and divisions you are applying to, and an advanced priority algorithm ranks the highest-impact technical prep from those applications so M&A drills for one superday are not ordered the same as a markets first round.

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Return to the investment banking technical interview questions guide for full technical coverage across accounting, valuation, and deals.