M And A Accretion Explained Clearly

Reviewed by Fallon Han· Updated 2026-06-01 21:30:02.153

This conversation was generated using Cook'd AI's career assistant and reviewed by Fallon Han from our editorial team for accuracy.

Can you walk me through an M&A example and show me where the deal can look better on paper than it really is? I'm especially confused about accretion and dilution, and I want the kind of answer I'd give in a middle-market boutique interview.

Absolutely. Let us use a simple acquisition example and then stress-test it, because that is exactly where candidates can show judgment in an interview. Assume BuyerCo has: - Shares outstanding: 100 million - Net income: 100 million pounds - EPS: 1.00 - Cash: 0 for simplicity TargetCo has: - Net income: 20 million pounds - Buyer is paying 10 times earnings, so purchase price is 200 million pounds Now suppose BuyerCo funds the deal with new debt at 5 percent interest. If there are no synergies, the key question is: does the target's earnings contribution exceed the after-tax cost of financing? If the target contributes 20 million pounds pre-tax and the new debt costs 10 million pounds pre-tax, the deal can look accretive before tax. But after tax, and after considering purchase accounting effects, the answer can change. In an interview, I would say this: - Accretion means post-deal EPS rises - Dilution means post-deal EPS falls - But EPS alone is not value creation A deal can be accretive because of cheap debt, aggressive synergy assumptions, or a low purchase multiple, even if the buyer overpays economically. That is the trap.

That makes sense, but can you show me the actual merger math with a simple EPS calculation? I want to understand what drives the accretion or dilution line by line.

Sure. Let us keep it deliberately simple. Starting point: - Buyer net income: 100 million pounds - Buyer shares: 100 million - Buyer EPS: 1.00 Target: - Net income: 20 million pounds Purchase price: 200 million pounds Funding: all debt at 5 percent Step 1: Estimate financing cost - Interest expense = 200 million x 5 percent = 10 million - Assume a 25 percent tax rate - After-tax interest cost = 10 million x 75 percent = 7.5 million Step 2: Add target earnings - Target contributes 20 million of net income Step 3: Combine and subtract financing cost - Combined net income = 100 + 20 - 7.5 = 112.5 million Step 4: EPS after deal - Shares stay at 100 million in this debt-funded example - EPS = 112.5 / 100 = 1.125 That is 12.5 percent accretion versus the original 1.00 EPS. But here is the important interview point: this is not the same as saying the acquisition creates value. If BuyerCo paid 10x earnings for a business earning 20 million, and its own stock or cost of capital implies a higher hurdle, the deal might be accretive but still destroy value. EPS accretion is a narrow accounting outcome, not a full economics test.

Where do synergies fit into that? I keep hearing that bankers can make almost any deal accretive with enough synergy assumption, so how do I explain why that is misleading?

Great question, and this is exactly the kind of nuance that impresses in a boutique interview. Synergies are the extra earnings the combined company expects to generate from the deal. They usually come from: - Cost synergies, like duplicate overhead savings - Revenue synergies, like cross-selling or better pricing Why they can mislead: 1. Timing risk - Synergies often take 12 to 24 months, but the financing cost starts immediately. 2. Execution risk - Cost synergies may require restructuring, system migration, or headcount cuts. - Revenue synergies are usually more uncertain and harder to underwrite. 3. Overlap with one-time benefits - Some savings are not durable. A banker may count them as permanent when they are really temporary. 4. Valuation circularity - A buyer may justify a higher price by assuming synergies, but those synergies are often shared with the seller in the purchase price. Using our example, if BuyerCo expects 8 million pounds of after-tax synergies, EPS rises further. But if the market already paid for those synergies through the acquisition premium, the buyer is just paying today for benefits it hopes to earn later. A strong interview answer would be: - Synergies can make a deal look accretive mechanically - But the real question is whether the synergies exceed the premium paid, the integration cost, and the risk-adjusted cost of capital

Can you give me a concrete example of how a deal looks accretive on paper but is actually bad economically? I want something I can talk through if they push me on trade-offs.

Yes. Let us build a simple trap case. BuyerCo: - Net income: 100 million pounds - Shares: 100 million - EPS: 1.00 TargetCo: - Net income: 20 million pounds Buyer pays 300 million pounds instead of 200 million pounds, because the target owner insists on a higher price. Buyer funds the deal with debt at 5 percent: - Interest expense = 15 million - After-tax interest = 11.25 million Now add an optimistic synergy assumption: - Expected after-tax synergies = 5 million Post-deal earnings become: - Buyer income: 100 - Plus target income: 20 - Plus synergies: 5 - Minus after-tax interest: 11.25 - Total = 113.75 million EPS = 1.1375 So the deal is accretive versus 1.00. But economically it may still be poor because: - Buyer paid 15 times earnings for a 20 million business - The synergy assumption may be uncertain or delayed - The extra 100 million premium above the original 200 million purchase price may not earn an adequate return If you want the interview-level punchline, say this: - Accretion can be bought with leverage or optimistic synergies - Value creation requires returns above the buyer's cost of capital on the entire premium paid

How would I say this in a real interview without sounding too textbook? I want a concise but sharp way to explain why EPS can be a bad guide.

You could say something like this: 'Accretion and dilution are useful first-pass screens, but they are not the same as value creation. A deal can be EPS accretive because the target earns more than the after-tax financing cost, or because management assumes synergies, but that does not mean the buyer is earning an attractive return on the premium paid. I would always want to look at the purchase multiple, the cost of capital, the timing and certainty of synergies, and whether the deal improves long-term ROIC.' If they press you, add: 'In other words, accretion can be engineered. Real value creation is harder because it depends on buying at the right price and actually delivering the synergies.' That answer sounds commercial, not formulaic, which is what a middle-market boutique will like.