Mergers and acquisitions are how companies buy, sell and combine with one another, and it is the work most people picture when they picture investment banking. This deck starts with the plain-language version, what a merger actually is, why anyone would pay above market price, and what a bank does on the sell-side versus the buy-side, then builds toward the mechanics interviewers push on: consideration, synergies, accretion and dilution, goodwill, and where a premium has to be earned back. You have already met valuation and the financial statements, so the focus here is deals themselves. No deal experience assumed.
16 cardsInvestment bankingFree, no signup
Card 1 of 16
What is the difference between a merger and an acquisition, and why do bankers lump them together as one thing?
A merger combines two companies into one, an acquisition is one company buying and absorbing another.
In an acquisition, one company, the acquirer, buys control of another, the target, and the target stops existing as an independent business. A merger is the friendlier-sounding version, where two companies combine, sometimes under a new name, and the shareholders of both end up owning a piece of the combined company. In practice the line is blurry, which is why bankers use M&A as a single umbrella term: almost every deal announced as a merger of equals still has a side that pays a premium and a side that collects it.
Card 2 of 16
Your MD is prepping a pitch for Northbay Logistics and asks you to lay out why a company would buy another company at all. What is actually on that list?
Acquirers buy to get scale, capability, market access, or earnings faster than they could build them.
Almost every acquisition comes down to buying something faster than you could build it. That might be scale, where the combined company spreads the same head office and factory costs over more revenue, or capability, where the target owns technology or a team the buyer would need years to develop. It might be market access, buying a foothold in a region or a customer segment, or diversification into steadier earnings. Less flattering motives exist too, including a chief executive who simply wants a bigger company to run, and naming that one is often what an interviewer is listening for.
Card 3 of 16
What do bankers mean by sell-side and buy-side on an M&A deal, and what is the bank actually doing in each?
Sell-side means running a process to sell a company, buy-side means helping a buyer find and buy one.
On a sell-side mandate the bank works for the company being sold, or its owners, and runs the process: setting the price expectation, preparing the marketing materials, deciding which buyers get approached, and squeezing the best terms out of whoever is still standing at the end. On a buy-side mandate the bank works for the acquirer, helping it identify targets, value them, structure and finance a bid, and negotiate. Sell-side fees are usually a percentage of deal value paid at closing, which is why banks compete hard for those mandates.
Card 4 of 16
Calder Foods shares trade at $40 and its board has just agreed to be bought at $52. Why would any acquirer pay well above a price anyone could buy the stock at this morning?
A control premium is the extra an acquirer pays to own and run the whole company rather than a slice of it.
The control premium is the amount paid above where the shares traded before news of a deal moved the price, and it commonly lands somewhere in the twenty to forty percent range, though it varies a lot by sector and situation. Buying one share gets you a passive slice; buying the whole company gets you the right to redirect its cash, replace its management, and combine it with your own operations. Shareholders also have no reason to sell at the market price, since they can get that any day of the week, so the premium is the price of persuading them to let go.
Card 5 of 16
A potential buyer for Northbay Logistics calls and asks your team to send over “the book.” What are a teaser, an NDA and a CIM, and why do they arrive in that order?
The teaser is anonymous bait, the NDA buys silence, and the CIM is the full book on the business.
The teaser is a one or two page anonymous summary, a description and a few financials with the company’s name stripped out, sent broadly to see who bites. A buyer that wants more signs a non-disclosure agreement, a contract promising not to share what it learns or use it against the seller. Only then does it receive the confidential information memorandum, the fifty to hundred page book covering the business, its market, its customers and its numbers, which is what a first-round bid actually gets based on.
Card 6 of 16
Your staffer wants you to be able to describe a live sell-side deal to a client tomorrow. Walk me through an M&A process from the first pitch through to closing.
A sale runs pitch, marketing, first bids, diligence, final bids, signing, and only then closing.
It starts with banks pitching for the mandate and one being hired. The team prepares the teaser and the CIM, approaches buyers, and collects non-binding first-round bids. A shorter list then gets management presentations and access to the data room, the online archive where the seller’s contracts, financials and legal files sit for diligence, before submitting binding bids. The winner negotiates the purchase agreement and signs it. Closing, when the money and the ownership actually move, comes weeks or months later, once regulators and shareholders have given their approvals.
Card 7 of 16
Ferrow Retail has agreed to buy Calder Foods and can pay in cash, in its own shares, or a blend of the two. What does each choice signal to the market?
Cash signals confidence, stock shares the risk and hints the buyer thinks its own shares are pricey.
Cash is simple: the seller’s shareholders receive a fixed amount and walk away, so every bit of the risk that the deal disappoints sits with the buyer. Stock means they receive shares in the combined company, keeping some of the upside but also carrying part of the downside, and their real proceeds move with the buyer’s share price until closing. The market usually reads cash as confidence and stock as a hint that the buyer thinks its own shares are richly valued, which is one reason an acquirer’s stock often falls on the announcement of a large all-stock deal.
Card 8 of 16
At a basic level, what is the difference between buying a company’s assets and buying its stock, and why do buyers and sellers usually want different ones?
An asset deal lets a buyer pick what it takes, a stock deal takes the whole company, liabilities included.
In a stock purchase the buyer acquires the target’s shares, so it gets the company exactly as it stands, every contract, every employee and every liability, including the ones nobody has found yet. In an asset purchase the buyer names the specific assets and liabilities it wants and leaves the rest behind in a shell the seller still owns. Buyers tend to prefer asset deals, since they sidestep unknown liabilities and often get to write assets up for tax purposes, while sellers prefer stock deals for the clean exit and generally better tax treatment. The details turn on local tax law, so lawyers drive that call.
Card 9 of 16
Your VP says the model needs $80 million of synergies to justify the price on Calder Foods. What are synergies, and why will the board believe the cost ones more than the revenue ones?
Cost synergies are savings the buyer controls, revenue synergies depend on customers behaving as hoped.
Synergies are the value that only exists once two companies are combined. Cost synergies are expenses that disappear, one head office instead of two, one finance team, better purchasing terms from suppliers, and a buyer can usually name the specific line items and when they land. Revenue synergies are extra sales, selling the target’s product to your customers or the reverse, and they depend on customers choosing to behave as hoped rather than on decisions the buyer controls. Boards and analysts routinely haircut or ignore the revenue number for exactly that reason.
Card 10 of 16
The first question a CFO asks about any deal is whether it is accretive. What do accretion and dilution actually mean, and why does that question come before everything else?
A deal is accretive if the buyer’s earnings per share end up higher after it than they would be alone.
Earnings per share is net income divided by shares outstanding. In a deal, the buyer adds the target’s earnings and any synergies, subtracts the cost of paying for it, meaning interest on new debt or the interest given up on cash spent, then divides by a share count that grows if part of the price is paid in stock. If that figure beats what the buyer would have earned per share standing alone, the deal is accretive, and if it falls short, dilutive. It is a crude test that says nothing about whether the price was sensible, but it is the number the market reacts to first.
Card 11 of 16
Your VP gives you only the two P/E ratios and asks whether an all-stock deal will be accretive before you open Excel. What is the rule of thumb, and why does it work?
In an all-stock deal, a buyer with a higher P/E than the price it pays for the target is usually accretive.
In an all-stock deal the buyer is paying with its own shares, so the question is whether the earnings it buys are cheaper than the earnings it gives up. A price-to-earnings ratio is what investors pay for a dollar of profit, so a buyer trading at twenty times earnings that acquires a target at fourteen times is buying profit more cheaply than the market prices its own, and earnings per share rises. The rule only holds if you use the P/E implied by the offer price rather than the target’s trading price, and it ignores synergies, so treat it as a first read rather than an answer.
Card 12 of 16
Where does goodwill come from in an acquisition, and what is purchase price allocation actually doing?
Goodwill is whatever is left of the price once the target’s identified assets are marked to fair value.
When a deal closes, the buyer cannot simply carry the target’s old balance sheet forward. Purchase price allocation restates the target’s assets and liabilities at fair value, which usually means writing property up and recognizing intangibles the target never booked itself, such as brand names and customer relationships. Whatever the purchase price exceeds that fair value of net identifiable assets becomes goodwill, an asset standing in for everything paid that cannot be pointed at directly. Under US accounting it is not amortized but tested for impairment, and a goodwill writedown is about as close as a company comes to publicly admitting it overpaid.
Card 13 of 16
Calder Foods’ board has now rejected Ferrow’s offer twice, and Ferrow is considering going straight to the shareholders. What makes a deal hostile, and what can a board actually do about it?
A deal is hostile when the acquirer goes around a board that said no and appeals to shareholders directly.
A friendly deal is negotiated with the target’s board, which then recommends it to shareholders. A deal turns hostile when the board refuses and the acquirer goes around it, either with a tender offer, an approach made directly to shareholders to buy their shares, or a proxy fight to replace the directors with ones who will agree. Boards can respond with a poison pill, a plan letting every other shareholder buy cheap new stock the moment a bidder crosses an ownership threshold, or by finding a friendlier rival bidder. Hostile attempts are a small minority of deals, and most that succeed end up negotiated anyway.
Card 14 of 16
Two of the three largest players in a market announce they are combining. What does the regulatory review look for, and what can it actually do to the deal?
Regulators ask whether the combined company could raise prices, not whether the deal is a good idea.
Before a deal can close, competition authorities examine whether the combined company would meaningfully weaken competition in any market it touches. They look at how concentrated the market becomes, how closely the two companies actually compete for the same customers, and how easily a new entrant could appear to discipline prices. The outcomes are a clean approval, an approval conditional on remedies such as selling an overlapping business to a third party, or a challenge that kills the deal outright. Big deals often need clearance in several countries at once, which is much of why signing and closing sit months apart.
Card 15 of 16
Interviewers like to say most acquisitions destroy value. Is that actually true, and how would you answer without just agreeing with them?
Acquirers frequently overpay, so the average deal disappoints, but the spread across deals is very wide.
The evidence is more specific than the slogan. Studies of share price reactions around announcements consistently find that target shareholders capture most of the gain, because the premium is handed to them on day one, while acquirer shareholders on average earn close to nothing and often slightly less, particularly in large stock-funded deals. Averages hide a wide spread, though: smaller cash-funded purchases of adjacent businesses with concrete cost savings tend to do fine. The framing worth offering is that value transfers to the seller at signing, and the buyer only earns it back if the synergies actually arrive.
Card 16 of 16
Calder Foods trades at 8x EBITDA and Ferrow has agreed to pay 12x. Your MD asks where those extra four turns have to come from for the deal to make any sense. What do you say?
A premium only pays off if synergies or structure earn back the turns paid above standalone value.
Standalone, the market says the business is worth eight times its EBITDA, so those four extra turns are a bet on something the market is not currently pricing. The honest sources are synergies, since savings raise combined EBITDA and pull the effective multiple back down, structure, meaning cheap debt or a tax step-up that lowers the real cost of the purchase, or a genuine view that the comparable companies are mispricing the asset. If Ferrow pays 12x on $100 million of EBITDA and delivers $40 million of savings, it has really paid about 8.6x, and that is the number your MD wants to hear.
Reading is not the same as remembering. Study this deck with scheduled review so the cards come back before you forget them.