Deal Protection Explained: Break Fees, Go-Shop, Match Rights & the Fiduciary Out

Key takeaways

Deal protection is the bundle of contractual terms a buyer negotiates to defend an announced deal in the gap between signing and closing — a break fee, a no-shop, a match right, and the buyer-side mirror, a reverse termination fee. It exists because the target stays legally "in play" until the deal closes, and a higher bidder can still appear
The break fee — commonly around 3% of equity value in a US public deal — is not a penalty for bad behaviour. It is a discount the first bidder buys on every competing offer: a rival must now beat the price and cover the fee, so the original bidder has effectively taxed the topping bid
No board can truly promise not to look. The fiduciary out lets directors change their recommendation and accept a superior proposal despite a no-shop — and the match right is the buyer's answer, forcing a challenger to bid against an incumbent who sees its number and gets days to match it
This is largely an American toolkit. The UK Takeover Code banned break fees and most deal-protection measures in 2011 after the Kraft–Cadbury fallout, so a London take-private is defended by irrevocables and the scheme threshold, not by a contractual penalty. Knowing which side of the Atlantic you are on is the whole answer

The Signed Deal Is Not the Closed Deal

A merger agreement is signed and announced with fanfare, but nothing has changed hands. Months pass before closing — for antitrust clearance, a shareholder vote, regulatory consents — and through that whole interval the target is a public company whose board still owes its shareholders a duty to get the best price. A higher bidder who stayed quiet during the process can now read the terms in the announced agreement and decide to jump in.

Deal protection is the set of terms the first buyer negotiates to make that jump expensive and slow. It does not — and legally cannot — make a competing bid impossible. What it does is tilt the odds: raise the cost of topping the deal, deny a rival the information and access it would need, and buy the incumbent the right to respond before it loses. Every device below is a different lever on that same tilt.

The Break Fee: A Discount the First Bidder Buys on Every Rival's Offer

The break fee — termination fee in US documents, inducement fee in older UK ones — is a cash sum the target agrees to pay the buyer if the deal falls apart for specified reasons, the headline trigger being that the target walks to a superior proposal. In a US public-company deal it typically runs at roughly 3% of equity value, occasionally up toward 4% on smaller transactions, with expense reimbursement sometimes layered on top.

The instinct is to read it as a penalty for jilting the buyer. That misses what it does to the auction. A rival who wants the company must now pay enough to beat the agreed price and fund the break fee the target will hand the loser — so the first bidder has, in effect, written itself a discount on every competing offer. The fee is a tax on the topping bid, collected from the topping bidder.

What the break fee actually buys A 3% break fee on a £2bn equity deal is £60m. A rival is not deterred by £60m if the company is worth £300m more to it — so the fee does not lock anyone out of a genuinely better deal. What it does is shift the marginal cases: a bidder who would have paid a slim premium to win is now underwater on that same premium once the fee is added, and stands down. The break fee clears out the marginal toppers, not the serious ones — which is exactly why courts tolerate it at 3% and strike it down when it climbs to a level that would preclude any rival at all.

~3% The break fee on a typical US public M&A deal, as a share of equity value — large enough to deter a marginal topping bid, small enough that Delaware courts treat it as reasonable rather than preclusive. A fee pushed toward 6–7% on a strategic deal invites a challenge that it is coercive; the reverse termination fee a buyer pays runs higher precisely because it is not policing an auction

The break fee is the price of leaving; the next pair of terms governs whether the board is even allowed to go looking for someone to leave with.

No-Shop vs Go-Shop: Two Opposite Answers to the Same Question

Once a deal is signed, can the target solicit other buyers? The merger agreement answers that, and it answers it in one of two opposite ways. A no-shop bars the board from soliciting, encouraging, or even providing information to other bidders. A go-shop does the reverse: it carves out a defined window, often 30 to 50 days, in which the target may actively shop the deal to flush out a higher offer.

Feature	No-shop	Go-shop
Board may solicit rivals?	No — solicitation prohibited from signing	Yes — but only during the defined window
Typical user	Strategic deals; processes that already ran a full auction	Sponsor buyouts of public companies signed without a broad pre-signing auction
Break fee	Single fee (~3%)	Often a reduced fee for a bidder found inside the window, stepping up to the standard fee after
What it signals	The board believes the market was already canvassed	The board is buying a post-signing market check to defend the price

The go-shop exists mostly to solve a credibility problem for the board, not to find a buyer. A target that signs with a sponsor before running a wide auction is exposed to the charge that it never tested the market — so the go-shop lets it run that test after the fact, with a lower break fee during the window to make a topping bid genuinely viable. In practice topping bids inside a go-shop are rare; the more honest reading is that the window is often a procedural shield as much as a real auction. A board that pairs a go-shop with a high break fee and tight match rights has built a window that looks open and functions closed.

The Fiduciary Out: Why No Board Can Truly Promise Not to Look

A no-shop sounds absolute, but it never is — because a board cannot contract away its duty to shareholders. Under Delaware law, once a sale of control is in play the directors' job is to secure the best reasonably available price, and a promise to ignore a better offer that lands unbidden would breach that duty. Every no-shop therefore carries a fiduciary out: an exception that lets the board engage with, and ultimately accept, an unsolicited superior proposal.

The leverage sits in how "superior proposal" is defined. The merger agreement specifies what qualifies — usually an all-cash or fully-financed offer at a materially higher price, not subject to worse conditions — and the narrower that definition, the harder it is for a rival's bid to clear the bar that unlocks the out. The fiduciary out is the law's floor; the definition of what trips it is where the lawyers fight.

1. An unsolicited offer arrives. A rival, barred from being solicited, approaches the board directly with a higher price.

2. The board tests it against the definition. It can engage only if the offer is reasonably likely to be a "superior proposal" as the agreement defines it — price, certainty, financing, conditions all weighed.

3. The board notifies the original buyer. The no-shop's notice provision requires the target to tell the incumbent a superior proposal has emerged — and usually to hand over its terms.

4. The match-right clock starts. The incumbent gets a fixed window — commonly three to five business days — to revise its own offer so the rival's is no longer superior.

5. Match, or pay to switch. If the incumbent matches, the board's duty is satisfied by the improved deal and it stays. If it does not, the board changes its recommendation, the target terminates, and the break fee is paid to the loser.

Step four is where the protection does its quiet work — and it is worth pulling apart on its own.

The Match Right: Making the Challenger Bid Against an Informed Incumbent

A match right (or "right to match") gives the original buyer the contractual ability to revise its offer to meet a competing one before the board can switch. On paper it is a fairness mechanism — the incumbent gets a last look. In practice it changes the economics of bidding for everyone who comes after.

A rival contemplating a topping bid knows that whatever it offers will be shown to the incumbent, who then gets several days to match it. So the challenger is not bidding against a price; it is bidding against a counterparty who sees its number and can neutralise it. That asymmetry deters the challenge from being made at all — why incur the cost and exposure of a topping bid if the incumbent simply matches and keeps the company? The match right does not win auctions; it discourages them from starting.

How match rights chill a contest The danger is not a single match right but the stack. A short window plus a high break fee plus a tight superior-proposal definition plus an unlimited number of match rounds can combine into a structure that is, in substance, preclusive — no rational rival will ever top the deal. Delaware courts police exactly this: lock-up packages judged "draconian" or coercive in the round, after Omnicare, can be struck down even when each term looks reasonable alone. When you read a merger agreement, do not grade the break fee in isolation — grade the whole defensive package against whether any real bidder could ever get through it.

Reverse Termination Fees: When the Buyer Is the One Who Might Walk

Deal protection runs both ways. The terms above defend the buyer against the target straying; the reverse termination fee protects the target against the buyer failing to close. It is a sum the buyer pays the target if the deal dies for reasons on the buyer's side — most importantly, in a sponsor buyout, if the debt financing falls away.

Reverse fees in sponsor deals have historically run higher than ordinary break fees — often in the mid-single-digit percentages of equity value, sometimes 6% or more — and the reason is structural, not punitive. A leveraged buyer is buying an option: the right to walk if its financing collapses, capped at a known cost. The reverse fee is the premium on that option. Where a strategic buyer with cash on hand offers little or no reverse fee because it has no financing condition, a sponsor relying on a debt package — the same stack of tranches that funds the buyout — pays for the right to walk if that package does not materialise. A wide gap between the break fee and the reverse fee is a direct read on which side carries the closing risk.

The UK Took the Other Road: Rule 21.2 and the 2011 Ban

Everything above describes a primarily American architecture. Cross the Atlantic and most of it is simply illegal. After Kraft's contested 2010 takeover of Cadbury, the UK Takeover Panel concluded that deal-protection measures tilted the field toward the first bidder and against target shareholders — and in 2011 it banned break fees and most other deal-protection measures outright under what is now Rule 21.2 of the City Code.

So a UK take-private cannot lean on a contractual penalty to defend itself. The defences that remain are the ones the Code permits: the irrevocable undertakings a sponsor lines up before announcing, and the scheme-of-arrangement threshold that delivers 100% on a 75% vote. The contrast is the sharpest single fact in the topic — a Delaware deal is defended by a fee and a match right; a London deal is defended by locking up the vote in advance, because the Code took the fee away. There are narrow exceptions, chiefly where a target runs a formal sale process or a competing bid has already emerged, but the default is no break fee at all.

Interview framing Asked about deal protection, the tell of a strong answer is naming the jurisdiction first. In the US, walk through the package — break fee at ~3%, no-shop with a fiduciary out, a superior-proposal definition, a match right — and explain that together they tax and slow a topping bid without legally precluding it. Then draw the contrast: the UK Takeover Code banned break fees in 2011, so a London deal substitutes irrevocables and the scheme threshold for the contractual defences a US deal relies on. The reverse termination fee is the bonus point — flag that a sponsor pays a higher fee to the target for the option to walk if its debt financing fails. Moving from device, to purpose, to the transatlantic split is what separates a candidate who has read a merger agreement from one who has heard the phrase "break fee".

The Verdict: Protection That Tilts the Field Without Closing It

Deal protection is best understood as the first bidder buying a head start it is not otherwise entitled to. The signed deal does not close for months, the target stays in play, and the buyer uses the agreement to make any rival's life harder: the break fee taxes the topping bid, the no-shop denies a rival the board's help, the match right forces the challenger to bid against an informed incumbent, and the reverse fee prices the buyer's own option to walk. None of it forbids a better deal; all of it raises the cost of doing one.

That is also its limit, and the reason it is regulated. Push the package too far and it stops protecting a fair deal and starts precluding a better one — which is where Delaware's courts intervene and where the UK simply removed the central device. The judgement an interviewer is testing is not whether you can list the terms but whether you can see the tilt: who each clause favours, how far it goes before the law pushes back, and why the same deal is defended one way in New York and the opposite way in London.

Anyone can define a break fee — that is the headline. The judgement is seeing what the package does: a ~3% break fee taxes every rival bid, a no-shop carries a fiduciary out the board cannot waive, and a match right forces a challenger to bid against an incumbent who sees its number and gets days to match it. And the sharpest fact is jurisdictional: the UK banned break fees in 2011, so a London take-private is defended by irrevocables and the scheme threshold, while a US deal is defended by a fee and a match right. Read deal protection as a tilt of the field, not a wall — and always name which side of the Atlantic you are on.

Careers: An Associate Reads the Agreement for the Tilt

On a live deal the protection terms are not the model, but they shape what the model is allowed to assume. An associate marking up a competing situation needs to know whether a go-shop window is still open, what the superior-proposal bar is, and how many days the match right buys the incumbent — because those terms decide whether a higher number the team is contemplating can actually win, or merely triggers a match that keeps the company with someone else.

The skill is reading the defensive package as a system rather than a list. A break fee that looks standard can become preclusive once stacked with a tight definition and unlimited match rounds; a reverse fee that looks generous is just the price of a financing-out the buyer insisted on. An associate who can tell a partner "this looks toppable" or "this is locked up tighter than it reads" — and point to the clauses that make it so — is doing the part of the job the merger agreement created, the same way a take-private associate lives in the Code's timetable.

Take Your Preparation Further

Deal protection sits on top of the M&A process, so read it alongside the pieces that build the rest of it. Start with the M&A process from mandate to close for where signing and closing fall, and the UK Takeover Code for the jurisdiction that banned the fee and the defences that replaced it. For the auction tools a seller uses to keep its process tight, see stapled financing and vendor due diligence; for the financing whose collapse a reverse fee prices, the LBO debt stack; and for the exit context in which a board weighs competing bids, how private equity exits a deal. Then rehearse weaving it into a story with How to Answer 'Walk Me Through a Deal'.

For the full M&A process on one page — stages, parties, and the documents at each step — download our free M&A Process Cheat Sheet, and for the deal-process and negotiation questions in full, work through the PE Interview Masterclass.

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Deal Protection Explained: Break Fees, Go-Shop vs No-Shop, and the Match Right That Makes a Rival Bid Against Itself — and Why the UK Banned the Lot in 2011