A traditional break-up fee is generally payable by the target or seller if the transaction fails because it accepts a superior offer or takes another specified action.
A reverse break-up fee is generally payable by the buyer when closing fails for reasons allocated to the buyer, such as financing failure or failure to obtain required regulatory or antitrust approvals.
The mechanism exists on both sides of the Atlantic, but its legal treatment differs significantly.
In the United States, particularly Delaware, break-up fees are established deal-protection and risk-allocation tools. In France, their enforceability depends much more heavily on legal characterization, proportionality, corporate interest, and the preservation of competing offers.
For cross-border M&A, copying a U.S. termination fee clause into a French transaction without adaptation can therefore create additional legal risk rather than additional deal certainty.
What Is a Break-Up Fee in M&A?
A break-up fee is a predetermined payment triggered when an M&A transaction fails under circumstances defined in the transaction documents.
Its purpose may include:
- compensating one party for transaction costs;
- allocating execution risk;
- discouraging opportunistic termination;
- protecting a bidder that has invested heavily in due diligence and negotiations;
- or allocating regulatory and antitrust risk.
Example
Company A agrees to acquire Company B for $2 billion.
The merger agreement provides that if Company B terminates the transaction to accept a superior competing offer, it must pay Company A $60 million.
The $60 million payment is the break-up fee.
At 3% of transaction value, it compensates the initial bidder while still leaving room for a superior proposal.
What Is a Reverse Break-Up Fee?
A reverse break-up fee operates in the opposite direction.
Instead of the target paying the buyer, the buyer pays the target if the transaction fails for specified reasons allocated to the buyer.
Common triggers include:
- failure to obtain acquisition financing;
- failure to secure antitrust clearance;
- failure to obtain regulatory approvals;
- or certain buyer-side termination events.
Reverse break-up fees are particularly important when the seller bears significant execution risk after signing.
In major U.S. transactions involving substantial antitrust uncertainty, reverse fees may be materially higher than ordinary target break-up fees.
Break-Up Fees in the United States
Termination fees are a well-established feature of U.S. M&A practice, particularly in public company transactions and large private deals.
In public U.S. transactions, ordinary break-up fees commonly fall around 2.5% to 3% of transaction value.
Reverse break-up fees can be significantly higher where the buyer assumes substantial regulatory risk.
Fenwick's analysis of publicly disclosed 2023 transactions containing antitrust reverse break-up fees found that approximately 64% were between 4% and 7% of deal value, with a median fee of 5%.
The economic logic is straightforward:
The party best positioned to control a particular risk may contractually assume the financial consequences if that risk prevents closing.
The Delaware Approach: Deal Protection Within Fiduciary Duties
Delaware law does not give companies unlimited freedom to impose termination fees.
Boards remain subject to fiduciary duties.
In a sale-of-control context, the Revlon line of cases requires directors to pursue the transaction reasonably designed to maximize shareholder value.
Cases such as QVC reinforce judicial scrutiny of deal-protection mechanisms that could improperly prevent competing bidders from making superior offers.
The relevant question is therefore not simply:
Is there a break-up fee?
The question is:
Does the overall deal-protection package improperly deter or preclude a superior transaction?
A reasonable break-up fee can therefore strengthen deal certainty without necessarily preventing the board from responding to a better offer.
Why France Treats the Same Mechanism Differently
France has no single statutory regime specifically dedicated to break-up fees.
The legal analysis therefore depends on the economic purpose and drafting of the clause.
The first question is one of legal characterization.
If the Fee Is a Penalty Clause
Where the payment is designed to sanction contractual non-performance, it may qualify as a clause pénale under Article 1231-5 of the French Civil Code.
That matters because a French judge may reduce or increase the agreed penalty where it is manifestly excessive or derisory.
The parties therefore cannot completely eliminate judicial scrutiny merely by agreeing on the amount in advance.
If the Fee Is Genuine Consideration for a Right to Withdraw
A different analysis may apply where the payment constitutes the agreed price of a genuine contractual right to walk away from the transaction.
In French law, this can resemble a clause de dédit.
The distinction is important.
A payment designed to punish breach and a payment designed to purchase a contractual exit right do not necessarily receive the same legal treatment.
Public M&A in France: Protecting Competing Offers
The analysis becomes even more sensitive for listed companies.
The French Financial Markets Authority, the AMF, pays particular attention to whether deal-protection arrangements interfere with the free competition between public offers and potential superior bids.
The Capgemini/Altran transaction provides a useful benchmark.
The transaction included a €75 million break-up fee representing approximately 2% of the target's equity value.
In its October 14, 2019 decision, the AMF concluded that the fee did not prevent the free play of competing offers and higher bids.
The 2% figure should therefore be understood correctly:
It is a useful French public-M&A benchmark, not a statutory safe harbor or legal maximum.
A fee must always be assessed within the circumstances of the transaction.
France vs. United States: The Key Difference
The mechanism is therefore economically similar but legally different.
A Simple Cross-Border Example
Assume a U.S. buyer proposes to acquire a French company.
The buyer asks for the same 3% break-up fee used in its U.S. transactions.
From a U.S. perspective, the percentage may appear entirely conventional.
That does not end the French analysis.
The parties still need to determine:
- What event triggers payment?
- Does the fee compensate a contractual right or sanction a breach?
- Is the amount proportionate?
- Is the arrangement consistent with the company's corporate interest?
- If the target is listed, could it deter a competing bidder?
- Does the clause interact with employee consultation or other pre-closing requirements?
The percentage alone cannot answer those questions.
Frequently Asked Questions
What is a break-up fee?
A break-up fee is a predetermined amount payable when an M&A transaction fails under specified circumstances, often where the target accepts a superior offer or breaches agreed deal protections.
What is a reverse break-up fee?
A reverse break-up fee is generally payable by the buyer when the transaction fails because of an allocated buyer-side risk, such as financing failure or failure to obtain regulatory clearance.
How large are break-up fees in U.S. M&A transactions?
In public company transactions, ordinary break-up fees often fall around 2.5% to 3% of transaction value.
How large are antitrust reverse break-up fees?
Fenwick's 2023 data showed that approximately 64% of publicly disclosed deals in its sample with antitrust reverse break-up fees used fees between 4% and 7% of deal value. The median was 5%.
Is there a maximum break-up fee in France?
No general statutory percentage applies.
For listed companies, the AMF examines whether the arrangement may improperly deter competing offers. The 2% fee accepted in the Capgemini/Altran transaction is a useful market reference, not a legal ceiling.
Can a French judge reduce a break-up fee?
Potentially yes.
If the clause qualifies as a penalty clause under Article 1231-5 of the French Civil Code, a judge may reduce or increase it when it is manifestly excessive or derisory.
Can a U.S. break-up fee clause simply be reused in a French deal?
That approach creates risk.
The clause should be adapted to French contract law, corporate interest, public-offer rules where applicable, and the specific allocation of risks in the transaction.
Key Takeaways
The same contractual mechanism reflects two different legal cultures.
In the United States, particularly Delaware, termination fees are established tools for allocating deal risk, subject to fiduciary-duty scrutiny.
In France, the analysis starts with the legal nature of the payment and continues through proportionality, corporate interest, and, for listed companies, the preservation of competing offers.
The practical rule for cross-border M&A is therefore simple:
Do not import the percentage. Import the economic objective, then rebuild the clause under the law governing the deal.
Conclusion
Break-up fees can make an M&A transaction more predictable.
They can allocate financing risk, regulatory risk, competing-bid risk, and the cost of a failed transaction before those risks materialize.
However, predictability depends on enforceability.
A provision that is standard in Delaware may require materially different drafting in France.
For CEOs, CFOs, and M&A teams, the relevant question is therefore not simply how large the termination fee should be.
It is: