Cross-border M&A is like a journey: to be successful, it requires solid preparation, adaptability and the right guidance. At Eight Advisory, our experts support dealmakers on both sides of the Atlantic every day. We’re delighted to present our Transatlantic M&A Playbook, a strategic guide that decrypts the key differences between mergers and acquisitions in the United States and Europe. This resource helps investors prepare for cross-border ventures and unlock value creation. It covers everything you need to know to manage risk, ensure compliance, structure tax efficiently, and seamlessly adapt to cultural nuances.

Cultural differences: adapting your negotiating posture

Cultural differences have a significant impact on Transatlantic M&A transactions, influencing negotiation styles, expectations, and analysis methods.
In Europe, for example, negotiations tend to be more formal and relationship-based, with a strong focus on building trust and ensuring regulatory compliance. This approach reflects a culture where caution, consultation and a long-term vision prevail.
By contrast, negotiations in the United States are generally more direct, results-oriented and pragmatic. Efficiency and speed of execution are valued in a culture where immediate performance dominates.
These differences are reflected in due diligence practices: in Europe, due diligence typically adopts a business-oriented and operational lens, involving extensive analysis of business trends, growth drivers and sector risks. Whereas in the United States, due diligence commonly center on financial metrics, with a focus on quality of earnings, due to the frequent absence of audits and prevalence of a bottom-line oriented mindset.
Acknowledging these cultural nuances and understanding their impact on the transaction is key to ensure smooth discussions between parties.

Tax and financial structuring: maximising profitability

Tax structuring is critical to get the most out of a deal.

In Europe, share deals are the norm and tax liabilities are transferred. In the US, however, asset deals are more common, allowing goodwill to be amortised over 15 years.
US entities can choose their tax regime (opaque or transparent), which affects the transfer of tax liabilities.
Financing models also differ: in Europe, deals are often based on structured financing, including debt; in the US, however, equity is more frequently used.
While intra-EU or intra-US financial flows are generally exempt from withholding tax, transatlantic flows may be taxed.

Comprehensive advance tax planning is instrumental in minimising expenses and optimising post-agreement synergies.

Compliance: meeting regulatory requirements

Failure to take regulatory constraints into account from the initial stage of a transaction can result in delays or even compromise the transaction.
In France, for example, consultation with the Social and Economic Committee (CSE) is mandatory before signing, which can impact the transaction timeline.
Foreign investments are subject to specific controls. In the United States, CFIUS may block a transaction for national security reasons, while Europe applies FDI screening mechanisms at the Member State level, in addition to the European Commissions’s review procedure.
Contract law also varies. For example, good faith is an obligation in France but not in the US, influencing how agreements are drafted and how parties position themselves.
Robust legal coordination is necessary to avoid obstructions and meet deadlines.

Risk management: securing the deal value

In Europe, risk is typically managed through mutual transparency and the principle of good faith. Parties negotiate openly, often agree on a price before closing via a locked box mechanism and accept full responsibility for the information shared. While this reduces uncertainty, it also makes the parties, particularly the buyer, more accountable, especially in the presence of anti-sandbagging clauses.
In the United States, risk is predominantly addressed via contractual safeguards. Due diligence is tailored to specific areas, the price is adjusted at completion and warranties operate under specific clauses. This approach favours the use of warranty and indemnity (W&I) insurance, which enables risk to be transferred even in cases where the buyer had prior knowledge (thanks to ‘pro-sandbagging’ clauses).
Seeking advice from lawyers, well-informed on local technicalities, is highly recommended to address these differences in the most appropriate manner.

How Eight Advisory can support you

Thanks to our integrated approach, combining financial, tax and legal expertise, and our international footprint, we support our clients throughout the entire transaction process. Our teams have valuable experience in overcoming the specific challenges of transatlantic transactions.
Download our playbook to learn more and discover our M&A Transaction Services Expertise Area and our Tax Consulting Services.