The governing legal framework
Mexican M&A transactions draw from several bodies of law simultaneously:
- The General Law of Commercial Companies (LGSM) sets the foundational rules for corporate mergers—how they are approved by shareholders, how creditors are notified, and how the surviving entity assumes the obligations of the merged company. A statutory merger under Mexican law requires publication in the official gazette and a waiting period before it takes effect.
- The Federal Economic Competition Law (LFCE) and the Federal Telecommunications Institute (IFT)—for the telecom and media sectors—require pre-closing notification when a transaction exceeds certain thresholds. The Federal Economic Competition Commission (COFECE) reviews whether a proposed operation would produce anticompetitive effects. Missing a filing obligation triggers both fines and the risk of a transaction being declared void.
- The Foreign Investment Law (LIE) imposes restrictions on foreign ownership in certain sectors—energy, transport, broadcasting, and others—and requires approval from the National Foreign Investment Commission (CNIE) when foreign acquisitions exceed defined thresholds. This is a critical early-stage check for any cross-border deal.
- Tax law governs how the transaction is structured. An asset purchase, a share purchase, and a statutory merger each carry different tax consequences for the seller and the buyer. Capital gains treatment, cost basis rules, tax consolidation eligibility, and withholding obligations all need to be mapped before structure decisions are made.
Transaction structures in Mexican M&A
Two primary structures dominate Mexican M&A:
Share purchase
The buyer acquires the shares of the target company directly. The target continues to exist as a legal entity; its contracts, licenses, and obligations transfer with the shares. This structure is generally cleaner for the buyer from a continuity standpoint, but the buyer assumes all historical liabilities of the target—disclosed and undisclosed.
Due diligence is therefore critical in share purchases. Tax contingencies, labor disputes, pending regulatory actions, and off-balance-sheet liabilities all follow the company into new ownership.
Asset purchase
The buyer acquires specific assets—equipment, intellectual property, inventory, real estate, contracts—without taking on the target’s corporate shell. This limits liability exposure but creates complexity around transferring contracts (which may require counterparty consent), employee transitions (which trigger mandatory severance calculations under the Federal Labor Law), and any assets with registration requirements.
Statutory merger
In a statutory merger, one company absorbs another—or two companies combine into a new entity. The surviving company assumes all assets, rights, and obligations of the merged company by operation of law. This is a slower process due to creditor publication and waiting period requirements, but it can be the cleanest structural solution for group reorganizations.
The M&A process in Mexico: key stages
1. Preliminary agreement and structure decision
Before due diligence begins, the parties typically sign a letter of intent (LOI) or term sheet. This document is generally non-binding on price and structure, but binding on exclusivity and confidentiality. The structural decision—share purchase, asset purchase, or merger—should be made here, in consultation with legal and tax advisors, because it shapes everything that follows.
2. Due diligence
A thorough legal due diligence review covers:
- Corporate organization and shareholder agreements
- Real property and intellectual property ownership
- Material contracts and change-of-control clauses
- Labor contingencies and employee benefit obligations
- Environmental liabilities (particularly relevant in real estate and industrial transactions)
- Tax history and pending fiscal reviews
- Regulatory licenses and permits, and their transferability
- Pending or threatened litigation
In Mexico, where public registry systems have gaps and informal commercial practices are common, due diligence benefits from local expertise that knows where records tend to be incomplete.
3. Negotiation and contract drafting
The definitive agreement—whether a Stock Purchase Agreement, Asset Purchase Agreement, or Merger Agreement—translates the deal into binding obligations. Key negotiation points include purchase price and adjustment mechanisms, representations and warranties, indemnification scope and caps, closing conditions, and post-closing obligations.
Mexican law does not have an established M&A contract tradition as developed as U.S. or UK law. Parties frequently adapt international-style agreements for use in Mexico, which requires careful adaptation to ensure Mexican law governs appropriately and dispute resolution mechanisms are enforceable.
4. Regulatory approvals
Depending on the size and sector of the transaction, this stage may require COFECE or IFT notification, CNIE approval for foreign investment, sector-specific regulator approval (financial, energy, or telecom), or tax authority notifications for certain restructurings.
5. Closing and post-closing
Closing involves executing the definitive agreements, transferring consideration, updating public registries, and notifying relevant government agencies of the change in ownership. Post-closing obligations—including earn-out payments, transition service arrangements, and integration steps—need to be clearly documented to avoid disputes.
Common deal-breakers in Mexican M&A
Several issues derail deals that might otherwise close:
- Labor contingencies. Mexico’s labor law provides strong employee protections. Unresolved disputes, improperly documented terminations, and unrecognized overtime obligations can generate significant undisclosed liability.
- Tax contingencies. The SAT (Mexico’s tax authority) has broad audit powers and can revise tax returns going back five years. Unpaid taxes, disallowed deductions, and improper VAT treatment are common findings in due diligence.
- Real property title defects. For deals involving real estate, title irregularities—including unclear chains of title, informal subdivision, or missing notarized documentation—can block closing or require costly remediation.
- Change-of-control clauses. Key contracts—supplier agreements, government concessions, and technology licenses—often include change-of-control provisions that require counterparty consent before a share transfer. Failing to identify these in due diligence can create problems at closing or post-closing.
Working with a Mexican M&A attorney
The role of legal counsel in Mexican M&A goes beyond drafting documents. An experienced attorney identifies legal risks before they become deal-breakers, structures transactions to minimize tax and regulatory exposure, negotiates protections that match the actual risk profile of the deal, and ensures that closing mechanics comply with Mexican formality requirements—many of which require notarization, public registry filings, or official gazette publications.
At Schöndube · Fernández · López Madrigal, we advise on transactions across sectors, with particular experience in real estate, hospitality, and corporate group restructurings in Quintana Roo and throughout Mexico.
Frequently asked questions
A straightforward share purchase can close in 60 to 90 days once due diligence begins, assuming no material issues surface. Asset purchases and statutory mergers typically take longer—three to six months—due to contract transfer requirements and, in the case of mergers, the mandatory creditor publication and waiting period.
No. COFECE review is only required when the transaction meets specific economic thresholds based on the value of the assets, the annual sales of the parties, and the combined market presence. Most mid-market deals do not trigger mandatory notification. Your attorney should confirm whether your transaction requires filing.
In most sectors, yes. Mexico permits 100% foreign ownership in the majority of economic activities. However, certain sectors—including energy generation, broadcasting, and land transportation—have foreign ownership restrictions that must be reviewed before any acquisition structure is finalized.
In Mexican law, a “fusión” (merger) is a specific legal procedure under the LGSM where one entity absorbs another and the absorbed entity ceases to exist. An acquisition typically refers to the purchase of shares or assets—the target entity continues as a separate legal person unless a subsequent merger is carried out.
Yes, though the market is less developed than in the U.S. Representations and warranties insurance is available for Mexican transactions, typically through international insurers. Its viability depends on transaction size and the quality of due diligence conducted.
For guidance on your specific transaction, contact Schöndube · Fernández · López Madrigal.