Smart Contracts in the Mexican Legal System: Opportunities and Limitations

BANKING AND FINANCE / by Miguel Gallardo Guerra

The emergence of blockchain technology has given rise to new legal concepts that challenge traditional structures. One of the most debated is that ofsmart contracts—agreements that are automatically executed when certain programmed conditions are met.

In theory, a smart contract eliminates the need for intermediaries, reduces transaction costs, and improves efficiency. However, from a legal standpoint, significant challenges remain before these instruments can be fully recognized and utilized within the Mexican legal system.

What is a smart contract?

This is not a “contract” in the traditional sense. Rather, it is a piece of code stored on a blockchain network that automatically executes instructions when certain pre-programmed conditions are met, without human intervention. For example: if a payment is received, a digital asset is automatically released.

These contracts operate on a conditional logic of the form “if X occurs, then Y is executed,” which makes it possible to automate legal or business processes.

Is it valid in Mexico?

Mexican law does not yet expressly recognize smart contracts. However, Article 1803 of the Federal Civil Code provides that consent may be given “by electronic means,” and the Advanced Electronic Signature Law offers a framework that could apply in certain circumstances. Furthermore, the Commercial Code, beginning with Article 89, recognizes the validity of data messages and establishes that legal acts may be entered into by electronic, optical, or any other means, which opens the door to considering smart contracts as a valid form of expression of intent in certain commercial contexts.

The challenge lies not in the form, but in the content, intent, and interpretation. A contract is valid if there is consent, a subject matter, and a lawful cause, regardless of the medium. But in an automated contract, how is intent proven? What happens if there is a coding error? Who is liable?

Opportunities:

• They facilitate complex financial transactions (such as tokenized derivatives).
  
• They are useful in decentralized structures (DAOs, DeFi).
  
• They enable traceability and secure execution.
  

Limits:

• They do not eliminate the need to interpret complex clauses.
  
• They have not yet been formally recognized by Mexican judicial authorities.
  
• They may lack flexibility in the face of unexpected legal or business developments.
  

From a legal perspective, smart contracts should be viewed as complementary technical tools, not as substitutes for traditional legal agreements. Their development requires collaboration among programmers, lawyers, and regulators.

The law should not fear the code. It must learn to engage with it.

See you later!