How do civil-law countries define commercial transactions for legal purposes?

In civil-law countries, the term "commercial transaction" carries specific legal consequences that distinguish it from ordinary consumer dealings. Because these systems often apply specialized rules to business activities—such as unique regulations regarding bankruptcy or commercial sales—they require precise definitions to determine when these rules apply.1

These definitions are typically found in a country's commercial code and generally combine two elements: the definition of a "merchant" and the definition of a "commercial transaction" (acte de commerce). Countries differ in their emphasis:1

• Merchant-based focus: In countries like Germany, the legal definition centers primarily on the status of the merchant.1
• Objective test: In countries like France, the definition focuses on the nature of the transaction itself, regardless of the social status of the parties involved.1

Despite these different approaches, the practical results are similar: a transaction is generally considered "commercial" if it is conducted by a merchant in the exercise of their profession. This special regime exists because commercial rules assume the parties are knowledgeable and versatile, requiring less protection than the ordinary citizen.1