Definition
Ducroire (French law) is a guarantee given by an agent or intermediary that the third party with whom the agent contracts will fulfill their obligations — particularly the obligation to pay. The term is the French-law equivalent of del credere, the doctrine by which a factor or commission agent assumes personal liability for the solvency and performance of the buyer or counterparty they introduce.
In practical terms, an agent operating on a ducroire basis stands as a secondary guarantor: if the third party defaults, the agent makes good the loss to the principal. In exchange, the agent typically receives a higher commission — the ducroire commission — reflecting the added risk assumed.
Common Confusion
Ducroire and del credere are not two different doctrines — they are the same doctrine, expressed in French and Italian commercial vocabulary respectively. Researchers encountering either term in historical sources should treat them as interchangeable in substance. The confusion arises because comparative legal writing of the 18th and 19th centuries drew on both French and Italian mercantile law, and the same commercial arrangement appears under different names depending on the jurisdiction of origin of the source. See DEL CREDERE.
Why It Matters in Research
Ducroire appears almost exclusively in French-law contexts and in English-language legal dictionaries that were synthesizing French commercial law alongside common law doctrine. Researchers working in 19th-century commercial law sources — particularly those touching French, Belgian, or Louisiana law — will encounter ducroire in discussions of agency, factor liability, and commission merchant arrangements.
The central research trap is treating ducroire as a distinct or more limited doctrine than del credere. The historical dictionaries uniformly treat them as equivalent, and no meaningful doctrinal distinction separates them. If a source uses ducroire, locate the parallel del credere authority in the common law corpus for doctrinal depth — the French term will rarely carry its own body of case law in English-language reporters.
Louisiana is the most likely American jurisdiction where ducroire appears in operative legal sources rather than merely in dictionary or treatise glosses, given its French civil law heritage. Researchers working in Louisiana commercial law should check both the French-language sources and the Louisiana Civil Code annotations for the concept.
For historical commercial law research, ducroire also signals the broader context of factor and commission merchant liability — a field that was extensively developed in 18th- and 19th-century French commercial codes (notably the Code de Commerce of 1807) and imported into comparative legal treatises circulating in English.
Historical Dictionary Support
The three source dictionaries are in complete agreement: ducroire equals del credere, and nothing more is said. Black's Law Dictionary (1st ed.) gives "In French law. Guaranty; equivalent to del credere," and the second edition repeats the same entry with no elaboration. Rapalje & Lawrence is equally terse, adding only the linguistic note that the term derives from French.
None of the historical sources define the structural elements of the ducroire arrangement, the nature of the commission premium, or the procedural consequences of the guarantee. For those details, researchers must consult the del credere entries in the same dictionaries, which receive fuller treatment, as well as the treatise literature on factor liability.
The brevity of these entries is itself informative: ducroire was regarded by English-language lexicographers as a term of art requiring only translation, not independent doctrinal explanation. This signals that the concept's legal home was understood to be the French and civil law tradition, not the common law.
Jurisdictional Note
Ducroire as a term of art is primarily relevant to French, Belgian, and Louisiana law. Common law jurisdictions developed the same commercial arrangement under the del credere label, and English-language courts rarely if ever used the French term in published opinions. Researchers in civil law jurisdictions should verify current terminology, as modern French and Belgian commercial law may use ducroire in statutory or regulatory contexts that go beyond the historical dictionary definitions.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Agency; Del Credere; Factors and Commission Merchants.