Definition
In fraudem legis (Latin: "in fraud of the law") is a maxim describing conduct undertaken with the intent or purpose of evading the operation of a law — technically complying with its letter while defeating its spirit and object. An act done in fraudem legis is not a direct violation of a prohibition but is structured or arranged so as to circumvent what the law requires or forbids. Courts applying this principle treat such acts as void or unenforceable, refusing to permit the transaction to serve as the basis for legal relief in the jurisdiction whose law is being evaded.
The concept is closely related to the civilian maxim contra legem facit qui id facit quod lex prohibet — "he acts against the law who does what the law forbids" — but in fraudem legis captures a distinct and subtler maneuver: the wrongdoer does not openly transgress but instead routes conduct around the prohibition through form, fiction, or indirection.
Common Confusion
In fraudem legis is sometimes conflated with fraud in the ordinary sense — deceit, misrepresentation, or intentional wrongdoing toward another person. The two concepts are distinct. In fraudem legis describes evasion of law itself as the object; the harm is to the legal order and to the jurisdiction whose rules are being circumvented, not necessarily to a specific counterparty deceived by a false statement. A transaction may be in fraudem legis with no misrepresentation to anyone, simply by being structured to fall outside a legal rule that would otherwise apply.
The phrase is also sometimes confused with fraud on the court or fraud upon a statute — related but not identical concepts. Fraud on the court involves procedural misconduct; in fraudem legis is a substantive doctrine about the legal effect of evasive transactions.
Why It Matters in Research
Researchers encounter in fraudem legis most commonly in three contexts, each presenting distinct navigational challenges.
First, conflict of laws. The phrase appears with particular frequency in private international law and choice-of-law disputes, where a party selects a favorable foreign jurisdiction not for legitimate reasons but to escape the mandatory rules of the law that would otherwise govern. The principle that courts will refuse to enforce transactions structured in fraudem legis of their own jurisdiction's law is foundational to this area and surfaces in older American and English equity cases as well as in civilian scholarship. Burrill's formulation — that an act done in fraudem legis cannot be the basis of a suit in the courts whose laws are attempted to be infringed — captures the enforcement consequence precisely.
Second, equity and avoidance of statute. In chancery practice and in equity generally, courts invoked in fraudem legis to reach transactions that nominally satisfied a statute's requirements while defeating its purpose. Researchers working in eighteenth- and nineteenth-century equity reports will encounter the phrase in this context, often without extended doctrinal explanation, as courts treated it as a self-evident ground for relief or denial.
Third, modern doctrinal descendants. Contemporary law does not commonly use the Latin phrase, but the underlying doctrine persists under different names: sham transactions, substance-over-form analysis, abuse of law (particularly in EU law), and statutory evasion doctrine. Researchers tracing the intellectual lineage of these modern doctrines should recognize in fraudem legis as a common ancestor. EU law in particular has developed an extensive "abuse of law" and "artificial arrangement" jurisprudence that maps closely onto the classical in fraudem legis framework; researchers working in comparative or transnational law will find the phrase a productive bridge concept.
A practical trap: because historical sources treat the phrase as self-explanatory, they rarely analyze its elements systematically. Researchers should not expect clear doctrinal tests from the historical dictionary entries alone. The New York cases cited in Black's and Burrill's — Jackson v. Jackson, 1 Johns. (N.Y.) 424 — provide the most accessible early American judicial treatment and are worth consulting directly for context.
Historical Dictionary Support
The historical dictionaries are consistent in their core definition — in fraud of the law, with intent or view of evading the law — and all three trace to the same authority: 3 Blackstone's Commentaries 94 and the early New York case at 1 Johns. 424. This convergence reflects the limited development of the doctrine in common law sources; the phrase was borrowed from Roman and civilian jurisprudence and never received the same systematic elaboration in English-language legal writing that it did in continental scholarship.
Burrill adds meaningful value beyond Black's by quoting Spencer, J.'s formulation of the enforcement consequence and by gesturing toward the civilian counterpart maxim (contra legem facit...), which Black's omits. Burrill also cites 15 Johns. 146 as an additional New York authority. What all three sources fail to do is distinguish in fraudem legis from direct statutory violation or analyze how courts are to identify evasive intent — gaps that reflect the historical reliance on judicial discretion rather than structured doctrine in this area.
Jurisdictional Note
The phrase and its associated doctrine appear most frequently in civilian and mixed legal systems, EU law, and in historical American equity and conflict-of-laws cases. Modern common law jurisdictions have largely absorbed the doctrine into statutory interpretation principles and substance-over-form analysis rather than maintaining in fraudem legis as a distinct operative concept. Researchers working in Louisiana, Quebec, or comparative law contexts will find the Latin phrase still in active use.