Definition
A Latin term from medieval English law denoting an imposition, tax, or tribute levied by royal or governmental authority. The term appears primarily in historical legal records and treatises concerned with the Crown's power to levy charges on trade and commerce, particularly customs duties and other exactions imposed without explicit parliamentary sanction. It is a term of art in the history of English fiscal and constitutional law rather than a term in active modern legal use.
Common Language
Modern common usage (Wiktionary): Not a standard English word; encountered primarily in legal, ecclesiastical, or academic Latin contexts, where it carries the general sense of "a placing upon" or "a burden imposed."
Historical common usage (Webster's 1913): Not separately entered; the anglicized form "imposition" appears with meanings ranging from a tax or burden to an act of fraud or deception, as well as the ecclesiastical sense of laying on of hands.
The gap between common and legal meaning is historically significant. In ordinary English, "imposition" drifted toward the sense of an unfair or fraudulent burden. In its Latin legal form, impositio carried a precise constitutional charge: a levy claimed by the Crown on its own prerogative, outside parliamentary grant. That distinction was the entire point of the Great Case of Impositions.
Common Confusion
Impositio is sometimes loosely grouped with tallage, scutage, and other medieval exactions, but it carries a more specific constitutional valence in English legal history. The term is also easily conflated with its anglicized descendant "imposition," which by the seventeenth century was used both for the specific prerogative levy at issue in Bate's Case and for any tax or burden generally. Researchers should not assume that every use of "imposition" or "impositions" in historical sources tracks the precise Latin term or its constitutional controversy.
Why It Matters in Research
The term is essentially dormant in modern law but is a critical keyword in three research contexts.
First, constitutional history of the taxing power. Impositio sits at the center of the pre-Civil War debate over Crown prerogative versus parliamentary control of taxation. The Great Case of Impositions (Bate's Case, 1606), reported at 2 Howell's State Trials 425, turned on whether the Crown could levy customs duties beyond those authorized by Parliament. Researchers tracing the development of the parliamentary power of the purse — and by extension the later constitutional settlements — need fluency with this term.
Second, Coke's Institutes as a primary source. Burrill notes that Lord Coke dated the term's first English legal use to the thirteenth year of Edward III and treated the subject at 2 Institutes 60 and 530. Researchers working in Coke's Institutes will encounter impositio as a doctrinal term, not merely a descriptive one. Coke's treatment was itself politically charged; his interpretation of the Confirmatio Cartarum (Statute Confirming the Charters, referenced at chapter 7) was part of a sustained argument for parliamentary supremacy over fiscal exactions.
Third, the older term maletot. Burrill flags that the earlier expression for the same concept was maletot (or maltolt), a word appearing in the Confirmatio Cartarum itself. Researchers in early records may encounter maletot where later commentators use impositio. These are not identical in scope — maletot referred specifically to unlawful or excessive customs — but they overlap substantially in the documentary record and in Coke's discussion.
A practical trap: Burrill's entry contains a textual artifact — a dangling fragment ("default to comply with it is excused. 3 Hill's (N. Y.) R. 570") that appears to belong to an adjacent entry and has no evident connection to impositio. Researchers should not treat this citation as authority on the term.
Historical Dictionary Support
Burrill's Law Dictionary provides the foundational English-language legal dictionary treatment. It correctly identifies the Latin root (imponere, to place upon or impose), the constitutional context, Coke's dating of the term's appearance in English legal usage, and the connection to the Great Case of Impositions. It also usefully cross-references the older term maletot and its statutory appearance in the Confirmatio Cartarum.
What Burrill does not provide is any account of the doctrinal stakes. The entry treats impositio as a word-history note rather than engaging with why the distinction between parliamentary grants and royal impositions mattered — or why Coke's reading of the relevant statutes was contested. For that analysis, the State Trials report and secondary works on Stuart constitutional history are necessary complements. No other source dictionary was available for this term.
Jurisdictional Note
Impositio is a term of English legal history with no direct counterpart in American or other common law jurisdictions. It has no operational meaning in current law anywhere in the common law world. Researchers in American legal history may encounter it in discussions of the colonial-era taxation controversies, where English precedents around prerogative impositions were invoked by both sides, but the term itself was not transplanted into American legal usage.