Definition
Chinese interest refers to the customary rate of interest prevailing in China, historically recognized by American courts as the applicable rate on monetary obligations made and payable in China where the parties did not specify an interest rate in their agreement. Courts applying this doctrine treated Chinese commercial custom as supplying the implied term that would otherwise be filled by the forum's default legal rate.
In practice, the rate recognized was one percent per month — twelve percent per annum — applied from the date the obligation matured. Where a promissory note was executed in China, payable at a future date, and the instrument was silent on interest, courts allowed this rate to run from the expiration of the stated payment period rather than from the note's inception.
Common Language
Modern common usage (Wiktionary): No entry. The phrase "Chinese interest" does not appear as a defined term in modern general usage.
Historical common usage (Webster's 1913): Not defined. The phrase does not appear as a dictionary entry.
The absence of any common-language definition underscores that this is a term of art drawn entirely from commercial practice and judicial recognition. A modern researcher encountering the phrase in an older legal document should not assume it carries any meaning beyond this specific technical usage.
Common Confusion
Chinese interest should not be confused with the general concept of interest (the time-value charge on a debt), nor with statutory or judgment interest rates. The distinction is that Chinese interest is a rate derived from foreign commercial custom, not from legislative prescription or contractual agreement. Courts applying it were not importing Chinese law as a system; they were recognizing a trade usage to fill a contractual gap.
Why It Matters in Research
This term is almost entirely a creature of nineteenth-century American commercial litigation involving the China trade. Its appearance in sources is narrow and dated. Researchers should note several navigational points:
First, the term surfaces in cases involving merchants engaged in the Pacific and China trade, predominantly in Pennsylvania, New York, and California courts during the mid-to-late 1800s. It is unlikely to appear in modern case law or statutes.
Second, the underlying legal mechanism — applying foreign commercial custom to supply a missing contractual term — is a precursor to modern conflict-of-laws analysis and the law merchant tradition. Researchers tracing the development of implied contractual terms or customary commercial rates may find this line of cases useful as early examples of courts deferring to trade usage rather than forum law.
Third, the specific citation in Bouvier (2 W. & S. 227, 264) refers to Watts & Sergeant's Pennsylvania Reports, placing this doctrine squarely in Pennsylvania appellate jurisprudence of the 1840s. Researchers should search that reporter and contemporaneous Pennsylvania commercial cases for the fullest picture.
Fourth, do not expect this term to appear in modern interest-rate discussions, loan agreements, or statutory compilations. Its research utility is historical and doctrinal, not transactional.
Historical Dictionary Support
Bouvier's Law Dictionary is the sole historical dictionary source to define this term, and its treatment is brief. Bouvier identifies the rate (one percent per month), the triggering condition (a note made in China, silent on interest), and the moment from which the rate runs (expiration of the payment period, not the note's date). The single case reference — 2 W. & S. 227 — is the apparent foundation for the entry; Bouvier does not generalize beyond it or purport to state a widespread rule.
No competing historical dictionary definition exists to check against Bouvier. The term does not appear in Black's Law Dictionary early editions or in standard treatises on interest law such as those by Sedgwick or Lawson, suggesting its currency was limited even at its peak. Bouvier's treatment should therefore be understood as a practitioner's note on an observed judicial ruling rather than a settled statement of doctrine with broad application.
What the historical sources collectively miss is any discussion of how "Chinese interest" interacted with usury law. Whether Pennsylvania's usury ceiling applied to a foreign-custom rate, or whether the foreign-custom rate displaced domestic limits, is not addressed by Bouvier and would require direct examination of the underlying case.
Jurisdictional Note
The documented judicial application is Pennsylvania (Watts & Sergeant's Reports). Whether other jurisdictions independently adopted the same rate as "Chinese interest," or simply applied their own gap-filling rules to China-trade instruments, is not established in the available dictionary sources. Researchers working in New York or California China-trade litigation should not assume the Pennsylvania rate was universally applied under this name.