Definition
A regular deposit is a deposit of a specific, identifiable thing — such as a particular object, document, or sum of coins — that the depositary is obligated to return in kind, meaning the exact thing deposited must be returned, not a substitute or equivalent. It is contrasted with an irregular deposit, in which fungible property (typically money) is deposited with the expectation that an equivalent quantity or value will be returned rather than the identical item.
The distinction turns on whether the deposited property retains its individual identity throughout the bailment. In a regular deposit, the depositary holds the specific res for the depositor; the property does not become the depositary's own to use or commingle. In an irregular deposit, title or at least practical ownership of the fungible item passes to the depositary, who is bound only to return the same type and quantity.
Common Language
Modern common usage (Wiktionary): "Regular" in ordinary English means customary, recurring, or standard. A "regular deposit" to a modern reader most naturally suggests a recurring bank transfer or a routine payment into an account.
Historical common usage (Webster's 1913): Webster's 1913 defines "regular" as conforming to a rule, established practice, or type; steady or uniform.
The legal gap is significant. In the historical legal sense, "regular" in this compound does not describe frequency or routine — it describes the nature of the obligation to return. A regular deposit is special or strict precisely because the depositary's duty is fixed to the identical object. A researcher reading "regular deposit" in a historical legal source must set aside the modern banking connotation entirely.
Common Confusion
Regular deposit and irregular deposit are frequently conflated in historical sources, and the terminology is counterintuitive to modern readers. An "irregular" deposit sounds like an exceptional or improper arrangement, but in classical legal usage it simply describes a deposit of fungible goods (most commonly money) where return of the equivalent is sufficient. A "regular" deposit sounds routine, but it is the stricter obligation — tied to the specific thing. Additionally, the term "special deposit" is used as a near-synonym for regular deposit in many sources; when a bank is said to hold a "special deposit," the implication is that the bank must preserve and return the identical property, not commingle it with general funds. Researchers should also distinguish regular deposit from simple bailment, which shares the return-in-specie feature but arises from different circumstances and carries different legal incidents.
Why It Matters in Research
The term appears almost exclusively in historical legal sources — treatises, digests, and case law predating the twentieth century — and is rarely used in modern American practice. Researchers encountering it in historical materials should recognize it as a term of civilian-influenced jurisprudence that shaped early Anglo-American law on bailment and banking obligations.
The critical research trap is the vocabulary reversal: modern banking law uses "regular" and "irregular" in ways that bear no relationship to this classical taxonomy. A nineteenth-century case discussing whether a bank held funds as a "regular" or "irregular" deposit is addressing whether the bank owed the specific coins back or merely an equivalent sum — a question with direct consequences for the depositor's priority in a bank insolvency. That question is structurally similar to modern debates over "special" versus "general" deposit accounts, and researchers tracing that lineage will find regular deposit doctrine at the historical root.
Rapalje & Lawrence's cross-listing of regular election, regular meeting, regular physician, and regular session in the same dictionary block is an artifact of alphabetical proximity, not conceptual connection. Researchers should not treat those entries as related to deposit law.
Corpus connections: The regular/irregular deposit distinction feeds directly into the history of banking law, the law of bailment, and questions of title in fungible goods. It also has a structural relationship to the civilian contract of mutuum (loan for consumption) versus depositum (deposit for safekeeping), a distinction that surfaces in comparative law research and in treatises drawing on Roman law sources.
Historical Dictionary Support
Black's Law Dictionary and Rapalje & Lawrence give substantively identical definitions, both describing a regular deposit as a strict or special deposit requiring return in specie. The convergence is unsurprising — both sources draw on the same civilian-influenced tradition.
Neither source elaborates on the practical consequences of the classification, which is a notable gap. The significance of the distinction becomes clear only in context: in a regular deposit, the depositary's insolvency does not affect the depositor's claim to the specific property because title never passed; in an irregular deposit, the depositor becomes a general creditor. Historical legal treatises on banking and bailment — particularly those from the mid-nineteenth century — fill this gap and should be consulted alongside dictionary definitions for any substantive research.
The definition is stable across both sources; there is no meaningful divergence to flag.
Jurisdictional Note
The regular/irregular deposit taxonomy was more prominent in civil law jurisdictions and in early American states whose jurisprudence engaged closely with civilian sources. Common law jurisdictions tended to address the same issues through the language of special versus general deposits rather than regular versus irregular. Researchers working in Louisiana or comparative law contexts will find the terminology more alive than in most common law state materials.
Encyclopedia Cross-Reference
The Law Mind Property Law Encyclopedia: Landlord-Tenant — Security Deposits (State Regulations) (property_26) — relevant for the broader deposit law context, particularly the obligation to return specific funds.