Definition
A Latin maxim meaning "against the will of the debtor." The phrase describes actions taken with respect to a debt or obligation without the debtor's consent — most commonly, the application of a payment or set-off to a debt by the creditor or a third party over the debtor's objection. A debtor generally retains the right to direct how voluntary payments are applied among multiple debts owed to the same creditor. When a payment or credit is applied contrary to that direction, it is said to occur invito debitore — the debtor being, in effect, an unwilling participant in the allocation.
Common Confusion
INVITO DEBITORE and INVITO DOMINO are related Latin phrases that appear in close proximity in historical dictionaries and are sometimes conflated. Despite their parallel structure, they operate in entirely different legal domains: invito debitore concerns the application of payments or obligations in civil debt contexts; invito domino concerns the taking of property without an owner's consent and is an element of larceny analysis. Encountering one phrase in a historical source should not be read as authority on the subject governed by the other.
Why It Matters in Research
This term appears primarily in older equity and contract materials dealing with the application of payments. The practical scenario is specific: a debtor owes a creditor on multiple accounts or obligations, makes a payment, and a dispute arises over which debt that payment satisfies. The maxim surfaces when the creditor (or a court) applies the payment to a debt the debtor did not intend to reduce — for instance, to an interest-bearing debt rather than a statute-barred one, or to a secured rather than an unsecured obligation.
Researchers working through nineteenth-century equity digests, chancery reports, or treatises on the law of obligations will encounter invito debitore in the context of appropriation of payments. The term is rarely foregrounded in modern American legal writing, where the doctrine it encapsulates is typically discussed under "application of payments" without the Latin tag. This means a corpus search relying on the Latin alone will undercount relevant material; researchers should run parallel searches on the English doctrine.
The phrase also appears occasionally in discussions of set-off and counterclaim, where a party seeks to apply a cross-demand against an obligation the other side disputes. In that context, the maxim is used to signal that a legal mechanism is operating on the debtor without, or despite, the debtor's consent.
Be alert to Bouvier's adjacent entry for INVITO DOMINO, which is a distinct maxim used in criminal law (specifically larceny) to denote taking without the owner's consent. The two phrases are structurally parallel but legally unrelated. Bouvier's presents them in sequence, and historical sources occasionally run them together or cite one when the other is intended.
Historical Dictionary Support
Black's Law Dictionary reduces the term to a bare translation: "against the will of the debtor." This is accurate but provides no doctrinal context.
Bouvier's Law Dictionary likewise translates the phrase and then immediately transitions into a discussion of INVITO DOMINO, treating the two entries in tandem. While Bouvier's entry for invito domino is substantive — addressing the consent element in larceny and the contested question of owner-assisted theft detection — the invito debitore entry itself receives no independent elaboration. Neither major historical dictionary explains the application-of-payments context in which the phrase most commonly operated. Researchers relying solely on dictionary definitions will not grasp the term's functional role in equity practice.
The doctrinal content behind invito debitore is better found in nineteenth-century treatises on the law of obligations and equity, particularly in chapters addressing how payments among competing debts are allocated when the debtor's instructions are absent, incomplete, or overridden.