Definition
Animus donandi is a Latin maxim meaning "the intention to give." In gift law, it refers to the donor's specific mental state — the deliberate, voluntary intent to transfer property to another person without expectation of compensation or return. Animus donandi is not merely a willingness to transfer; it is the conscious purpose of making a gift, as distinguished from a sale, loan, or other transaction motivated by consideration.
The principle extends beyond the donor's intent alone. As Burrill records, a valid gift requires the concurrent will of both parties: the donor must have animus donandi — the intent to give — and the donee must have a corresponding intent to receive. Neither act alone completes the gift.
Common Confusion
Animus donandi is sometimes loosely equated with mere consent to transfer, but the two are distinct. A person may consent to parting with property under compulsion, mistake, or in exchange for value — none of which satisfies animus donandi. The intent must be gratuitous and free. Similarly, animus donandi should not be confused with animus revertendi (the intent to return) or other animus formulations used in property and criminal law; each describes a different mental state operative in a different legal context.
Core Elements
Three elements are traditionally required for animus donandi to be legally operative:
1. Gratuitous intent. The donor must intend to transfer without receiving value in return. A transaction motivated by past consideration, moral obligation under legal compulsion, or contractual duty lacks true animus donandi.
2. Voluntariness. The intent must be free from fraud, duress, undue influence, or mistake. A gift procured by misrepresentation fails at the animus stage even if the physical transfer occurred.
3. Contemporaneity with delivery. The donative intent must exist at the time of transfer. A later change of heart does not retroactively supply or destroy animus donandi, though it may be evidence of the donor's state of mind at the critical moment.
Why It Matters in Research
Animus donandi appears most often in gift law disputes — challenges to inter vivos gifts, contested deathbed transfers, and cases involving gifts causa mortis. When researching historical cases, be alert to the fact that courts used the Latin phrase with varying degrees of precision. Some older opinions treat animus donandi as a synonym for simple intent to give; others apply it as a term of art requiring full voluntariness and contemporaneous delivery.
Researchers working in equity will encounter animus donandi in constructive trust and resulting trust analysis, where courts ask whether a transfer was intended as a gift or an implied trust. The presence or absence of donative intent is often the dispositive question. Equity sources and law sources may reach different conclusions using the same phrase.
In succession and estate law, animus donandi connects directly to questions of testamentary intent and the distinction between gifts and contractual arrangements. When reviewing probate records or estate litigation from the nineteenth and early twentieth centuries, watch for courts conflating donative intent with testamentary capacity — related but legally separate inquiries.
The phrase also appears in Roman law sources underlying civil law jurisdictions, so researchers working in Louisiana, Quebec, or comparative law contexts will find animus donandi operating with a somewhat different doctrinal genealogy than in common law jurisdictions.
Historical Dictionary Support
Black's Law Dictionary provides the core formulation concisely: "the intention of giving," described as "necessary to constitute a gift." This is accurate but spare, giving no guidance on the bilateral nature of the requirement.
Burrill's Law Dictionary is more instructive. Burrill supplies the maxim in full — Non valet donatio nisi tam dantis quàm accipientis concurrat mutuus consensus et voluntas — making explicit that a gift is not valid without the concurring mutual consent and will of both donor and donee. This bilateral framing is a meaningful addition that Black's early editions omit. For researchers tracing the doctrinal foundation of gift law, Burrill's entry is the more useful starting point precisely because it situates animus donandi within the broader structure of gift validity rather than treating intent as a purely unilateral matter.
Neither dictionary addresses the evidentiary question of how animus donandi is proved, which became increasingly important as courts confronted disputed transfers between family members and in anticipation of death. Later case law fills this gap.
Jurisdictional Note
Civil law jurisdictions (Louisiana, Quebec, and their analogues) treat animus donandi as a foundational concept derived directly from Roman law, often with more formal doctrinal structure than common law courts apply. Common law jurisdictions in the United States and England developed the concept through case law rather than codified gift law, producing more variation in how courts articulate and apply the standard.