Obligation
Obligation: A legally binding duty, especially a duty to pay money or perform under a contract. Statutes define the word for their own purposes. For example, 31 U.S.C. § 1501 sets when a federal agency may record an amount as an obligation of the United States Government, and 18 U.S.C. § 8 defines "obligation or other security of the United States" for federal counterfeiting crimes.

What obligation means
In short, obligation is a term you will meet in court papers, rules and legal research. The definition above gives its usual meaning in American civil practice. However, the exact meaning can depend on the rule, statute or court decision that uses it. So it helps to read the term in context.
Where obligation comes up
The term is used across many kinds of cases. For example, you may see it in pleadings, motions and court orders. To see it in context, browse the motions and procedures library or the Learn the Law topics.
Read the source: Government obligations.
How to research the term
To research obligation, begin with the rule, statute or contract where the word is used. Each one can give it a slightly different meaning. Then compare that text with how courts in your area have applied it. Also check the local rules of your court, since they can add requirements. If your case is in state court, the state rules control. So start with our state procedures guide to find them. In the end, always confirm that the source you rely on is current.
You can read the current federal court rules online for free.
Related legal terms
- Notice of appeal: the document that starts an appeal.
- Nunc pro tunc: latin for "now for then." A court order that takes effect as of an earlier date, often to correct the record so it reflects what actually happened.
- Oath: a solemn declaration, usually invoking a sense of moral or religious obligation, that a statement is true or that a person will faithfully perform a duty.
- Objection: a formal statement opposing a question, an item of evidence, a discovery request or a ruling, together with the reason.
Why precise terms matter
Legal words often look like everyday words, but they can carry a precise meaning. Because of that, a small misreading can change how you understand a deadline, a duty or a right. Our glossary keeps each definition short and links it to the procedures where it matters.
Sources
Sources last reviewed: 2026-10-24
Lawtopolis provides legal information and education, not legal advice. Using this site does not create an attorney-client relationship. Laws and court rules vary by jurisdiction and change over time; verify every authority against the official source and consult a licensed attorney in your jurisdiction about your situation.
