What counts as the holding
The holding is the proposition of law the court had to adopt in order to resolve the dispute in front of it. Test it by subtraction: if you removed the statement, would the court have had to reach a different result? If yes, it is the holding. If the result stands without it, it is not.
Because the holding is tied to the facts the court actually had, it is usually narrower than it first appears. A court that holds a warrantless search of a cell phone incident to arrest violates the Fourth Amendment has not held anything about searches of cars, and a later court is free to treat the car question as open.
What counts as dicta
Dicta, short for obiter dicta, is language a court did not need in order to decide. It covers hypotheticals the court raises to illustrate a limit, observations about how a different set of facts might come out, responses to arguments the court then declines to rest on, and general commentary about the state of the law.
Dicta is not worthless. It signals how a court is thinking and often predicts where the doctrine is heading, which is exactly why advocates quote it. It simply does not bind. A later court that disagrees with dicta can ignore it without overruling anything.
How to tell them apart in a real opinion
Start from the disposition and work backwards. Find what the court actually did — affirmed, reversed, remanded — then trace the minimum chain of legal reasoning required to get there. That chain is the holding. Everything off the chain is dicta.
Watch the verbs and the framing. Courts tend to mark their own dicta, and once you notice the signals you can spot it quickly.
- "We need not decide whether..." — explicitly reserved, so dicta.
- "Even if the statute did apply, the result would be the same" — an alternative rationale the court did not need; treated as dicta by most courts.
- "We hold that..." — usually the holding, though courts are sloppy with this phrase and sometimes use it for broader propositions than the facts support.
- "Suppose instead that..." — a hypothetical, so dicta.
- Footnote commentary on unrelated doctrine — almost always dicta.
Why the distinction decides arguments
The whole practical stake is stare decisis. A holding from a court above you is mandatory authority: you must follow it, and your opponent cannot argue around it except by distinguishing the facts. Dicta is persuasive at best, so your opponent can simply ask the court not to follow it.
This is why briefs fight so hard over characterization. If a passage helps you, you call it the holding and tie it to the facts the court relied on. If it hurts you, you call it dicta and show the court could have reached the same result without it. Both moves come down to the subtraction test.
Where students go wrong
The most common error is treating the broadest sentence in the opinion as the holding because it sounds the most quotable. Sweeping language is often dicta precisely because it reaches past the facts. The narrower, drier sentence tied to what the parties actually did is usually the one that binds.
The second common error is assuming a case has exactly one holding. An opinion resolving three issues has three holdings. Conversely, a plurality opinion may produce no binding holding on a point at all, which is why concurrences that supply the fifth vote often control.