What Court Decisions Are Binding in My State?

A court decision is binding in your state when it comes from a court above the one you are in, within the same jurisdiction, on the same issue of law. In practice that means decisions of your state's highest court bind every court in the state, decisions of your state's intermediate appellate court bind the trial courts beneath it (sometimes only within one region), and a decision from another state, or from a federal court on a question of state law, is at most persuasive. The exact rule depends on your state's court structure, so the honest answer to "what is binding here" always starts with which court you are arguing to.

Lawyers lose arguments over this more than over any doctrine. A partner hands an associate a great opinion, the associate drops it in the brief, and opposing counsel points out that it came from a different appellate district, or that it was never published, or that it is a trial-court decision that binds no one. The case was real and the reasoning was sound. It just was not binding, and binding is the only thing that forces a judge's hand.

What does binding precedent mean?

Binding precedent, also called mandatory authority, is a prior decision a court is required to follow under the doctrine of stare decisis. When a case is binding, the judge does not weigh whether it was correct or persuasive. If the facts and the legal question line up, the judge applies it. That is what separates binding authority from everything else you can put in front of a court.

Persuasive authority is a decision a court may consider but is free to reject. Opinions from other states, from lower or coordinate courts, from federal courts on state-law questions, and unpublished opinions in most jurisdictions all fall here. Persuasive authority can still win a case, especially where your own jurisdiction has no decision on point, but it wins by convincing the judge, not by compelling the judge. Knowing which bucket a case sits in tells you how hard you have to argue.

What court decisions are binding in my state?

Three factors decide it: the level of the court that issued the opinion, whether that court sits above yours in the same appellate chain, and whether the opinion was published as precedent. Run any case you want to cite through those three and you will know whether it binds your court or merely persuades it.

• Your state's highest court binds every court in the state. A decision of the state supreme court is the top of the chain, and no state court can decline to follow it on a question of state law.
• Your state's intermediate appellate court binds the trial courts under it. In many states one intermediate court covers the whole state, so its published opinions bind statewide. In others the intermediate court is split into regional districts, and a published opinion binds only the trial courts inside the district that issued it.
• A coordinate or lower court does not bind you. A trial-court opinion, or a decision from a different appellate district, is persuasive only, however well reasoned.
• Federal courts bind state courts only on questions of federal law. On a pure question of your state's law, even a federal court of appeals is persuasive, because the state's own courts are the final word on state law. The federal system has its own hierarchy, laid out in the guide to federal case law search.
• Unpublished opinions usually bind no one, and some states forbid citing them at all. Publication status is a separate gate from court level, and an unpublished decision from a high court can still be non-binding.

Does a court of appeals decision bind the whole state?

Only if the intermediate court is not divided into regional districts. This is the single biggest state-to-state difference and the trap that catches out-of-state practitioners. In a state with one statewide intermediate court, a published appellate opinion is authority everywhere in the state. In a state whose intermediate court is split into districts or departments, a published opinion binds only the trial courts within the district that decided it, and it is merely persuasive in the others.

That is why the same question, is a court of appeals decision binding, has opposite answers depending on where you practice. In New York, a decision of one Appellate Division department binds trial courts statewide until another department disagrees. In Ohio, a court of appeals opinion binds only the trial courts inside its own appellate district, and the twelve districts routinely split. You cannot carry a rule of thumb across state lines; you have to know your own state's structure.

How binding authority works in the largest states

The specifics vary enough that each major state deserves its own reference. Below is a quick map, and each state links to a full guide with the court names, reporters, citation formats, and publication rules for that jurisdiction.

The pattern to take from the table is that "binding" is never a property of the opinion alone. It is a relationship between the opinion and your court. A great Georgia opinion may be only physical precedent; a great New Jersey opinion may be unpublished; a great Ohio opinion may be from the wrong district. The difference between binding and persuasive authority is the frame, and each state fills it in differently.

How do I check whether a case still binds?

Binding status and good-law status are two separate checks, and a case has to pass both. First confirm the case is binding on your court using the court-level and publication rules above. Then confirm it is still good law: that no higher court has reversed or overruled it, that no later decision in your own jurisdiction has limited it, and that the statute it interpreted has not been amended out from under it. A binding case that has been overruled binds nothing, and a perfectly current case from the wrong court never bound you to begin with.

This is where a plain-English research tool earns its keep. The job is not just to find an on-point opinion; it is to find one that both controls your court and remains good law, and to do that fast enough to be worth doing on every issue. Describe your question and your jurisdiction, read the holding, and run the good-law check before you cite. If you are new to a jurisdiction, start from that state's guide above so you are weighing opinions against the right court structure from the first search.

The bottom line

What binds your court is a decision from a higher court in your own jurisdiction, on your issue, that was published as precedent. Everything else, other states, coordinate courts, federal courts on state-law questions, unpublished opinions, is persuasive at most. Because state court structures differ so sharply, especially on whether an intermediate court's opinions bind statewide or only within a district, the reliable move is to learn your own state's map first and check each case against it. Get the binding question right and the rest of the argument has a foundation. Get it wrong and the strongest reasoning in your brief is just an interesting read for the judge.