Stare Decisis: What It Means and How Precedent Works

Stare decisis is Latin for "to stand by things decided." It is the principle that courts decide a legal question the same way it was decided before, by following precedent. Lower courts must follow the decisions of the higher courts above them, and courts generally follow their own past decisions unless there is a strong reason to change course.

It is why a law student reads cases at all: in common-law systems like the United States, England and India, much of the law is found in judicial decisions, and stare decisis is what gives those decisions force beyond the parties in front of the court.

Why courts follow precedent

The U.S. Supreme Court has explained the reasons this way, in Payne v. Tennessee (1991):

Stare decisis is the preferred course because it promotes the evenhanded, predictable, and consistent development of legal principles, fosters reliance on judicial decisions, and contributes to the actual and perceived integrity of the judicial process.

Justice Brandeis put the practical point more bluntly in a dissent in Burnet v. Coronado Oil & Gas Co. (1932): "Stare decisis is usually the wise policy, because in most matters it is more important that the applicable rule of law be settled than that it be settled right."

Put simply, people plan their lives, businesses and contracts around what the law is. If courts changed their answers every time a new judge disagreed, nobody could rely on the law.

Vertical and horizontal stare decisis

	Vertical	Horizontal
Meaning	A lower court follows the decisions of a higher court in its system	A court follows its own earlier decisions
How strict	Binding: the lower court has no choice	Strong presumption; a court of last resort can overrule itself, but a federal appeals panel is bound by earlier panels unless the full court (en banc) or the Supreme Court changes the rule
Example	A federal district court in New York follows the Second Circuit and the U.S. Supreme Court	The Seventh Circuit follows an earlier Seventh Circuit decision

These examples are adapted from Cornell's Legal Information Institute, which explains that the earlier court "must have binding authority" over the later court; otherwise the earlier decision is merely persuasive.

Binding and persuasive authority

• Binding (mandatory) authority: decisions of higher courts in the same jurisdiction and, for appellate courts, the court's own earlier decisions, on the same legal question. A trial court's decisions do not bind other trial judges.
• Persuasive authority: decisions a court may consider but need not follow, such as decisions of courts in other states, other federal circuits, lower courts, or foreign courts, and dissenting opinions. A well-reasoned persuasive decision can still carry a lot of weight.

Decisions of one state's courts do not bind another state's courts, so a California court is not bound by a New York decision on contract law, though it may find it persuasive. Each state's highest court has the final word on that state's law. On questions of federal law, the U.S. Supreme Court binds every court.

What binds: the holding, not the dicta

Only the part of a decision necessary to decide the case binds later courts. Common-law lawyers call this the holding (in England and India, the ratio decidendi). Everything else, such as comments on situations not before the court, is dicta (obiter dicta), which can be persuasive but does not bind.

Finding the holding is a skill. A court's statement of a broad principle may be read narrowly by later courts if the facts did not require it. This is why law students write case briefs and why the "holding" line of a brief matters most; see our guide on how to brief a case.

Distinguishing a precedent

A court that does not want to follow a precedent, but cannot overrule it, can distinguish it: explain that the facts are different in a way that matters, so the earlier rule does not apply. Much of legal argument consists of one side saying a precedent controls and the other saying it is distinguishable.

When courts overrule a precedent

Stare decisis is not absolute. "Stare decisis is not an inexorable command," the Court said in Payne, and it has repeated the phrase since. In Payne itself the Court overruled, in part, two recent decisions (Booth v. Maryland, 1987, and South Carolina v. Gathers, 1989), and in Brown v. Board of Education (1954) it rejected the "separate but equal" doctrine of Plessy v. Ferguson (1896).

In Dobbs v. Jackson Women's Health Organization (2022), the Court listed the factors it weighed in overruling Roe v. Wade and Planned Parenthood v. Casey: "the nature of their error, the quality of their reasoning, the 'workability' of the rules they imposed on the country, their disruptive effect on other areas of the law, and the absence of concrete reliance." Earlier cases such as Janus v. AFSCME (2018) used a similar list.

Two general points recur in the case law:

• Constitutional cases. Stare decisis is applied less strictly in constitutional cases, because a wrong constitutional decision can only otherwise be fixed by constitutional amendment, whereas Congress can fix a wrong reading of a statute.
• Statutory cases. For the same reason, the Court gives its readings of statutes especially strong stare decisis effect: if the Court got the statute wrong, Congress can change it.

Only the court that made a precedent, or a higher court, can overrule it. A trial court that thinks a higher court's decision is wrong must still follow it.

Worked examples

Example 1: the trial judge who disagrees

A federal district judge in Chicago believes a Seventh Circuit decision interpreting a federal statute is badly reasoned. She must follow it anyway: vertical stare decisis is binding. She can write an opinion explaining her disagreement, hoping the Seventh Circuit or the Supreme Court will revisit the question on appeal.

Example 2: the out-of-state case

In a Texas negligence case, a lawyer cites a California Supreme Court decision on exactly the same issue. The Texas court is not bound by it, but may find its reasoning persuasive, especially if Texas courts have not decided the question.

Example 3: the passing comment

An appellate court decides that a landlord owed a duty to repair a broken stair, and adds that "of course, a landlord would also owe a duty to install security cameras." The second statement was not needed to decide the case. It is dicta, and a later court considering security cameras is free to disagree.

How it shows up in class and on exams

• Identify the court hierarchy before deciding whether a case is binding.
• Separate holding from dicta. Professors often ask what a case "actually held."
• Argue both ways. One side says a precedent controls; the other distinguishes it on the facts.
• Know the overruling factors for constitutional law courses (Dobbs, Janus).
• Use persuasive authority when there is no binding precedent, and explain why its reasoning should be adopted.

How England and India apply it

England developed the doctrine and applied it strictly for a long time. Until 1966 the House of Lords considered itself bound by its own decisions. In the Practice Statement of 26 July 1966, Lord Gardiner announced that the Lords would treat former decisions as normally binding but would "depart from a previous decision when it appears right to do so." The UK Supreme Court, which took over the House of Lords' judicial role in 2009, applies the same Practice Statement (Austin v. Southwark LBC [2010] UKSC 28).

India writes vertical stare decisis into its Constitution. Article 141 provides: "The law declared by the Supreme Court shall be binding on all courts within the territory of India." The Supreme Court is not bound by its own earlier decisions, but in practice only a larger bench can overrule an earlier one; a bench of equal or smaller size must refer the question to a larger bench.

Related reading

• How to brief a case
• Difference between civil law and criminal law
• Mens rea and actus reus

Sources

• Payne v. Tennessee, 501 U.S. 808 (1991)
• Burnet v. Coronado Oil & Gas Co., 285 U.S. 393, 406 (1932) (Brandeis, J., dissenting), as quoted in Constitution Annotated, "Stare Decisis Doctrine Generally" (Congress.gov)
• Dobbs v. Jackson Women's Health Organization, 597 U.S. 215 (2022)
• Cornell LII, Wex: stare decisis
• House of Lords, Practice Statement (Judicial Precedent), 26 July 1966
• Constitution of India, Article 141