How many justices must agree to make a Supreme Court decision?

A Supreme Court decision requires a majority of the justices to agree for a decision to be made. Since there are nine justices on the Court, this means that at least five justices must concur in order to establish a ruling. This majority rule is fundamental to the functioning of the Supreme Court, as it ensures that decisions reflect the collective judgment of a group rather than requiring total consensus.

The concept of a majority emphasizes the importance of diverse opinions, allowing for a range of interpretations of the law while providing a decisive outcome. In cases where the justices are divided, the majority opinion will dictate the final ruling, while dissenting opinions can provide alternative perspectives on the issue at hand.