First instance

A trial court or court of first instance is a court having original jurisdiction, in which trials takes place.

A trial court of general jurisdiction is authorized to hear any type of civil or criminal case that is not committed exclusively to another court. In the United States, the United States district courts are the trial courts of general jurisdiction of the federal judiciary; each U.S. state has a state court system establishing trial courts of general jurisdiction, such as the Florida Circuit Courts in Florida, the Superior Courts of California in California, and the New York Supreme Court in New York.

Not all cases are heard in trial courts of general jurisdiction. A trial court of limited jurisdiction is authorized to hear only specified types of cases. Trial courts of limited jurisdiction may be limited in subject-matter jurisdiction (such as juvenile, probate, and family courts in many U.S. states, or the United States Tax Court in the federal judiciary) or by other means, such as small claims courts in many states for civil cases with a low amount in controversy. Other trials do not take place in courts at all, but in quasi-judicial bodies or in administrative agencies with adjudicatory power created by statute to make binding determinations with simplified procedural practices, such as arbitration.