Supreme Court justices serve for life , meaning they keep their seats as long as they choose, unless they die, retire, resign, or are removed through impeachment and conviction.

Basic rule in the Constitution

  • The U.S. Constitution says justices “hold their Offices during good Behaviour,” which has been interpreted as a lifetime appointment rather than a fixed term.
  • There is no mandatory retirement age and no built‑in term limit in current federal law for Supreme Court justices.

What happens in practice

  • Even though the term is “for life,” many justices choose to retire once they reach an advanced age or face health issues.
  • Historically, justices have served anywhere from less than a year to well over 30 years, and in recent decades typical tenures have stretched into multiple decades.

Recent debate and proposals

  • Because modern justices often serve 25–30+ years, many scholars and advocacy groups now push for term limits (commonly around 18 years) to regularize turnover and reduce political tension around each vacancy.
  • These ideas are still just proposals; implementing binding term limits would almost certainly require new federal legislation and very likely a constitutional amendment, which has not happened yet.

TL;DR: When people ask “how long do Supreme Court justices serve?” the accurate legal answer today is: they serve for life, subject only to voluntary departure or impeachment.

Information gathered from public forums or data available on the internet and portrayed here.