Eighth Amendment Definition

Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

The Eighth Amendment to the U.
S.
Does the Eighth Amendment apply to the states?
What standard do courts use to define 'cruel and unusual'?

Law & RightsUpdated June 22, 2026

The Eighth Amendment to the U.S. Constitution prohibits excessive bail, excessive fines, and the infliction of cruel and unusual punishments.

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Example

In *Timbs v. Indiana* (2019), the U.S. Supreme Court ruled that Indiana's seizure of Tyson Timbs's $42,000 Land Rover for a low-level drug offense was subject to the Eighth Amendment's Excessive Fines Clause, which applies to the states.

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The Eighth Amendment was ratified on December 15, 1791 as part of the U.S. Bill of Rights. Its text reads in full: "Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted." The language was drawn almost verbatim from the English Bill of Rights of 1689, which used similar wording against the Stuart-era practices of Lord Chief Justice Jeffreys.

The amendment contains three distinct clauses:

Excessive Bail Clause – limits pretrial detention costs. Stack v. Boyle (1951) held that bail set higher than reasonably necessary to ensure a defendant's appearance is "excessive."
Excessive Fines Clause – constrains monetary penalties and forfeitures. In Timbs v. Indiana (2019), the Supreme Court unanimously incorporated this clause against the states via the Fourteenth Amendment.
Cruel and Unusual Punishments Clause – the most litigated portion, governing methods and proportionality of punishment.

Key cruel-and-unusual punishment doctrine has evolved through a series of decisions. Furman v. Georgia (1972) struck down then-existing death penalty statutes as arbitrary; Gregg v. Georgia (1976) permitted reinstatement under guided-discretion schemes. Atkins v. Virginia (2002) barred execution of persons with intellectual disability, and Roper v. Simmons (2005) barred execution of those who were under 18 at the time of the offense. Graham v. Florida (2010) and Miller v. Alabama (2012) restricted life-without-parole sentences for juveniles. The Court applies an "evolving standards of decency" test articulated in Trop v. Dulles (1958).

The amendment is frequently invoked in U.S. domestic litigation over capital punishment, prison conditions, and civil asset forfeiture, and it is often cited in comparative human rights debates alongside Article 5 of the Universal Declaration of Human Rights and Article 7 of the ICCPR, which similarly prohibit cruel, inhuman, or degrading treatment.

Frequently asked questions

Does the Eighth Amendment apply to the states?

Yes. The Supreme Court has incorporated all three clauses against the states through the Fourteenth Amendment's Due Process Clause, most recently the Excessive Fines Clause in Timbs v. Indiana (2019).

Does the Eighth Amendment prohibit the death penalty?

No, not categorically. Gregg v. Georgia (1976) upheld capital punishment in principle, but later cases have barred its use against juveniles, persons with intellectual disability, and for non-homicide crimes against individuals.

What standard do courts use to define 'cruel and unusual'?

Courts apply the 'evolving standards of decency that mark the progress of a maturing society,' a test from Trop v. Dulles (1958), often looking at state legislation and sentencing practice as objective indicators.