accessory

accessory definition: how it applies in U.S. law, with examples and frequently asked questions.

An accessory is someone who aided or contributed to the commission or concealment of a crime. There are two categories of accessories: accessory before-the-fact and accessory after-the-fact. Unlike an accomplice, an accessory does not need to have been actually or const…

A guide to accessory

An accessory is someone who aided or contributed to the commission or concealment of a crime. There are two categories of accessories: accessory before-the-fact and accessory after-the-fact. Unlike an accomplice, an accessory does not need to have been actually or constructively present during the commission or concealment of the crime. 

Accessory before-the-fact
An accessory before-the-fact is someone who did anything to encourage, aid, or assist in any material manner in the commission of a crime, thereby participating in the design of the crime. See Johnson v. State, 290 So. 3d 1232 (Miss. 2020).

The basic elements the government must demonstrate to prove that a defendant was an accessory before-the-fact are: (1) someone committed the underlying crime; (2) the defendant advised and agreed, urged the parties, or in some way aided them to commit the offense; and (3) the defendant was not present when the offense was committed. See Evans v. State, 145 So. 3d 674 (Miss. 2014).

The amount of assistance provided is irrelevant, and may also be provided indirectly through a third party. The aid or counsel may be far removed in time from the commission of the crime, although it must be shown to have retained some relationship by causing, encouraging, or assisting the offense.

An accessory before-the-fact is as liable as a principal actor and may be indicted without regard to whether the principal has been convicted. One can be indicted as an accessory before-the-fact even if the accessory does not have the capability to perform the crime.

The primary distinction between an “accessory before-the-fact” and an “aider and abettor” is the actual or constructive presence of the party. If the defendant was actually or constructively present at the offense because of their participation, they are an “aider and abettor.” However, if the defendant was not present, they are an “accessory before-the-fact.”

Accessory after-the-fact
An accessory after-the-fact is someone who, knowing a crime was committed, receives, relieves, comforts, or assists the offender or in any manner aids them to escape arrest or punishment. See: U.S. v. Triplett, 92 F.2d 1174 (5th Cir. 1991). The aid provided by the defendant to the principal must be given after the principal completes the crime. 

The basic elements the government must demonstrate to prove that a defendant was an accessory after-the-fact are: (1) the commission of an underlying crime against the United States; (2) the defendant’s knowledge of that offense; and (3) assistance by the defendant in order to prevent the apprehension, trial, or punishment of the offender. See: Ellis v. U.S., 806 F. Supp. 2d 538 (E.D. N.Y. 2011).

It is not required for the government to prove that the defendant acted willfully and with specific intent to commit the original crime; rather, to convict someone of being an accessory after-the-fact, the government must prove that the defendant had knowledge of the original crime and acted with this knowledge when assisting the principal. If the crime charged is murder and the defendant aided the offender prior to the victim’s death and after the victim’s wound, the defendant cannot be convicted as an accessory after-the-fact to murder.

A defendant may not be convicted of both a crime and of being an accessory after the fact to the same crime. Except as otherwise expressly provided by a Congressional Act, an accessory after-the-fact cannot be imprisoned for more than one-half the maximum term of imprisonment nor fined more than one-half the maximum fine prescribed for the punishment of the principal. If the principal is punishable by life imprisonment or death, the accessory must not be imprisoned for more than 15 years. See: 18 U.S.C. § 3.

Why accessory is relevant in U.S. law

accessory appears in U.S. legal practice across multiple practice areas. Knowing what it means — and when it applies — can determine the outcome of motions, filings, and negotiations. For non-lawyers, the value of looking up a precise definition is that legal terms often carry meanings that differ from everyday usage; relying on the common meaning can lead to costly missteps.

When and how accessory applies

In practice, accessory is invoked when parties, judges, or attorneys need to identify the legal status of an issue, the rights of those involved, or the procedural step required next. The definition shown above is sourced from Cornell LII Wex , which is widely cited in U.S. legal practice. Because U.S. law is jurisdictionally layered — federal, state, and sometimes local — the precise application of the term can vary by court, so check the controlling authority for your specific case.

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Source: Cornell LII Wex CC BY-SA 2.5

This page is provided for general informational purposes only and does not constitute legal advice. Laws change and definitions can vary by jurisdiction. Consult a licensed attorney for advice on your specific situation.

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