SentenceCalc

Attempt, conspiracy, helpers and accessories

Not everyone involved in a federal crime committed it. The guidelines sentence people who tried, agreed, helped or covered up in different ways, and some of the differences are much smaller than people assume.

Guidelines Manual effective November 1, 2025Updated October 4, 2026

General information about how the guidelines work, written by web developers, not lawyers. It is not legal advice about any case; see the disclaimer.

How each role is sentenced

RoleOffense levelRule
Aided or abetted the crime (driver, lookout, supplier)Same as the crime itself; a minor role can take 2 to 4 off18 U.S.C. §2, §2X2.1
Attempted it, or conspired, but it was not completed3 levels less, unless every act believed necessary was completed, or it was about to be and was stopped only by arrest or a similar event beyond the person's control§2X1.1(b)
Accessory after the fact (helped hide the person, money or evidence afterward)6 levels below the crime as the person knew it; at least 4, at most 30 (20 if only harboring a fugitive)§2X3.1
Misprision of a felony (actively concealed a known felony)9 levels below; at least 4, at most 19§2X4.1

Some guidelines cover attempts and conspiracies at full value with no discount. Drug trafficking is the most important example: a drug conspiracy is sentenced exactly like a completed sale.

Lying to federal agents to protect someone is its own crime (18 U.S.C. §1001), and lying under oath or tampering with a case falls under the obstruction and perjury guidelines.

Frequently asked questions

Is the getaway driver guilty of the robbery?

Yes. Under 18 U.S.C. §2, anyone who aids or abets a federal crime is punishable as a principal. The driver is sentenced under the robbery guideline, often with a minor-role reduction.

Is it a crime to stay silent about a known crime?

Silence alone is not misprision. Misprision of a felony requires knowing about a federal felony, failing to report it, and taking an affirmative step to conceal it.

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