Federal Cooperation Sentence Reduction Overview

Name: Federal Prison Sentence Calculator
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How substantial assistance reductions work in federal court: who can file a motion, the difference between U.S.S.G. § 5K1.1 before sentencing and Rule 35(b) after, the timing rules, and what actually influences the size of a reduction.

Key points

Only the government can move for a substantial assistance reduction.
§ 5K1.1 applies at sentencing; Rule 35(b) applies afterward, generally within one year.
The court decides the amount; there is no guaranteed percentage.
Cooperation does not change Good Conduct Time or First Step Act eligibility on its own.

Federal Sentence Help is an educational resource and is not a law firm. Projections are estimates; actual dates are determined by the Bureau of Prisons. More resources at federalsentencehelp.org.