RDAP Calculator

Estimate the impact of the Residential Drug Abuse Program's up-to-12-month sentence reduction under 18 U.S.C. § 3621(e).

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Federal or state case?

Federal sentencing uses the USSG points table. State cases use each state's own grid, points, or offense-class system.

How the § 3621(e) reduction scales

BOP has discretion within those caps. Reductions apply only after successful completion of the entire program, including the community-based transitional component.

Statutory & regulatory sources

Related tools

Frequently asked questions

How much time can RDAP take off a federal sentence?

Under 18 U.S.C. § 3621(e)(2)(B), the Bureau of Prisons may reduce an eligible nonviolent inmate's sentence by up to 12 months after successful completion of RDAP. Actual reductions are scaled by sentence length — up to 6 months for sentences of 30 months or less, up to 9 months for 31–36 months, and up to 12 months for longer sentences.

Who is eligible for RDAP?

You need a verifiable substance-use disorder diagnosis within the 12 months before arrest, no offense of violence, no prior conviction for homicide/sexual assault/child abuse, no INS detainer, and enough time left to complete the 500-hour program plus community transition. BOP Psychology Services makes the diagnostic determination.

What offenses disqualify someone from the RDAP § 3621(e) reduction?

The § 3621(e) reduction is unavailable to inmates whose current offense is a felony that involved actual or threatened violence, possession/use of a firearm or dangerous weapon, sexual abuse of a minor, or that BOP categorically excludes by regulation (28 C.F.R. § 550.55).

What does RDAP actually involve?

RDAP is a 500-hour, 9-to-12-month unit-based cognitive-behavioral treatment program run inside designated BOP facilities, followed by transitional drug abuse treatment (TDAT) in an RRC or on home confinement. Participants live together in a treatment unit and complete daily programming.

Does RDAP stack with FSA credits and Good Time?

Yes. RDAP's up-to-12-month § 3621(e) reduction is separate from Good Conduct Time under § 3624(b) and from First Step Act earned time credits under § 3632. Eligible inmates can benefit from all three.

Educational estimate only — not legal advice. See Terms & Sources.