How much time does RDAP take off a sentence?
Up to twelve months, and only for some people. 18 U.S.C. § 3621(e)(2)(B) says the period in custody “may be reduced by the Bureau of Prisons, but such reduction may not be more than one year,” and only for a prisoner “convicted of a nonviolent offense.” Bureau policy scales the maximum by sentence length: no more than six months on a sentence of 30 months or less.
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Key takeaways on RDAP early release
- The reduction is discretionary and capped. The Supreme Court held in Lopez v. Davis, 531 U.S. 230 (2001), that the Bureau “has the authority, but not the duty” to reduce a sentence under § 3621(e)(2)(B).
- BOP policy sets a sliding scale: 30 months or less → no more than 6 months; 31–36 months → no more than 9 months; 37 months or more → no more than 12 months.
- Eligibility to complete RDAP and eligibility for the reduction are two different questions with two different rule sets — 28 C.F.R. § 550.53 and § 550.55.
- The Director’s discretionary exclusions at § 550.55(b) are broad and offense-based, and Lopez upheld exactly that approach.
- The reduction does not vest on finishing the unit-based program. It requires completing community treatment, and BOP policy preserves a minimum 120-day community-based placement for that purpose.
- RDAP and first step act time credits stack, in a defined order: good conduct time first, then § 3621(e), then time credits.
What the statute says
18 U.S.C. § 3621(e)(2), quoted:
“(A) Generally.— Any prisoner who, in the judgment of the Director of the Bureau of Prisons, has successfully completed a program of residential substance abuse treatment provided under paragraph (1) of this subsection, shall remain in the custody of the Bureau under such conditions as the Bureau deems appropriate…
(B) Period of custody.— The period a prisoner convicted of a nonviolent offense remains in custody after successfully completing a treatment program may be reduced by the Bureau of Prisons, but such reduction may not be more than one year from the term the prisoner must otherwise serve.”
Four words carry the whole provision.
“May be reduced.” Permissive. In Lopez v. Davis, the Supreme Court contrasted that word with the mandatory “shall” used elsewhere in the same section, noting that “Congress’ use of the permissive ‘may’ in § 3621(e)(2)(B) contrasts with the legislators’ use of a mandatory ‘shall’ in the very same section,” and concluding that “the Bureau thus has the authority, but not the duty… to reduce his term of imprisonment.”
“May not be more than one year.” A ceiling, not a quantity.
“Convicted of a nonviolent offense.” A threshold that has generated more litigation than any other phrase in the subsection.
“In the judgment of the Director… has successfully completed.” Completion is itself a Bureau determination.
The related duty in § 3621(e)(1) is real but qualified: the Bureau “shall, subject to the availability of appropriations, provide residential substance abuse treatment (and make arrangements for appropriate aftercare)” for all eligible prisoners, “with priority for such treatment accorded based on an eligible prisoner’s proximity to release date.”
At a glance: the § 3621(e) reduction, stated accurately
RDAP and the § 3621(e) sentence reduction — what is required and what is capped
| Question | The answer | Source |
|---|---|---|
| Is the reduction automatic? | No. It “may be reduced” — the Bureau “has the authority, but not the duty” | 18 U.S.C. § 3621(e)(2)(B); Lopez v. Davis, 531 U.S. 230, 241 (2001) |
| What is the maximum? | “not more than one year from the term the prisoner must otherwise serve” | 18 U.S.C. § 3621(e)(2)(B) |
| Is the maximum available to everyone eligible? | No — it scales with sentence length: 30 months or less → no more than 6 months; 31–36 months → no more than 9 months; 37 months or more → no more than 12 months. Not pro-rated by days | BOP PS 5331.02 § 11 — agency policy, not law |
| What must be completed? | All three RDAP components: the unit-based component (at least six months), follow-up treatment where time allows, and Community Treatment Services | 28 C.F.R. § 550.53(a) |
| What must the offense be? | A “nonviolent offense,” and the person must be sentenced under 18 U.S.C. ch. 227, subch. D or D.C. Code § 24-403.01 | 28 C.F.R. § 550.55(a)(1) |
| What is the admission requirement? | A verifiable substance use disorder, a signed agreement of program responsibility, and the ability to complete all three components when beginning | 28 C.F.R. § 550.53(b) |
| Is there a financial condition? | Yes. Eligible inmates must be “Financial Responsibility Program (FRP) compliant,” and no RDAP incentive may be received without meeting FRP and GED obligations | BOP PS 5331.02 § 4(4); 28 C.F.R. § 550.54(b) |
| Who decides eligibility? | The Drug Abuse Program Coordinator screens; DSCC legal staff conduct the offense review, ordinarily within 30 working days, and the sign-off “may not be delegated below the attorney level” | BOP PS 5331.02 §§ 6, 8 |
| What decides whether the offense disqualifies? | For U.S. Code offenses, the Program Statement Categorization of Offenses — currently PS 5162.07 (3 September 2026). For D.C. Code offenses, D.C. Code § 23-1331(4) | BOP PS 5331.02 § 6(a); PS 5162.07 |
| When does the reduction become real? | Only on certification after community treatment. The unit team completes a Unit Team Final Review ordinarily 30 days before RRC transfer; the release date runs as “§ 3621(e) conditional” until then | BOP PS 5331.02 §§ 10, 12(a)(9), 13 |
| How does it interact with FSA credits? | The § 3621(e) benefit “will be applied first… followed by the application of FTCs,” and FTC days are reduced if needed to preserve “at a minimum, the 120-day community-based placement” | BOP PS 5410.01 CN-2 |
BOP Program Statements are internal agency policy, not law.
That sliding scale is worth reading twice, because it is where most people’s expectations break. A person serving 30 months who completes every component perfectly is eligible for a reduction of no more than six months — not twelve. And the policy is explicit that the brackets are hard edges: “The early release time-frame reductions shown on the table are not pro-rated by days. For example, if an inmate’s sentence is 36 months and any number of days, 9 months is the maximum sentence reduction allowed, whether the inmate’s sentence is 36 months and 0 days, or 36 months and 30 days.”
The scale also moves with the sentence. “Any change in current offense sentence length as imposed by order of the Court will result in a recalculation of sentence computation and provisional incentive. For example, a 36-month sentence reduced to a 24-month sentence will result in no more than a 6-month early release.” A successful sentence reduction can therefore shrink the RDAP benefit — a trade-off worth understanding before pursuing one.
Who is eligible to enter RDAP
Two different questions live under the word “eligible,” and conflating them is the most common error we see.
Admission to the program — 28 C.F.R. § 550.53
Section 550.53(b) sets three admission criteria and no more:
“(1) Inmates must have a verifiable substance use disorder. (2) Inmates must sign an agreement acknowledging program responsibility. (3) When beginning the program, the inmate must be able to complete all three components described in paragraph (a) of this section.”
The three components in paragraph (a) are:
“(1) Unit-based component. Inmates must complete a course of activities provided by the Psychology Services Department in a treatment unit set apart from the general prison population. This component must last at least six months.
(2) Follow-up services. If time allows between completion of the unit-based component of the RDAP and transfer to a community-based program, inmates must participate in the follow-up services…
(3) Community Treatment Services (CTS). Inmates who have completed the unit-based program and (when appropriate) the follow-up treatment and transferred to a community-based program must complete CTS to have successfully completed RDAP and receive incentives.”
The third component is the one that decides cases. RDAP is not finished when a person walks out of the treatment unit. It is finished after community treatment, which is why the Bureau protects a minimum community placement window in its time-credit policy and why a removal from a residential reentry center can cost the whole benefit.
Placement decisions belong to the Drug Abuse Program Coordinator: “The Drug Abuse Program Coordinator decides whether to place inmates in RDAP based on the criteria set forth in paragraph (b) of this section.”
The program’s own operating detail — hours, curriculum, unit structure, the psychology-services requirements — sits in BOP Program Statement 5330.11, Psychology Treatment Programs, CN-1, dated 26 May 2016, listed as current on BOP’s policy index.
Eligibility for the reduction — 28 C.F.R. § 550.55
Completing RDAP and qualifying for the § 3621(e) reduction are separate. Section 550.55(a):
“Inmates may be eligible for early release by a period not to exceed twelve months if they: (1) Were sentenced to a term of imprisonment under either: (i) 18 U.S.C. Chapter 227, Subchapter D for a nonviolent offense; or (ii) D.C. Code § 24-403.01 for a nonviolent offense, meaning an offense other than those included within the definition of ‘crime of violence’ in D.C. Code § 23-1331(4); and (2) Successfully complete a RDAP, as described in § 550.53, during their current commitment.”
BOP policy adds two conditions the regulation does not state expressly. PS 5331.02 § 4 requires that the inmate “have a diagnosis for a substance use disorder. The inmate must have a substantiated diagnosis for a substance use disorder,” and that they “are Financial Responsibility Program (FRP) compliant. See 28 CFR § 545.10.” It also defines successful completion for reduction purposes as: completion of the unit-based RDAP; “when applicable, participation in follow-up treatment while in general population for 12 months or until release, whichever comes first”; and “completion of community Transition Drug Abuse Treatment (TDAT) while residing in a Residential Reentry Center (RRC) or on home confinement.”
The § 550.55(b) exclusions
The regulation calls these what they are: “As an exercise of the Director’s discretion, the following categories of inmates are not eligible for early release.” They are not statutory disqualifications. They are the Bureau choosing, categorically, not to exercise a power it has — which is precisely what Lopez v. Davis held it may do.
28 C.F.R. § 550.55(b) — the Director’s discretionary exclusions from § 3621(e) early release
| # | Category | Detail from the regulation |
|---|---|---|
| (b)(1) | Immigration and Customs Enforcement detainees | — |
| (b)(2) | Pretrial inmates | — |
| (b)(3) | Contractual boarders | “for example, State or military inmates” |
| (b)(4) | A prior felony or misdemeanor conviction within the ten years prior to the date of sentencing for the current commitment | Homicide “(including deaths caused by recklessness, but not including deaths caused by negligence or justifiable homicide)”; forcible rape; robbery; aggravated assault; arson; kidnaping; or “[a]n offense that by its nature or conduct involves sexual abuse offenses committed upon minors” |
| (b)(5) | A current felony conviction for | an offense “that has as an element, the actual, attempted, or threatened use of physical force against the person or property of another”; one “that involved the carrying, possession, or use of a firearm or other dangerous weapon or explosives”; one “that, by its nature or conduct, presents a serious potential risk of physical force against the person or property of another”; or one “that, by its nature or conduct, involves sexual abuse offenses committed upon minors” |
| (b)(6) | Attempt, conspiracy, or solicitation to commit an underlying (b)(4) or (b)(5) offense | — |
| (b)(7) | Anyone who previously received an early release under 18 U.S.C. § 3621(e) | Once only |
Source: 28 C.F.R. § 550.55(b).
Two of these decide most files.
The firearm exclusion at (b)(5)(ii) is the one that catches people who do not think of themselves as violent offenders. A drug conviction with a firearm enhancement sits squarely inside it. That is the exact fact pattern of Lopez, where the Supreme Court upheld the Bureau’s categorical denial to “prisoners whose current offense is a felony attended by ‘the carrying, possession, or use of a firearm,'” reasoning that “[t]he Bureau reasonably concluded that an inmate’s prior involvement with firearms, in connection with the commission of a felony, suggests his readiness to resort to life-endangering violence.”
The ten-year prior-conviction window at (b)(4) is measured backward from the date of sentencing on the current commitment, not from the offense date and not from today. It is a checkable date, and it is sometimes checked wrong.
How the exclusion is actually decided
This is the procedural detail that lets a family understand where a case is, and it comes from PS 5331.02.
First, a screening review by the Drug Abuse Program Coordinator. The DAPC checks SENTRY for prior § 3621(e) releases, contract boarder status, pretrial status, a detainer “that will prohibit completion of the community treatment component of the RDAP,” a federal offense before 1 November 1987, or a D.C. offense before 5 August 2000. If any applies, “the inmate is NOT ELIGIBLE for a § 3621(e) early release and no further review is required,” and the DAPC meets with the inmate, has them sign a Notice of RDAP Qualification (BP-A0941), and enters the assignment into SENTRY.
Second, an offense review by DSCC legal staff. If the screen does not exclude, the DAPC submits a Request for § 3621(e) Offense Review with the Judgment and Commitment order and the Presentence Investigation Report. “[T]he DSCC legal staff will ordinarily have 30 working days to determine an inmate’s early release eligibility status based on a review of the inmate’s current offense and prior convictions.”
For U.S. Code offenses, “DSCC legal staff will refer to the Program Statement Categorization of Offenses to determine whether an offense precludes early release under § 3621(e).” That instrument was reissued as PS 5162.06 on 19 March 2026, superseding the 2009 version, and again as PS 5162.07 on 3 September 2026. For D.C. Code offenses, staff refer to D.C. Code § 23-1331(4).
And the sign-off is restricted: “After completing the offense review, a legal staff member will complete and sign the Request for § 3621(e) Offense Review form. Signature authority may not be delegated below the attorney level.”
That last sentence is useful. An eligibility determination in this system is made by an attorney at the Designation and Sentence Computation Center, on documents, against a published offense-categorisation policy. It is a legal determination, and it is one an outside reader can examine.
Applied Insight — Christopher Zoukis, JD, MBA, Managing Director: The two documents that decide RDAP are the Judgment and Commitment order and the presentence report. The J&C fixes the offense of conviction and the enhancements; the PSR is where a substance use history is either recorded or absent. Bureau policy requires the DAPC to forward both to DSCC for the offense review. A person with a genuine, long-standing substance use history whose PSR does not document it is starting the RDAP conversation from a far worse position than someone whose PSR does — and by the time they reach the institution, that document is very difficult to change. This is the single strongest reason to treat the presentence interview as a matter with consequences years downstream, and it belongs to the work a federal sentence mitigation attorney does before sentencing, not to the work a case manager does after.
Removal from RDAP, and what it costs
28 C.F.R. § 550.53(g) governs expulsion:
“(1) Inmates may be removed from the program by the Drug Abuse Program Coordinator because of disruptive behavior related to the program or unsatisfactory progress in treatment.
(2) Ordinarily, inmates must be given at least one formal warning before removal from RDAP. A formal warning is not necessary when the documented lack of compliance with program standards is of such magnitude that an inmate’s continued presence would create an immediate and ongoing problem for staff and other inmates.
(3) We may return an inmate who withdraws or is removed from RDAP to his/her prior institution (if we had transferred the inmate specifically to participate in RDAP).”
The formal-warning requirement is a real procedural protection and it is worth knowing about. “Ordinarily” is doing work, and the exception is narrow and requires documented conduct of a particular magnitude.
Incentives can go too. 28 C.F.R. § 550.54(c): “If an inmate withdraws from or is otherwise removed from RDAP, that inmate may lose incentives he/she previously achieved.”
PS 5331.02 sets out what happens administratively. Expulsion or withdrawal — including for “an incident report for misconduct related to drugs, alcohol, and/or act(s) of violence” — triggers a Change in RDAP and § 3621(e) Status form (BP-A0767) to the Correctional Systems Department, the unit team, and DSCC, and the SENTRY assignments flip from eligible to ineligible.
There is a route back, and it is specific. Where an eligible inmate is expelled on an incident report and “is later found not guilty by the DHO,” the policy directs the DAPC to “conduct a meeting with all treatment staff to determine if the inmate, based on sound clinical practice and the good of the treatment community, is clinically appropriate to be placed back into the program,” and if so to reinstate the inmate, reverse the SENTRY assignments, and forward a Notice of § 3621(e) Date form to restore the release date. The same reinstatement route exists where an incident report is later expunged.
Expungements do not always propagate on their own. If a DHO finding that cost a § 3621(e) date was later reversed, that is a discrete thing to check and, if necessary, to raise through the bop sentence computation channels.
Loss of a § 3621(e) date is also possible in the community. The Transitional Drug Abuse Treatment Coordinator initiates “all recommendations for changes in an inmate’s early release date,” including for treatment issues, escapes from the RRC, RRC failures, and disallowance of good conduct time by the Discipline Hearing Officer.
The conditional date, and when it becomes real
A § 3621(e) date is provisional for most of its life, and understanding that prevents a great deal of distress.
Once a qualified inmate enters RDAP, the DAPC forwards a Notice of § 3621(e) Date (BP-A0764) to DSCC within 15 working days, and DSCC enters an estimated completion date and recalculates the sentence, with “the corresponding satisfaction/release method [being] § 3621(e) COND (§ 3621E Conditional).”
Conditional. It becomes a release date only after two further steps.
The Unit Team Final Review. Before transfer to an RRC, “the Unit Team will complete the Unit Team Final Review form (BP-A0766). Ordinarily, this will occur 30 days before the inmate’s RRC transfer.” The review confirms that the inmate “has completed all components of the unit-based RDAP, in a unit set apart from the general population for no less than nine months,” and has completed the follow-up component. The policy is blunt about the effect of a failed check: “If any SENTRY codes have been replaced with fail or ineligible codes, the inmate is not eligible for an early release.”
Certification after community treatment. “Upon an inmate’s completion of TDAT, the T-DATC must certify to the DSCC that the inmate has completed all requirements of RDAP,” on a Transitional Drug Abuse Treatment § 3621(e) Release Date Confirmation form (BP-A0910).
Two figures to hold together: the regulation requires the unit-based component to “last at least six months”; the Unit Team Final Review checks for no less than nine months in the treatment unit. Both are Bureau requirements and both apply.
The community phase, and who controls it
Most of what is written about RDAP stops at the institution door. The last phase is where the § 3621(e) reduction is actually earned, and it runs on a different set of people.
Transitional Drug Abuse Treatment. PS 5331.02 defines successful completion for reduction purposes as including “completion of community Transition Drug Abuse Treatment (TDAT) while residing in a Residential Reentry Center (RRC) or on home confinement.” That is the third component the regulation calls Community Treatment Services, and the Bureau’s separate program statement on the subject is PS 7430.03, Community Treatment Services, reissued 7 May 2026 — agency policy, not law.
The T-DATC holds the pen. The Transitional Drug Abuse Treatment Coordinator “monitors the inmate’s treatment” once a person is in community-based treatment, and — critically — “all recommendations for changes in an inmate’s early release date must be initiated by the T-DATC.” That includes “delays or removal of early release for treatment related issues, escapes from the RRC, RRC failures, disallowance of Good Conduct Time by the Discipline Hearing Officer.” The T-DATC also “is responsible for reviewing all requests to delay or remove an inmate’s early release date,” and approves or disapproves them.
And the T-DATC certifies the release. “Upon an inmate’s completion of TDAT, the T-DATC must certify to the DSCC that the inmate has completed all requirements of RDAP. This certification assures the inmate has successfully completed all of the requirements that earn him or her an early release.”
So the § 3621(e) date is provisional through the whole community phase and becomes real only on a certification signed by a coordinator most families have never heard of. Anyone whose date changes in the last months should be asking specifically what the T-DATC filed and when.
Delay is not the same as removal. The regulation contemplates adjustment rather than forfeiture: 28 C.F.R. § 550.55(c)(3) provides that “[i]f inmates cannot fulfill their community-based treatment obligations by the presumptive release date, we may adjust provisional release dates by the least amount of time necessary to allow inmates to fulfill their treatment obligations.” PS 5331.02 adds that “[i]n practice, it is the T-DATC who adjusts all provisional release dates.” Where a community program could not be completed on time for reasons outside the person’s control, “the least amount of time necessary” is the standard being applied — and it is a standard, not a discretion at large.
Placement length interacts with all of this. PS 7310.04 — agency policy, not law, dated 16 December 1998 — provides that people who complete the institutional phase “should normally be considered for the maximum 180 day period of CCC placement, if they are otherwise eligible,” and that the Community Corrections Manager “shall attempt to affect the 180 day release preparation placement for inmates releasing via 3621E CMPL.” Read the operative word as maximum: that program statement predates the Second Chance Act, and the ceiling on halfway-house placement today is the twelve months authorized by 18 U.S.C. § 3624(c)(1), extendable further by First Step Act credits under § 3624(g). What the 1998 language still establishes is the priority — RDAP completers are to be considered for the longest placement available to them. A community placement too short to accommodate TDAT is a problem to raise before the referral goes out, not after — see residential reentry center.
The monitoring cycle inside the institution
Eligibility is not decided once. PS 5331.02 requires the Drug Abuse Program Coordinator to “review all eligible inmate DRG assignments bi-monthly and prior to the inmate receiving a DAP COMP or FOL COMP SENTRY assignment,” and sets out what happens at each transition — completion of the unit-based component, additional completion time for clinical or administrative reasons, a change from ineligible to eligible (for example, “detainer dropped, court case resolved”), expulsion, failure of follow-up treatment, and any later change after all institution components are complete.
Two of those are worth watching. A change from ineligible to eligible is expressly contemplated — if a detainer is dropped or a pending case resolves, the DAPC is directed to review the file again and, if no other exclusion applies, “immediately replace the SENTRY DRG assignment of INELIGIBLE to ELIGIBLE” and request the corresponding date. That does not always happen on its own. And failure of the follow-up component after the unit-based program is complete flips the assignment “of DAP completion to DAP failure, final outcome” — a late and expensive loss that the bi-monthly review exists to catch early.
How RDAP fits with the other early-release routes
The order of operations is set by policy, and it is not arbitrary.
Good conduct time first. BOP’s First Step Act FAQ: “an inmate’s projected release date will first be adjusted due to application of the Good Conduct Time changes. The BOP will review inmates participating in RDAP to determine the amount of sentence reduction that would be appropriate.”
Then § 3621(e). Then First Step Act credits. PS 5410.01 CN-2: “The 3621(e) benefit will be applied first to the inmate’s sentence computation, followed by the application of FTCs, however, an inmate must have sufficient time remaining to serve to complete all required components of the RDAP program (i.e., 120-day community-based treatment).”
And the credits yield where they would crowd out treatment. “In the event an inmate has insufficient time remaining to serve after completing the RDAP program to receive both the early release benefit under 3621(e) and the full 365 days toward early release of earned FTCs, the number of FTC days applied will be reduced to allow for, at a minimum, the 120-day community-based placement as required under 3621(e).”
That is a genuinely counter-intuitive rule and it catches people out. Someone with a large time-credit balance and an RDAP benefit does not simply add them. The Bureau will trim the credits rather than let them eliminate the community treatment window the § 3621(e) reduction depends on.
Two further interactions:
RDAP moves the PATTERN score. On BOP’s published male PATTERN v1.3 scoring form, the drug program status item scores −4 on the general tool for RDAP completion, against −2 for a non-residential program. That matters because pattern risk assessment level is the gate on applying time credits at all.
RDAP graduates get the maximum halfway-house consideration. PS 7310.04 — agency policy, not law — provides that inmates who successfully complete the institutional phase “should normally be considered for the maximum 180 day period of CCC placement, if they are otherwise eligible,” and that the Community Corrections Manager “shall attempt to affect the 180 day release preparation placement for inmates releasing via 3621E CMPL.” That 180-day figure is the 1998 policy’s own maximum, written before the Second Chance Act raised the statutory ceiling to twelve months under § 3624(c)(1); what survives is the instruction that RDAP completers be considered for the longest placement they can get.
The Bureau’s own FAQ also confirms that the First Step Act did not change the program itself: “The BOP’s RDAP was not changed by the FSA.”
The incentives beyond early release
Not everyone who completes RDAP gets a sentence reduction. 28 C.F.R. § 550.54 sets out what else is available:
Basic incentives — “(i) Limited financial awards, based upon the inmate’s achievement/completion of program phases. (ii) Consideration for the maximum period of time in a community-based treatment program, if the inmate is otherwise eligible. (iii) Local institution incentives such as preferred living quarters or special recognition privileges. (iv) Early release, if eligible under § 550.55.”
Enhanced incentives — tangible achievement awards permitted by the Warden, photographs of treatment ceremonies sent to family, and “[f]ormal consideration for a nearer release transfer for medium and low security inmates.”
The second basic incentive is the one people overlook. Someone excluded from the § 3621(e) reduction by an offense-based exclusion is still entitled to consideration for the maximum community-based treatment time — which, combined with the PS 7310.04 priority above and the twelve-month ceiling in § 3624(c)(1), is not a small thing.
And the gate on all of it: “An inmate must meet his/her financial program responsibility obligations (see 28 CFR part 545) and GED responsibilities (see 28 CFR part 544) before being able to receive an incentive for his/her RDAP participation.”
Applied Insight — Elizabeth Franklin-Best, Esq., Principal Attorney: Lopez v. Davis is the reason a challenge to an RDAP exclusion has to be built narrowly. The Supreme Court held that the Bureau may exclude categorically, may look at pre-conviction conduct, and is not obliged to reduce anyone’s sentence at all. Add 18 U.S.C. § 3625, which removes Administrative Procedure Act review of individual determinations under this subchapter, and an argument that the exclusion was unfair has nowhere to go. What does have somewhere to go is a factual error: a prior conviction outside the ten-year window at § 550.55(b)(4); an offense miscategorised under the Categorization of Offenses program statement; a firearm enhancement in the record that the judgment does not actually support; an expunged incident report that never propagated. Those are documentary claims, and they are the ones worth taking through the administrative remedy process.
If eligibility is denied
The route is the administrative remedy program at 28 C.F.R. Part 542: informal resolution and a BP-9 to the Warden within 20 calendar days of the event under § 542.14; a BP-10 to the Regional Director within 20 days of the Warden’s signed response; a BP-11 to the General Counsel within 30 days of the Regional Director’s, under § 542.15. If nobody responds within the allotted time including any extension, § 542.18 permits treating the silence as a denial.
After exhaustion, the vehicle is a petition under 28 U.S.C. § 2241 in the district of confinement. Our bop sentence computation page covers the whole sequence.
Timing is critical, because an RDAP claim has a short useful life. The program itself takes the better part of a year, community treatment follows, and a claim resolved after the release date is worth nothing. Raise the eligibility determination when it is made, not when the date arrives.
Working with a federal prison early release lawyer
RDAP work is documentary. We review the judgment and the presentence report against the exclusions at § 550.55(b) and the current Categorization of Offenses policy; we check the ten-year prior-conviction window against actual sentencing dates; we look for expunged incident reports that never propagated; and we pursue administrative remedies where the determination rests on a factual error rather than a judgment call.
Elizabeth Franklin-Best, P.C. is a boutique federal criminal defense and appellate firm founded in 2019, with offices in Columbia and Mount Pleasant, South Carolina, serving clients nationwide on an intentionally small caseload. Elizabeth Franklin-Best is admitted to the U.S. Supreme Court and twelve of the thirteen U.S. Courts of Appeals — every regional circuit (1st–11th) plus the D.C. Circuit. Christopher Zoukis, JD, MBA, leads the firm’s federal prison consulting work and is the author of the Federal Prison Handbook.
The reduction is discretionary, and the Supreme Court has said so. We will not promise you twelve months, or six.
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If an RDAP eligibility determination looks wrong, or a § 3621(e) date has been lost on a finding that was later reversed, we can review the record.
Schedule a consultation with Elizabeth Franklin-Best, P.C. Our practice is nationwide.
For the full map of routes out, start at our federal prison early release lawyer hub. For what the program is actually like, see residential drug abuse program. For the credits that layer on top, first step act time credits and good conduct time. For where the community phase happens, residential reentry center and federal home confinement, and for the statutory basis of that placement, second chance act. For what comes after, early termination of supervised release.
Frequently Asked Questions About RDAP
What is RDAP?
RDAP is the Bureau of Prisons’ Residential Drug Abuse Program. Under 28 C.F.R. § 550.53 it has three components: a unit-based component in a treatment unit set apart from the general population lasting “at least six months,” follow-up services where time allows, and Community Treatment Services after transfer to a community-based program. All three must be completed.
Who qualifies for RDAP?
Admission requires only three things under 28 C.F.R. § 550.53(b): a verifiable substance use disorder, a signed agreement acknowledging program responsibility, and the ability to complete all three components. Qualifying for the sentence reduction is separate and much narrower — § 550.55 requires a nonviolent offense and excludes seven categories at the Director’s discretion.
How much time does RDAP take off a sentence?
18 U.S.C. § 3621(e)(2)(B) caps the reduction at “not more than one year,” and makes it discretionary. BOP policy scales the maximum by sentence length: no more than 6 months for a sentence of 30 months or less, 9 months for 31–36 months, and 12 months for 37 months or more. The brackets are not pro-rated by days.
What disqualifies you from RDAP early release?
28 C.F.R. § 550.55(b) excludes, as an exercise of the Director’s discretion: ICE detainees; pretrial inmates; contract boarders; those with certain prior convictions within ten years of sentencing; those with a current felony involving force, a firearm or dangerous weapon, a serious potential risk of force, or sexual abuse of a minor; attempt, conspiracy or solicitation to commit those; and anyone who previously received a § 3621(e) release.
Is the RDAP sentence reduction automatic?
No. In Lopez v. Davis, 531 U.S. 230 (2001), the Supreme Court held that the Bureau “has the authority, but not the duty” to reduce a sentence under § 3621(e)(2)(B), and upheld categorical exclusion of prisoners whose current offense involved a firearm. The reduction also does not become final until community treatment is completed and certified.
Can you do RDAP and still get First Step Act credits?
Yes, in a defined order. Good conduct time is applied first, then the § 3621(e) reduction, then first step act time credits. Where there is not enough time for both, BOP policy reduces the credits applied “to allow for, at a minimum, the 120-day community-based placement as required under 3621(e).”
What happens if you are removed from RDAP?
Under 28 C.F.R. § 550.53(g) the Drug Abuse Program Coordinator may remove someone for disruptive behavior or unsatisfactory progress, and “[o]rdinarily, inmates must be given at least one formal warning before removal.” Previously earned incentives may be lost. Where an expulsion rested on an incident report later found not guilty or expunged, BOP policy provides a route to reinstatement.
Reviewed for legal accuracy by Elizabeth Franklin-Best, Esq., Principal Attorney·September 2026