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Why Can Someone Remain in a Detention Center After Sentencing, and How Do Designation and Transfer Work?

Designation happens after documents reach the Designation and Sentence Computation Center. Movement is separate and is not disclosed in advance.

Post-sentencing • Custody transition Last reviewed: September 6, 2026

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Short answer

After sentencing, the Designation and Sentence Computation Center must receive the sentencing material from the court, probation and the Marshals Service before a designation is made. Bureau policy states the initial designation is ordinarily completed within three working days of receiving all necessary documentation — a statement about the decision, not a promise that transportation happens within three days. Movement is a separate step, and the Bureau states transfer dates are not released.

Attorney review pending. This is general education, not legal advice.

Plain-English overview

The direct answer: sentencing does not move anyone. A designation must be made, and it depends on documents reaching the Designation and Sentence Computation Center from the sentencing court, the United States Probation Office and the United States Marshals Service. Physical transportation is a separate step after that.

Program Statement 5100.08 states that the Center will ordinarily complete the initial designation within three working days of receiving all the necessary documentation. That statement is about the decision, not about movement, and it says nothing about when the documentation arrives.

CaseSteps does not estimate how long anyone will remain in a detention facility, does not describe movement procedures and does not provide routes or dates. Those are security matters and individual matters.

Why this matters

This period is one of the hardest for families, and it is filled with rumors. Knowing which step is which makes it possible to ask a useful question instead of an unanswerable one.

Four separate steps

Sentencing

The court imposes the sentence and produces the judgment and statement of reasons.

Documents

Sentencing material reaches the Designation and Sentence Computation Center from the court, probation and the Marshals Service.

Designation

The Bureau decides the facility under § 3621(b). Policy describes this as ordinarily completed within three working days of receiving all necessary documentation.

Transportation

A separate step, on no published schedule. Transfer dates and times are not released.

Ten things people treat as one thing

Sentence commencement

The date a federal term of imprisonment begins under 18 U.S.C. § 3585(a).

Prior-custody credit

Credit under § 3585(b) for time in official detention before the sentence commenced, computed by the Bureau of Prisons.

Good-conduct time

Up to 54 days per year of the sentence imposed under § 3624(b), based on the Bureau's determination about institutional conduct.

First Step Act Time Credits

A separate credit earned by eligible people for successfully completing assigned qualifying programming, with its own earning and application rules.

A projected release date

A forward-looking figure produced by the Bureau's computation that changes as records change.

A conditional or projected prerelease date

A different figure about community placement, not the end of the term of imprisonment.

Designation

The Bureau's decision under § 3621(b) about which facility a person is assigned to.

Transportation

The physical movement to that facility, which happens separately and on no published timetable.

Federal custody, state custody, primary jurisdiction

Which sovereign holds primary custodial jurisdiction is a separate question from who is physically holding someone on a given day.

A court recommendation and the BOP's authority

A sentencing court may recommend a facility or program; § 3621(b) leaves the designation decision with the Bureau of Prisons.

Common misunderstandings

  • "Three working days is the wait." The three-working-day statement describes completing the designation after all necessary documentation has been received. It is not a transportation commitment.
  • "Nobody is doing anything." Official material describes an internal monitoring process; the Bureau's policy directs staff to check on arrivals that have not occurred within 30 calendar days for shorter sentences and 120 calendar days for terms of one year or more.
  • "A family member can find out the transfer date." The Bureau states that pending designation site and transfer date are not released to anyone, even with a signed authorization form.
  • "Time in the detention facility is lost." Whether a period is service of a commenced sentence or is potential prior-custody credit under § 3585(b) is a computation question, and it is separate again from whether First Step Act credits are being earned.

Dated rule change — checked September 6, 2026

Through September 29, 2026, the existing version of 28 C.F.R. § 523.42(a) remains the currently effective regulatory text. It ties the start of First Step Act Time Credit earning to the date the person arrives, or voluntarily surrenders, at the designated Bureau of Prisons facility.

Effective September 30, 2026, revised § 523.42(a) states: “An eligible inmate begins earning FSA Time Credits after the inmate’s term of imprisonment commences.” The amendment removes the language that tied commencement to arrival or voluntary surrender at the designated Bureau facility.

This does not mean credits begin automatically merely because a sentence was imposed. The person must still be eligible and must successfully complete assigned, approved evidence-based recidivism-reduction programming or productive activities. The change does not promise retroactive credits and does not establish any individual release, placement or transition date. Implementation guidance and practices may change. Check the current regulation and current Bureau of Prisons guidance.

The same rule revises 28 C.F.R. § 523.44(a)(3). It states that the paragraph does not bar application of First Step Act Time Credits for a person serving a sentence imposed in a foreign country when the U.S. Parole Commission has determined an equivalent U.S. Code sentence under 18 U.S.C. § 4106A.

The document is an interim final rule and request for comments, published August 31, 2026 at 91 FR 55740, effective September 30, 2026. Comments are accepted through September 30, 2026. The Bureau invoked the Administrative Procedure Act’s good-cause provisions rather than using prior notice and comment.

This page describes a regulation that changes on September 30, 2026. Confirm the current regulation and Bureau of Prisons guidance before relying on it.

The rule about when First Step Act credit earning can begin changes on September 30, 2026 under the interim final rule published August 31, 2026 at 91 FR 55740, which removes the designated-facility restriction in 28 C.F.R. § 523.42(a).

That change is about credit earning, not about designation or transportation. Nothing in it creates a timetable for movement.

Records that may help clarify the issue

  • The judgment and commitment order and the statement of reasons.
  • The sentence-computation sheet once it exists.
  • Any written notice about designation status provided to the person in custody.
  • Do not upload any of these records to CaseSteps, and do not type case numbers, dates or names anywhere on this site. Nothing here accepts files or keeps what you type.

Questions for appropriate Bureau of Prisons staff

  • In general terms, has the designation been completed?
  • Which documents are still outstanding, if any?
  • What programming, if any, is assigned and recorded at this facility now?
  • How is a medical or mental-health need communicated while the person is still here?

Who does what, in general terms

  • The United States Marshals Service assumes custody of people arrested by federal agencies and is responsible for housing and transporting prisoners from the time they are brought into federal custody until they are acquitted or incarcerated.
  • After conviction, delivering the person to an institution to serve the imposed sentence is a Marshals Service responsibility.
  • The Bureau of Prisons decides the designation. Designation and physical transportation are separate events, and one does not tell you when the other will happen.
  • The Justice Prisoner Air Transportation System, managed by the Marshals Service, coordinates many prisoner movements between judicial districts and correctional institutions; ground transportation is usually provided by the Marshals Service and the Bureau of Prisons.
  • The Bureau states that, due to security requirements, a particular person's pending designation site and transfer date will not be released to anyone, even with a signed authorization form.
  • No public source promises a particular transportation date or a maximum waiting period. CaseSteps does not describe routes, schedules or movement procedures.

Exactly where each statement above comes from — source checked: September 6, 2026

  • Documents required before designation, and their sources: Bureau of Prisons Designations page, read September 6, 2026.
  • Initial designation ordinarily completed within three working days of receiving all necessary documentation: Program Statement 5100.08, Chapter 3, page 1, read September 6, 2026.
  • Monitoring of arrivals at 30 calendar days for terms of less than one year and 120 calendar days for terms of one year or more, and cancellation of a designation that is no longer valid: Program Statement 5100.08, Chapter 3, pages 5–6.
  • A person in a Bureau facility may be advised of the destination but not of the date or time of transfer, and designation or transfer information is not released publicly until arrival: Program Statement 5100.08, Chapter 3, page 6, and the Bureau of Prisons Designations page.
  • Marshals Service responsibility for housing and transporting prisoners in its custody, and for delivering a convicted person to an institution to serve the sentence: United States Marshals Service, Custody and Detention, official page text read September 6, 2026.
  • Justice Prisoner Air Transportation System coordination of movements between judicial districts and correctional institutions, and ground transportation usually provided by the Marshals Service and the Bureau of Prisons: United States Marshals Service, Prisoner Transportation, official page text read September 6, 2026.
  • Pending designation site and transfer date not released due to security requirements: Bureau of Prisons Designations page, read September 6, 2026.
  • No source consulted states a transportation date or a maximum waiting period; CaseSteps therefore states none.
  • The interim final rule at 91 FR 55740 (August 31, 2026), effective September 30, 2026, amends 28 C.F.R. § 523.42(a) only; it does not address designation or transportation.
  • Source checked: September 6, 2026.

What CaseSteps cannot do

CaseSteps does not calculate prior-custody credit, good-conduct time, First Step Act Time Credits, a release date or any other figure.

CaseSteps does not predict a facility, a designation, a transfer date, a transportation route or how long anyone will remain in a detention facility, and it does not say whether sentences run concurrently or consecutively in a particular case or whether a detainer is valid.

The Bureau of Prisons performs the official sentence computation and holds the designation authority. Individual questions belong with appropriate Bureau staff and with qualified counsel.

Questions to discuss with counsel

  • In general terms, what has to happen before a designation can be made in a case like this?
  • Is there anything counsel can appropriately follow up on regarding documents?
  • How should a documented medical need be raised during this period?
  • How will this period be treated in the sentence computation?
  • What should the family avoid assuming during this time?

Official sources

This is general federal legal education, not legal advice. Procedures and outcomes depend on the facts, the controlling law, court orders and local practices. Confirm deadlines and decisions with qualified counsel.

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