What Is a Detainer, and How Can It Affect Designation, Transfer or First Step Act Time Credits?

Four things that are not the same

Ten things people treat as one thing

Where a detainer can matter, stated carefully

• Security classification: Program Statement 5100.08 includes a 'Type of Detainer' scoring item, with severity tied to the underlying offense behavior.
• Designation and transfer: classification scoring feeds the security level of the facility, and the Bureau's stated criteria include separation needs and other security concerns.
• Immigration detainers specifically: the classification manual states that no points are awarded for immigration detainers, though each case is reviewed to determine whether a public-safety factor for deportable alien applies.
• Application of First Step Act credits: barred by § 523.44(a)(2) where a person is subject to a final order of removal under the immigration laws — a narrower circumstance than 'has a detainer.'
• Separately, Bureau policy addresses unresolved pending charges, detainers and unresolved immigration status in the application section: Program Statement 5410.01 CN-2, Section 10, states that people with unresolved pending charges or detainers may earn credits if otherwise eligible, but will be unable to apply them to prerelease custody or release to supervision unless the charges or detainers are resolved, and that unresolved immigration status is treated like unresolved pending charges for application purposes. That is policy about applying credits, not a rule that a detainer stops earning.
• Community placement decisions are individual Bureau determinations. CaseSteps does not state what any detainer will mean for a particular placement.

Common misunderstandings

• "Any detainer stops First Step Act credits from being earned." The earning rules in 28 C.F.R. § 523.42 and the ineligibility provision in § 523.41(d) are not written around detainers. Earning and applying are separate questions.
• "A detainer is the same as a removal order." It is not. The credit-application bar in § 523.44(a)(2) is written about a final order of removal under the immigration laws as defined in 8 U.S.C. 1101(a)(17).
• "An immigration detainer raises the security score." The classification manual states that no points are awarded for immigration detainers, while a separate public-safety factor review may apply.
• "A detainer means the transfer is invalid or the sentence is wrong." A detainer is a notice about future custody. Whether any detainer is valid is a legal question CaseSteps does not answer.

Records that may help clarify the issue

• Detainer information reflected in the Bureau of Prisons file.
• The judgment and commitment order.
• The security-designation and custody-classification data used for the current score.
• The current FSA Time Credit Assessment showing earning and application status separately.
• Any immigration documents held by counsel — not by CaseSteps.
• 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

• Does the file show a detainer, and from which authority?
• Which document reflects that?
• Is my record showing credits as being earned, and separately, as capable of being applied?
• If detainer information in the file looks incorrect, what is the general process for asking about it?

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

• Application bar tied to a final order of removal under the immigration laws as defined in 8 U.S.C. 1101(a)(17), with a cross-reference to 18 U.S.C. 3632(d)(4)(E): 28 C.F.R. § 523.44(a)(2), current eCFR text read September 6, 2026.
• Separate application bar for offenses under laws other than the U.S. Code: § 523.44(a)(3), same source, subject to the pending amendment noted in the dated panel.
• 'Type of Detainer' scoring item, guidance that severity follows the underlying offense behavior, and the instruction that no points are awarded for immigration detainers while a deportable-alien public-safety factor review may apply: Program Statement 5100.08, Chapter 4 scoring instructions, read September 6, 2026.
• Separation needs and security concerns among the administrative factors in designation: Bureau of Prisons Designations page, read September 6, 2026.
• Nothing in 28 C.F.R. part 523, subpart E, read in full on September 6, 2026, makes the existence of a detainer a bar to earning First Step Act Time Credits. Section 523.44(a)(2) is written about a final order of removal and is not a general detainer rule.
• Unresolved pending charges, detainers and unresolved immigration status discussed in connection with applying credits, with earning expressly preserved: Program Statement 5410.01 CN-2 (March 10, 2023), Section 10, Application of FTCs, page 13, read September 6, 2026.