Home Defense Support Post-Conviction For Attorneys About Forms & Legal Resources Legal Resources Client Portal Make a Payment
Home› Resources› Federal Sentence Reduction Calculator
Free Calculator Tool

Federal Sentence Reduction Calculator

Estimate combined effect of First Step Act earned time credits, RDAP § 3621(e), Second Chance Act RRC and home confinement, and Good Conduct Time. Toggle each credit stream on or off to see exactly how your release date and community placement shift.

How Federal Sentence Reductions Stack

A federal sentence can be reduced through four separate credit streams. They stack — but each has its own statutory framework, eligibility rules, and order of application. This calculator implements the actual BOP Sentence Monitoring computation: 30-day FSA earning cycles, two-consecutive-Min/Low PATTERN gating, § 3624(c) combined community-placement cap, and § 3621(e) tiered RDAP reduction. Toggle each credit stream on or off to see exactly how your release date and community placement window shift.

Good Conduct Time · § 3624(b)
FSA Time Credits · § 3632(d)(4)
RDAP · § 3621(e)
Second Chance Act · § 3624(c)
1

Defendant Status

Federal sentencing and FSA disqualifying offense check.
Only federal inmates qualify for FSA, RDAP, SCA, and GCT under § 3624.
See § 3632(d)(4)(D) and the disqualifying-offense reference below the calculator for full list.
Per § 3632(d)(4)(E) and § 3624(g)(1)(D), inmates with ICE detainers / final removal orders may earn FSA credits but cannot apply them to early supervised release. Credits may still apply to extended community placement under § 3624(g)(2). State detainers may affect BOP designation but do not bar FSA application.
2

Sentence Information

Pull these directly from the J&C Order and BOP SENTRY Sentence Monitoring Computation Data sheet.
Self-surrender: defendant reports directly to designated facility. In custody / Marshals: defendant taken into federal custody at or before sentencing and transported by USMS. Affects sentence commencement under § 3585(a) and FSA accrual start date.
Date of sentencing per the J&C Order.
Date sentence commenced under § 3585(a). For self-surrender: the report date. For in-custody: typically the sentencing date or the date of federal custody.
Date arrived at designated BOP facility. FSA earning begins here under 28 C.F.R. § 523.42(b). May lag commencement by weeks for in-custody defendants in USMS transit. Defaults to BOP custody date if left blank.
Date defendant first entered federal custody pre-sentencing (arrest, surrender to USMS, state-to-federal transfer). Auto-calculates pretrial-credit days. Per Yufenyuy v. Warden, this counts under § 3585(b) but does NOT accrue FSA credits.
60 months = 5 years and 0 months, or 0 years and 60 months.
Auto-populated from pretrial custody entry date, or enter directly. Counts day-for-day against the sentence under § 3585(b).
Good Conduct Time disallowed by the Disciplinary Hearing Officer for rule violations under § 3624(b)(1). Separate from FSA credit forfeitures.
3

First Step Act Time Credits — § 3632(d)(4)

30-day earning cycles per § 3632(d)(4). Calculator approximates totals via 180-day Program Review blocks. Optional SENTRY snapshot calibration.
Per § 3624(g)(1)(B), only Minimum/Low may apply credits to early supervised release.
Per § 3632(d)(4)(A)(ii), inmate earns the enhanced 15/30 rate only after Min/Low on two consecutive PATTERN assessments. "Project" assumes Min/Low will continue and enhancement begins at block 3.
Per PS 5322.13, Initial Classification occurs within 28 days of arrival; the first Program Review follows ~180 days later. Subsequent Program Reviews every 180 days (or every 90 days when within 12 months of release). FSA credits accrue automatically per 30-day cycle under § 3632(d)(4). Override only if actual Program Review date is known.
If currently in non-earning status (SHU, opt-out, refused programming), credits are paused until re-entry to earning status.

SENTRY Snapshot Calibration Optional

When you provide the inmate's actual SENTRY-reported credit balance as of a specific date, the calculator switches from theoretical-maximum projection to rate extrapolation — trusting BOP's observed earning rate as authoritative. Match BOP's own projection within ±15 days in validated cases.

FTC current balance from the inmate's Sentence Monitoring Computation Data sheet, Page 2 or Individualized Reentry Plan.
The "as of" date printed on the SENTRY sheet — typically the most recent team-meeting date.

Non-Earning Periods (28 C.F.R. § 523.42(c))

Days that interrupt FSA accrual, distributed proportionally across earning blocks. Each category has distinct statutory and regulatory basis.

Days in USMS or BOP transit between facilities, including FTC-Oklahoma layovers.
Disciplinary segregation under PS 5270.10 — not earning programming credits.
Authorized § 3622 furloughs — court appearances, family emergencies, medical.
Voluntary refusal of EBRR programming under § 3632(d)(4)(B).
FSA Time Credits forfeited via disciplinary action under § 3632(e). Separate from GCT forfeitures above.
4

RDAP — § 3621(e)

Residential Drug Abuse Program. Toggle on if the inmate qualifies and will complete RDAP.
Documented substance abuse within 12 months before arrest is required. Best evidence: PSR documentation.
RDAP early release under § 3621(e) is barred for crimes of violence, firearm enhancements (§ 924(c)), and contact sex offenses.
A prior § 3621(e) early release disqualifies the inmate from receiving another. One-time eligibility only.
RDAP requires successful completion of the 9-12 month residential program plus community aftercare (TDAT).
5

Second Chance Act — § 3624(c)

RRC (halfway house) and home confinement. Stacks on top of FSA prerelease custody.
Statutory maximum is 12 months. Actual placement depends on BOP's Five Factor Review under § 3621(b).
Statutory cap is the LESSER of 6 months OR 10% of sentence imposed.
★ How SCA + FSA Stack (Per Director Marshall's 2025 Directives) Within SCA: Total RRC + Home Confinement combined cannot exceed 12 months per § 3624(c)(1). HC under § 3624(c)(2) is further capped at the lesser of 6 months or 10% of sentence — but that HC time is INCLUDED in the 12-month SCA total, not on top of it.

SCA + FSA stack on top of each other: FSA earned time credits (early release + unlimited prerelease) and SCA placement (up to 12 months) are cumulative and stackable per BOP Director Marshall's June 17, 2025 directive. A defendant can receive 365 days FSA early release + unlimited FSA prerelease in RRC/HC + 12 months SCA placement.
Reset

Projection Results

Built on the actual BOP Sentence Monitoring computation. Toggle credit streams above to recalculate.

Combined Reduction Timeline
Secure BOP Custody
RRC (Halfway House)
Home Confinement
Early Supervised Release (FSA)
⚠ Disclaimer — Read Carefully This calculator implements the actual BOP Sentence Monitoring computation: § 3585 sentence commencement, § 3624(b) Good Conduct Time at 54 days per year, § 3632(d)(4) FSA earning at 10/30 base and 15/30 enhanced rates per 30-day cycle (PS 5410.01), with Initial Classification at 28 days and subsequent Program Reviews every 180 days (or 90 days within 12 months of release) per PS 5322.13. Calculator approximates totals using 180-day cumulative blocks, § 3624(g) FSA application with the 365-day early-SR cap and surplus to community placement, § 3621(e) RDAP tiered reduction (up to 12 / 9 / 6 months by sentence length), and § 3624(c)(1)–(2) Second Chance Act prerelease custody with the 12-month combined cap and the lesser-of-6mo-or-10% home-confinement subcap. SENTRY snapshot calibration uses rate extrapolation from observed credits when provided. Results are projections only. Actual outcomes depend on BOP designation, PATTERN reassessments, programming participation, disciplinary status, detainer resolution, and BOP discretion. Validated within ±15 days against real BOP SENTRY printouts for in-custody federal inmates. Not legal advice. Confirm against the BOP Designation and Sentence Computation Center (DSCC, Grand Prairie, TX) computation before relying on any specific date. For litigation use (§ 2241 petitions, sentencing memoranda), pair this output with the inmate's actual Individualized Reentry Plan and Sentence Monitoring Computation Data sheet.

Disqualifying Offenses Reference

▾

FSA Disqualifying Offenses — 18 U.S.C. § 3632(d)(4)(D)

The following categories render an inmate ineligible to earn FSA Time Credits.

Terrorism & National Security

  • Any offense under 18 U.S.C. Chapter 113B (terrorism)
  • Espionage and sabotage offenses (Chapter 37)
  • Treason, sedition, and rebellion offenses (Chapter 115)

Violent Crimes

  • Murder, attempted murder, conspiracy to commit murder (§§ 1111, 1117)
  • Voluntary manslaughter (§ 1112)
  • Assault with intent to commit murder, kidnapping, or aggravated sexual abuse
  • Kidnapping (§ 1201) and hostage-taking (§ 1203)
  • Carjacking with serious bodily injury (§ 2119(2), (3))
  • Hobbs Act robberies under § 1951 when committed with violence
  • Drive-by shootings (§ 36); Arson (§§ 81, 844(f), (i), (h))
  • Destruction of aircraft (§ 32), motor vehicles (§ 33)

Sex Offenses & Crimes Against Children

  • Aggravated sexual abuse, sexual abuse, abusive sexual contact (Chapter 109A)
  • Sexual exploitation and other abuse of children (Chapter 110)
  • Failure to register as a sex offender (§ 2250)
  • Sex trafficking of children or by force, fraud, coercion (§§ 1591, 2421A, 2422(b), 2423)

Drug, Firearm, and Other Major Categories

  • Heroin or fentanyl importation/exportation (21 U.S.C. § 960(a), (b) in qualifying quantities)
  • Continuing Criminal Enterprise (21 U.S.C. § 848)
  • Drug offenses with death or serious bodily injury enhancements
  • Use of a firearm in furtherance of drug trafficking or crime of violence (§ 924(c))
  • RICO when predicate involves a listed violent offense
  • Repeat violent or sex offender convictions under § 3559(c)

RDAP Early Release Exclusions — § 3621(e)

RDAP participation is broadly available, but the early release benefit is barred for:

  • Any "crime of violence" as defined by BOP regulation
  • Offenses involving carrying, possession, or use of a firearm
  • Offenses involving sexual abuse upon minors (§§ 2251, 2251A)
  • Prior conviction for homicide, forcible rape, robbery, aggravated assault
  • Inmates with prior § 3621(e) reductions (one-time only)
  • Detainers that prohibit completion of the community treatment component
  • Pretrial offenders and contract boarders
  • Federal offenses committed before November 1, 1987

Important: Many of these offenses have specific circumstantial qualifiers. Consult counsel to assess the specific charge and any enhancements.