Presenter explains how the Bureau of Prisons calculates First Step Act time credits

A presenter described how the Federal Bureau of Prisons (BOP) calculates First Step Act (FSA) time credits and provided simplified examples showing how those credits change conditional release and community-placement dates.

The presenter said the BOP’s calculations “play a critical role in determining how quickly eligible inmates can transition from incarceration to community based programs or supervised release,” and that accurate, consistent application affects placement, public safety and costs.

Why it matters: FSA time credits shorten an inmate’s custodial days when earned through programming and validated assessments, which can move an eligible person to supervised release, home confinement or a community placement sooner than their full-term release date.

How the credit system works: “First step act time credits are earned every 30 days of programming,” the presenter said. Credits are earned at two rates: 10 credits per 30 days for medium or high pattern scores, and for inmates who are minimum/low pattern more than two assessments, the rate becomes 15 credits per 30 days. Every inmate’s first assessment occurs at 28 days; the second assessment is at 90 days if the projected release is under one year from the first assessment or at 180 days if it is over a year.

24-month example: Using an arrival date of 01/01/2025 and a 24-month sentence, the presenter showed the full-term release would be 12/31/2026. Under the transcript’s stated change to good-conduct time (from 54 days per year served to 54 days per year sentenced), that produces 108 days of good-conduct time and a good-conduct release of 09/14/2026. With FSA credits earned as described (initially 10 credits per 30 days, switching to 15 after the seventh 30-day increment), the example yields a First Step Act conditional release date of 03/23/2026 after earning 175 time credits, meaning the inmate would serve approximately 14½ months before conditional release.

60-month examples: For a 60-month sentence with arrival 01/01/2025 the presenter gave two scenarios. In the first (no residential-program credit), the full-term release is 12/31/2029 and good-conduct time of 270 days results in a good-conduct release of 04/05/2029. Applying the FSA earn-rate progression produces a First Step Act conditional placement date shown as 12/02/2027 and an early supervised-release conditional date of 04/05/2028; the example’s numbers total roughly 35 months served before community placement after earning 490 credits. In the second scenario the presenter said the inmate is eligible for residential drug-abuse program time-off (noted in the transcript as “36 21 e”), which accelerates the example’s timing: the conditional placement date is shown as 04/01/2027 and conditional release as 04/05/2027, with about 27½ months served after earning 370 credits.

120-month example: For a 120-month sentence (arrival 01/01/2025), the presenter showed a full-term release of 12/31/2034 and 540 days of good-conduct time (good-conduct release 07/09/2033). With the same earn-rate progression—switching to 15 credits per 30 days after the seventh 30-day increment—the sample yields a First Step Act conditional placement date of 09/28/2030, a conditional release of 07/09/2032, and an estimate of about 70 months served before community placement after earning 1,015 credits.

Presenter’s methodology note: The presenter described the BOP’s approach as using validated assessment tools, clear program participation records and standardized calculation procedures to apply statutory and regulatory requirements consistently and to preserve fairness, transparency and accountability across federal institutions.

The presenter closed by saying the illustrations are intended as reference material for staff, inmates and the public seeking to better understand how FSA time credits are calculated.