---
title: "Barber v. Thomas"
citation: "Barber v. Thomas, 560 U.S. 474 (2010)"
authority_id: "AUTH-SCOTUS-BARBER-560-US-474"
authority_type: "case"
jurisdiction: "federal_nationwide"
precedential_status: "binding_historical_statutory_interpretation"
official_url: "https://www.govinfo.gov/content/pkg/USREPORTS-560/pdf/USREPORTS-560-474.pdf"
url: "https://jason93.com/legal/federal-process/authorities/AUTH-SCOTUS-BARBER-560-US-474/"
legal_review: "2026-08-24"
links_checked: "2026-10-15"
links_available: 1
links_checked_count: 1
license: "CC BY 4.0"
---

# Barber v. Thomas

## Holding used

The Court upheld the Bureau's time-served calculation under the then-current text of § 3624(b).

## Material limitation

The First Step Act later replaced the operative calculation text for covered sentences. Do not cite *Barber* as the current formula.

## Official source

<https://www.govinfo.gov/content/pkg/USREPORTS-560/pdf/USREPORTS-560-474.pdf>


## Used in

- [18 U.S.C. § 3624(b) — Good Conduct Time](https://jason93.com/legal/federal-process/modules/80-sentence-execution-and-bop/good-conduct-time.md)