Federal Prison and Sentencing Glossary

Definitions of the federal sentencing and Bureau of Prisons terms that appear on sentence computation sheets and in this calculator.

Common terms

  • GCT — Good Conduct Time, 54 days per year of the sentence imposed.
  • FTC — First Step Act earned time credits, earned in 30-day blocks.
  • PATTERN — the BOP's risk and needs assessment, which sets the FSA earning rate.
  • RDAP — Residential Drug Abuse Program, worth up to a 12-month reduction.
  • RRC — Residential Reentry Center, commonly called a halfway house.
  • SCA — Second Chance Act, which authorizes prerelease community placement.
  • Writ days — time on temporary transfer to another jurisdiction, during which FSA credits are not earned.
  • Detainer — a hold placed by another jurisdiction that can affect placement and FSA credit application.

Federal Sentence Help is an educational resource and is not a law firm. Projections are estimates; actual dates are determined by the Bureau of Prisons. More resources at federalsentencehelp.org.