Federal Custody Date Estimator

A simple educational timeline tool for families.

Important: This is not an official BOP sentence computation, legal advice, or a release-date determination. It does not calculate Good Conduct Time, First Step Act time credits, jail credit, forfeitures, ineligibility, RRC placement, home confinement, or other adjustments. Always rely on official BOP records and your sentencing documents.

Basic sentence timeline

Sentence start date

Sentence length (months)

This tool only adds the entered number of calendar months to the entered start date. It intentionally does not subtract credits or predict prerelease custody.

Credits are a separate calculation

Good Conduct Time and First Step Act Time Credits follow different rules. Earning FSA Time Credits is also different from having earned credits applied toward prerelease custody or an eligible early transfer to supervised release. Do not subtract a simple number of days from this estimator and treat the result as an official release date.

Understand GCT & FSA credits Understand BOP search results

Before relying on any date

Compare any estimate with the official BOP inmate record, sentence computation, judgment, and applicable law. Questions about credit disputes, eligibility, disciplinary forfeitures, or legal deadlines may require counsel or the BOP administrative remedy process.

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