Custody Timeline & Sentencing Auditor
Perform verified multi-count stacking computations, calculate jail time credit (pre-trial detention), apply jurisdiction-specific good-time statutory reductions, and audit earliest parole vs. conditional release and maximum expiration dates.
People v. Weinstein (NY Supreme Court)
| Count / Offense | Imposed Term | Stacking Rule | Net Effective Term | Credit Deducted | Conditional Discharge |
|---|
Understanding Sentencing Stacking & Custody Credits
Criminal sentencing law differs widely between state and federal jurisdictions, especially when managing multiple counts, pre-trial detention in facilities like Rikers Island or federal MDC, and subsequent sentences across separate states.
Consecutive vs. Concurrent Stacking
Concurrent sentences run at the exact same time; the defendant serves the length of the longest sentence imposed. Consecutive sentences are tacked onto the end of one another, adding total days before parole eligibility or release can occur. In cases involving separate trials in different states (e.g., New York and California), the second jurisdiction decides whether its term begins immediately or upon release from the first state's custody.
New York State 6/7th Determinate Rule (PL 70.40)
Under New York Penal Law § 70.40 and § 70.30, violent felony offenders serving determinate sentences are legally required to serve at least six-sevenths (85.71%) of their term before becoming eligible for conditional release to post-release supervision. The remaining one-seventh can be credited through institutional good behavior.
Pre-Trial Jail Time Credit (CPL § 430.20)
Any time a defendant spends in local custody awaiting trial, jury verdict, or re-trial is credited day-for-day against the minimum and maximum terms of any sentence subsequently imposed on that indictment.
Federal vs. State Good-Time Math
Under the federal First Step Act and 18 U.S.C. § 3624(b), federal prisoners serving terms over one year may earn up to 54 days per year of good conduct credit (calculated against the actual sentence imposed, resulting in serving approximately 85.2% of the term).
California Penal Code § 2933.1 restricts violent offenders to a maximum 15% worktime/conduct credit (must serve 85%), whereas non-violent offenses can earn 33.3% or 50% conduct credit.
This workbench ensures attorneys, journalists, and researchers can test counterfactuals: what happens if good conduct is forfeited? What is the impact if a consecutive sentence detainer is honored?