State guide Illinois

Illinois Criminal Defense explained: what needs order before action, arraignment sequencing, and before the record drifts

Focused criminal defense guidance for Illinois on what needs order before action, case posture, and the early order that prevents drift.

Reviewed January 2026 3 min read Official-source grounded Ver en Espanol En Español
Key Takeaways
  • Class X felony: 6–30 years, NO probation — armed robbery, home invasion, aggravated sexual assault, major trafficking
  • SAFE-T Act (Sept 2023): cash bail eliminated; prosecutor must petition for detention within 48 hours and prove danger or flight risk
  • Expungement: available after acquittals, dismissals, supervision completion; sealing available for most conviction types after waiting period
  • Truth in sentencing: 85% for most Class X violent offenses; 100% (no credit) for first-degree murder
  • Court supervision: withholds conviction entry; successful completion = dismissal + expungement eligible — NOT available for DUI
Key Numbers — Illinois All 50 states →
Filing Deadline 2 years
Fault Rule Modified Comparative
Insurance System At-Fault
Key Statute 735 ILCS 5/13-202
Criminal Defense guide for Illinois
Photo by Zachary Caraway on Pexels
Illinois Criminal Defense — Key Facts
  • Class X felony: most serious non-murder felony — 6 to 30 years, no probation eligibility (720 ILCS 5/33B-1)
  • Safe-T Act (2023): significant bail and pretrial reform — cash bail eliminated statewide
  • Illinois Expungement and Sealing: broad relief available under 20 ILCS 2630/5.2 — one of the most accessible in the country
  • Truth in Sentencing: certain violent offenders must serve 85–100% of their sentence (730 ILCS 5/3-6-3)

Illinois criminal law was transformed by the SAFE-T Act (Safety, Accountability, Fairness and Equity-Today Act), enacted in 2021 and fully effective September 2023 after extensive litigation. The Act eliminated cash bail in Illinois — the first state to do so — replacing pretrial detention with a risk-based system where prosecutors must petition for detention and show the defendant poses a danger or flight risk. Illinois also has one of the most comprehensive expungement and sealing statutes in the country, providing meaningful post-conviction relief.

Illinois Felony Classifications

Illinois classifies felonies from most to least severe as: Murder (Class M — 20 to 60 years, or life); Class X (6–30 years, no probation); Class 1 (4–15 years); Class 2 (3–7 years); Class 3 (2–5 years); Class 4 (1–3 years). Class X felonies — which include armed robbery, home invasion, aggravated criminal sexual assault, and major drug trafficking — carry no possibility of probation. This makes Class X charging decisions particularly consequential because there is no suspended sentence option; conviction means imprisonment. Extended-term sentencing can double the maximum prison term for defendants with prior felony records.

The SAFE-T Act: End of Cash Bail

Illinois became the first state to eliminate cash bail when the SAFE-T Act's pretrial provisions took effect on September 18, 2023. Under the new system: defendants are no longer held simply because they cannot afford bail. Instead, the prosecution must file a petition for pretrial detention within 48 hours of arrest and demonstrate, by clear and convincing evidence, that the defendant: (1) poses a real and present threat to the safety of a specific identifiable person or the community, or (2) poses a willful flight risk. A detention hearing is held before a judge who decides whether to detain. For most defendants, release is presumed — with or without conditions — unless the prosecution meets its burden. The change was intended to end wealth-based pretrial detention while maintaining judicial authority to detain genuinely dangerous defendants.

Illinois Expungement and Sealing: Broad Post-Conviction Relief

Illinois's expungement and sealing statute (20 ILCS 2630/5.2) is among the most accessible in the country. Key provisions:

  • Expungement: available for arrests where no conviction resulted (charges dropped, acquittal, supervision successfully completed). Expunged records are physically destroyed and may be legally denied. Waiting period is typically immediately after case termination for acquittals or 3 years after successful completion of supervision.
  • Sealing: available for most felony and misdemeanor convictions after waiting periods (typically 3 years after sentence/probation completion for most felonies). Sealed records are hidden from public view but retained by law enforcement. Many offense types are sealable — Illinois's list of non-sealable offenses is narrower than many states.
  • Automatic expungement: enacted as part of the Cannabis Regulation and Tax Act, automatic expungement of cannabis possession convictions of under 30 grams is available, with the governor's pardons facilitating clearance of other cannabis records.

Truth in Sentencing and Good Conduct Credit

Illinois's truth-in-sentencing laws (730 ILCS 5/3-6-3) require certain violent offenders to serve a minimum percentage of their sentenced time: murder, aggravated criminal sexual assault, and certain other Class X offenses require 85% time served; first-degree murder requires 100% (no good conduct credit). For other offenses, Illinois allows good conduct credit of up to 4.5 days credit per month served. Understanding truth-in-sentencing is essential to evaluating plea offers — a 10-year sentence on an offense requiring 85% service means 8.5 years; on a standard sentence, good conduct credit could reduce the time significantly.

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