Statute of Limitations in Illinois: Deadlines by Case Type

Illinois law imposes strict filing deadlines — known as statutes of limitations — on virtually every category of civil and criminal legal action. These deadlines are codified in the Illinois Compiled Statutes (ILCS) and vary significantly by claim type, ranging from 1 year for defamation actions to 20 years for certain written contract disputes. Missing a deadline extinguishes the right to bring a claim, regardless of its merit, making these timelines among the most consequential procedural facts in Illinois litigation.

• Definition and scope
• Core mechanics or structure
• Causal relationships or drivers
• Classification boundaries
• Tradeoffs and tensions
• Common misconceptions
• Checklist or steps (non-advisory)
• Reference table or matrix
• References

Definition and scope

A statute of limitations is a legislatively enacted deadline by which a lawsuit or prosecution must be initiated. Under Illinois law, these deadlines are established primarily through the Illinois Code of Civil Procedure (735 ILCS 5/13) for civil matters, and through the Illinois Criminal Code and the Code of Criminal Procedure of 1963 (725 ILCS 5/3-5) for criminal prosecutions.

The scope of these statutes extends across contract disputes, personal injury claims, property damage, professional malpractice, fraud, employment discrimination, and criminal offenses. Certain claims — most notably murder and certain sex crimes involving victims under the age of 18 — carry no statute of limitations under Illinois law (725 ILCS 5/3-5(a)).

Geographic and jurisdictional scope: This page covers statutes of limitations as defined under Illinois state law, applicable to proceedings in Illinois state courts. Federal claims filed in the Northern, Central, or Southern Districts of Illinois are governed by federal statutes and applicable federal common law, which operate independently of Illinois deadlines. Claims arising under federal statutes — such as Title VII of the Civil Rights Act of 1964 — carry their own filing windows with federal agencies such as the Equal Employment Opportunity Commission (EEOC) and are not covered here. For regulatory context governing the broader Illinois legal framework, see Regulatory Context for the Illinois Legal System.

Core mechanics or structure

The operational structure of a statute of limitations involves three core components: the accrual date, the limitations period, and any applicable tolling or discovery rules.

Accrual. The clock begins running on the date a cause of action "accrues." In most tort cases, accrual occurs when the injury happens. In fraud or latent injury cases, Illinois applies a discovery rule: accrual is delayed until the plaintiff knew or reasonably should have known of the injury and its wrongful cause. The Illinois Supreme Court affirmed the discovery rule's application in latent injury contexts under 735 ILCS 5/13-215, the "fraudulent concealment" statute.

The limitations period. Once accrual occurs, the plaintiff has a fixed window to file a complaint in a court of competent jurisdiction. Filing the complaint — not service on the defendant — stops the clock under Illinois practice, provided service is achieved within a reasonable time.

Tolling. Illinois law recognizes several bases for tolling (pausing) the limitations period. Under 735 ILCS 5/13-211, minors and persons under legal disability have tolling protections: the period does not begin running until the disability is removed, subject to a maximum 2-year extension after the disability ends. Fraudulent concealment by a defendant can toll the period under 735 ILCS 5/13-215.

Repose statutes. Distinct from limitations periods, statutes of repose establish an absolute outer deadline regardless of accrual or tolling. Illinois product liability claims, for example, are subject to a 12-year repose period under 735 ILCS 5/13-213, meaning no claim can be brought more than 12 years after the product was first sold, even if the injury was not discoverable within that window.

Causal relationships or drivers

The variation in Illinois limitations periods across claim types reflects legislative policy judgments about evidentiary preservation, defendant certainty, and the nature of the harm.

Evidentiary decay. Short limitations periods in defamation (1 year, 735 ILCS 5/13-201) reflect the rapid degradation of reputational evidence and witness memory in publication disputes. Medical malpractice's 2-year window with a 4-year repose (735 ILCS 5/13-212) balances patient discovery rights against healthcare provider certainty.

Public policy on child abuse. Illinois extended the limitations period for childhood sexual abuse claims to 20 years after the victim turns 18 (735 ILCS 5/13-202.2), reflecting legislative recognition that trauma-related suppression delays victim reporting.

Commercial certainty. The 10-year period for written contracts (735 ILCS 5/13-206) — compared to 5 years for oral contracts (735 ILCS 5/13-205) — incentivizes formal documentation of commercial agreements. Parties to written contracts receive extended protection precisely because written evidence survives longer and with greater reliability.

Criminal severity gradations. For criminal prosecutions, the Illinois General Assembly has calibrated limitations periods to offense class. Class A misdemeanors carry an 18-month window; most Class 3 and 4 felonies carry a 3-year window; and Class 1 and 2 felonies carry a 3-year period with exceptions for sex crimes, financial crimes, and public corruption, which can extend to 7 years or longer under 725 ILCS 5/3-5.

Classification boundaries

Illinois statutes of limitations divide cleanly across three primary axes: civil versus criminal, the subject matter of the claim, and whether the injured party was under a recognized disability at the time of accrual. The Illinois Compiled Statutes organize these provisions separately — Article XIII of the Code of Civil Procedure for civil matters, and Article III of the Code of Criminal Procedure for criminal prosecutions.

Within civil law, the dominant sub-classifications are:

• Tort claims (personal injury, property damage, wrongful death): generally 2 years under 735 ILCS 5/13-202
• Contract claims: 10 years (written) or 5 years (oral/unwritten)
• Professional malpractice: 2 years with 4-year repose (medical); 2 years with no repose cap (legal malpractice under 735 ILCS 5/13-214.3)
• Product liability: 2 years from discovery, 12-year repose
• Defamation: 1 year
• Fraud: 5 years from discovery
• Childhood sexual abuse: 20 years from the victim's 18th birthday

Governmental defendants impose a threshold layer: tort claims against Illinois local governmental entities require compliance with the Local Governmental and Governmental Employees Tort Immunity Act (745 ILCS 10/), which includes a 1-year limitations period for many actions against municipalities and a notice requirement.

Federal claim boundaries: Employment discrimination charges under the Illinois Human Rights Act (775 ILCS 5/) must be filed with the Illinois Department of Human Rights (IDHR) within 300 days of the alleged violation — a distinct administrative deadline not governed by the general tort statute.

Tradeoffs and tensions

Illinois limitations law reflects ongoing tension between plaintiff access and defendant protection — a tension that surfaces most sharply in 3 recurring contexts.

Discovery rule versus repose. The discovery rule extends plaintiff access by delaying accrual; the repose statute caps total liability exposure regardless of discovery. In medical malpractice, these two mechanisms interact so that a patient who discovers malpractice in year 3 has only 1 additional year to file before the 4-year repose under 735 ILCS 5/13-212 extinguishes the claim. Courts have consistently held that the repose period runs from the last act of negligence, not the discovery date.

Minority tolling versus perpetual liability. The minor plaintiff tolling provision under 735 ILCS 5/13-211 permits claims to be brought well into adulthood for harms sustained in childhood, but this creates documentation and evidentiary preservation challenges for defendants who may not know a claim is latent. Medical malpractice is an exception: 735 ILCS 5/13-212(b) caps childhood medical malpractice claims at 8 years from the act, regardless of minority status, unless the injury was in the reproductive system.

Governmental immunity timing. The 1-year period under the Tort Immunity Act is shorter than the standard 2-year tort period, creating a trap for plaintiffs who assume general tort law controls when a governmental entity is involved. This disparity generates significant adverse outcomes in cases involving municipal vehicle accidents, public school incidents, and park district operations.

Common misconceptions

Misconception: Filing a police report or administrative complaint tolls the civil statute of limitations.
A police report, EEOC charge, or IDHR complaint does not toll the civil limitations period in Illinois unless a specific statute expressly provides for tolling during administrative proceedings. The civil and administrative clocks typically run independently.

Misconception: The statute of limitations is the same as the statute of repose.
These are legally distinct. The limitations period runs from accrual or discovery; the repose period runs from a fixed triggering event (date of manufacture, date of last treatment) and cannot be extended by tolling. Product liability and medical malpractice claims are subject to both — and must satisfy both.

Misconception: A defendant's absence from Illinois automatically tolls the period.
The Illinois Supreme Court and legislature have substantially narrowed the non-residency tolling provision previously found in 735 ILCS 5/13-208. Long-arm jurisdiction and registered agent service have reduced the practical application of absence-based tolling in most civil cases.

Misconception: Criminal limitations periods apply uniformly by offense class.
Illinois law creates carve-outs within offense classes. Sexual offenses against minors, financial exploitation of elderly persons, and certain public corruption charges each carry extended — sometimes indefinite — periods that override the standard class-based schedule under 725 ILCS 5/3-5.

Misconception: The limitations period can be waived by agreement.
Parties generally cannot contractually shorten or extend Illinois statutory limitations periods in ways that violate public policy. Illinois courts have struck contractual limitations clauses that reduced periods below the statutory minimum, particularly in consumer and insurance contexts.

Checklist or steps (non-advisory)

The following sequence describes the procedural steps involved in assessing and acting on a limitations deadline in Illinois civil proceedings. This is a structural description of the process, not legal advice.

1. Identify the claim type — determine whether the matter sounds in tort, contract, malpractice, fraud, or another recognized category under Illinois law, as each carries a distinct statutory period under 735 ILCS 5/Article XIII.
2. Determine the accrual date — establish when the cause of action first accrued: the date of injury, date of discovery (where the discovery rule applies), or date of the last wrongful act.
3. Check for applicable repose statutes — verify whether the claim type (medical malpractice, product liability, construction defects under 735 ILCS 5/13-214) is subject to a repose period that may cut off the claim independently of accrual.
4. Identify the defendant's status — determine whether the defendant is a private party, a local governmental entity, the State of Illinois, or a federal agency, as governmental status changes the applicable period and may trigger notice requirements.
5. Assess tolling factors — evaluate whether minority, legal disability, fraudulent concealment, or active military service (under the federal Servicemembers Civil Relief Act, 50 U.S.C. § 3901 et seq.) applies to extend the deadline.
6. Calculate the filing deadline — apply the identified limitations period from the established accrual date, accounting for any confirmed tolling periods, and note the outer repose date if applicable.
7. Confirm court filing requirements — verify that the complaint will be filed, not merely served, before the deadline, and that the correct court has subject matter jurisdiction per the Illinois court system structure.
8. Document the limitations analysis — record the basis for the accrual date determination and any tolling arguments in writing, as this analysis may be contested at the pleading or summary judgment stage.

Reference table or matrix

The following table summarizes key Illinois civil and criminal limitations periods by claim type, drawn from the Illinois Compiled Statutes as published by the Illinois General Assembly at ilga.gov.