Resisting Arrest in Illinois: Penalties, Felonies, and Defenses

Resisting arrest in Illinois is a Class A misdemeanor under 720 ILCS 5/31-1, and a conviction carries a mandatory minimum of 48 consecutive hours in county jail or 100 hours of community service that no judge can waive.¹ If the officer is injured during the encounter, the charge becomes a Class 4 felony punishable by one to three years in prison. The charge almost always rides along with another offense, and whether it holds up usually turns on three questions: did you know the person was an officer, were they performing a lawful duty, and did you do something physical to resist?

What Counts as Resisting Under Illinois Law

The statute reaches a person who knowingly resists an arrest or knowingly obstructs an authorized act performed by someone they know to be a peace officer, firefighter, or correctional institution employee.¹ Every word in that definition carries weight at trial.

“Knowingly” requires that you understood you were dealing with an officer acting in an official capacity. A uniformed officer giving verbal commands is one thing; a plainclothes officer who never identifies themselves is a much weaker foundation for the charge.

“Authorized act” means the officer was performing a lawful duty — an arrest, warrant service, maintaining order, or conducting an investigation. If the officer stepped outside their legal authority, that element can be challenged.¹

The third requirement is where most cases are won or lost: there has to be a physical act. The Illinois Supreme Court held in People v. Raby that “resisting” and “obstructing” both imply physical exertion and do not cover arguing with an officer about the validity of an arrest.² The law targets physical obstacles that impede, hinder, or delay official duties.

Actions that typically meet the threshold include pulling an arm away during handcuffing, bracing your feet against a vehicle to prevent being removed, grabbing a steering wheel when ordered to exit, or physically fleeing a lawful detention. In People v. Carter, officers testified that the defendant pulled away during attempts to remove him from a vehicle and braced his feet inside to resist.³ Going limp has been treated as a physical act by some courts because it forces officers to exert more effort. Refusing to identify yourself or declining to answer questions, standing alone, does not qualify.²

Arguing With Police Is Not Resisting

People are regularly arrested for resisting after heated verbal exchanges. Arguing, cursing, or shouting at an officer is generally protected by the First Amendment. The U.S. Supreme Court said so plainly in City of Houston v. Hill: “The freedom of individuals verbally to oppose or challenge police action without thereby risking arrest is one of the principal characteristics by which we distinguish a free nation from a police state.”⁴

The Court added that officers must respond with restraint to verbal challenges because “a certain amount of expressive disorder” is inevitable in a free society.⁴ Calling an officer names during a traffic stop is not resisting arrest under Illinois law, however unwise the choice might be.

Misdemeanor Penalties

The baseline Class A misdemeanor carries a maximum jail sentence of less than one year and a fine of up to $2,500.⁵ What sets this charge apart from most misdemeanors is the mandatory floor: at least 48 consecutive hours in county jail or at least 100 hours of community service. The statute specifically bars using probation to reduce the mandatory sentence.¹ The minimum applies on top of any sentence for the underlying offense, so a defendant convicted of both faces stacked penalties.

Court costs and administrative fees vary by county and can add hundreds of dollars to the fine on paper.

When Resisting Becomes a Felony

The charge becomes a Class 4 felony when the resistance or obstruction is the proximate cause of an injury to the officer, firefighter, or correctional employee.¹ Even minor injuries from a struggle can trigger the upgrade: a scraped hand, a twisted wrist, a bruised shoulder.

A Class 4 felony carries one to three years in prison, or three to six years on an extended term, with one year of mandatory supervised release after release from custody.⁶ Fines can reach $25,000.

The prosecution has to prove causation. If the officer was hurt by their own momentum or by tripping during a chase, the defense can argue the injury was not proximately caused by the defendant’s resistance. Medical records and body camera footage usually decide the question.

Defenses to a Resisting Charge

Several defenses can defeat or weaken the charge depending on the facts.

Lack of knowledge. If you genuinely didn’t know the person was a law enforcement officer, the “knowingly” element fails. Plainclothes officers who don’t identify themselves create this opening, and the prosecution carries the burden of proving you knew.
No authorized act. The officer must have been performing a lawful duty. If the stop, search, or arrest lacked legal basis, a required element of the charge is missing.¹
No physical act. Verbal disagreement, refusing to answer questions, and similar non-physical conduct do not satisfy the statute. If the only “resistance” was words, the charge should not hold up.²
Self-defense against excessive force. Illinois recognizes self-defense as an affirmative defense when an officer uses excessive force during an arrest. The U.S. Supreme Court’s Graham v. Connor framework evaluates force by what a reasonable officer in the same situation would have used. The defense is hard to win because the defendant bears the burden of showing the force was excessive and the response proportional.

Even when the underlying arrest turns out to have been unlawful, Illinois courts strongly discourage physical resistance. Experienced defense attorneys give the same advice: comply on the street and challenge the legality in court. Beating a resisting charge through the unlawful-arrest route is possible, but it is far harder than defeating the underlying charge and letting the resisting count fall with it.

Why Resisting Is Almost Always an Add-On

Under the “resists arrest” prong of the statute, there has to be an arrest in progress, which means the officer needed grounds to arrest you for something else. The “obstructing” prong is broader and can reach interference with an investigation or other authorized act, but prosecutors still generally pair it with an underlying offense.

That pairing gives the charge weight in plea negotiations. Prosecutors sometimes offer to drop the resisting count in exchange for a guilty plea on the primary offense, or the other way around. When the underlying charge is weak, a standalone resisting count may not survive, because there is no clearly authorized act to have been obstructed.

Disarming an Officer Is a Different Crime

Taking or attempting to take a weapon from someone known to be a peace officer or correctional employee is prosecuted under a separate statute, 720 ILCS 5/31-1a. Successfully taking a weapon is a Class 1 felony; attempting to do so is a Class 2 felony.⁷ A Class 1 felony carries 4 to 15 years in prison, which puts this in a different category from any standard resisting charge. If a struggle came anywhere near an officer’s weapon, expect this charge to appear alongside the resisting count.

What a Conviction Leaves Behind

A misdemeanor conviction stays on your criminal record and shows up on background checks for employment, housing, and professional licensing. Because the offense involves confrontation with law enforcement, many employers view it more negatively than other misdemeanors like disorderly conduct. The mandatory minimum of jail or community service also means there is no path to a pure court supervision disposition that would avoid a conviction entirely.

A felony conviction brings heavier collateral damage. Beyond the prison sentence, a Class 4 felony can affect voting rights during incarceration, professional licensing eligibility, and future employment. Illinois does allow petitions to seal or expunge certain criminal records after waiting periods, but the path to relief for a felony is narrower than for a misdemeanor.

1
Illinois General Assembly. Illinois Code 720 ILCS 5/31-1 – Resisting or Obstructing a Peace Officer, Firefighter, or Correctional Institution Employee
2
Illinois Courts. People v. Synnott
3
Appellate Court of Illinois, Fifth District. People v. Esley Carter, 2024 IL App (5th) 220299-U
4
Justia. City of Houston v. Hill, 482 U.S. 451 (1987)
5
Illinois General Assembly. Illinois Code 730 ILCS 5/5-4.5-55 – Class A Misdemeanor
6
Illinois General Assembly. Illinois Code 730 ILCS 5/5-4.5-45 – Class 4 Felony
7
Illinois General Assembly. Illinois Code 720 ILCS 5/31-1a – Disarming a Peace Officer or Correctional Institution Employee