Illinois Self Defense Laws

Self-defense statutes are some of the most debated laws in America today. About half of all states have affirmative “stand your ground” laws. These self-defense laws specifically state that you have no duty to retreat before using force to defend yourself or others. A few states have laws requiring you to retreat if you can do so safely before the use of deadly force.

The remaining states, like Illinois, have affirmative self-defense laws. These laws require defendants to prove that they believed they were in imminent danger of serious bodily harm or death and that they used reasonable force against the aggressor under the circumstances.

Illinois Self-Defense Laws

Illinois law states that you may defend yourself if you think you have a reasonable belief of imminent harm. The threat must be immediate. You cannot defend yourself against a threat that might happen in the future. To claim a justifiable use of force, you must also show:

• The use of force was proportionate to the force used against you. Use of deadly force is only permitted if you fear imminent death, serious bodily injury, or to prevent the commission of a forcible felony.
• You must be in a place you are legally allowed to be, performing a lawful act. Self-defense situations do not apply to lawful arrests by law enforcement.
• Illinois does not require you to retreat unless you were the initial aggressor (People v. McGraw 1958). In a self-defense claim, it must be clear that you had no choice but to use force against your attacker.

Castle Doctrine

Illinois’s version of the “castle doctrine” lets you defend yourself inside your residence without having to retreat. Use of deadly force or force likely to cause great bodily harm is lawful when either:

• You reasonably believe the intruder plans to commit a violent crime in the building
• The intruder enters in a violent or “tumultuous manner”

Unlike some states, Illinois has not expanded the castle doctrine to apply to other locations, such as a business or a vehicle.

Defense of Other Property

You can use force to prevent unlawful entry onto or theft of other property if it is your own property or property you have a legal duty to protect. As with other uses of force in defense of person or defense of dwelling, your response must be proportionate to the force used. You may only use lethal force to prevent the commission of a forcible felony.

Note: State laws are subject to change through the passage of new legislation, court rulings (including federal decisions), ballot initiatives, and other means. FindLaw strives to provide the most current information available. You should consult an attorney or conduct your own legal research to verify the state law(s) before making any legal decisions.

Illinois Self-Defense Laws: Related Resources

• Illinois Criminal Statute of Limitations Laws
• Illinois Criminal Laws
• States That Have Stand Your Ground Laws

Get Legal Advice From an Illinois Criminal Defense Attorney

If you use any degree of force in a self-defense situation in Illinois, you must present an affirmative defense in court. Legal help from an experienced Illinois criminal defense attorney can make a huge difference. Your lawyer can present the key facts in your case to show you did the most reasonable thing under the circumstances.