A Class 4 felony is the least serious of all felony charges in Illinois. In Illinois, crimes are classified according to how serious they are, with misdemeanors being less serious than felonies. Within the category of felonies, offenses are further divided into five different classes in Illinois, ranging from the most serious Class X felonies to the least serious Class 4 felonies. Although a Class 4 felony has lower penalties than other felony charges, it can still result in prison time, fines, and other penalties.

The possible sentences for a Class 4 felony in Illinois range from probation to 1 to 3 years of prison. A prison sentence for a Class 4 felony conviction must fall within 1 to 3 years under Illinois law. Class 4 felony convictions can also include fines of up to $25,000. Certain types of criminal offenses tend to be classified as Class 4 felonies by Illinois courts, including aggravated assault, drug possession of a controlled substance, driving on a revoked driver’s license, and more.