A landlord in Illinois can legally deduct the following from the security deposit: unpaid rent, damage to the unit, and charges specified in the lease.
However, repairs and restorations are not chargeable against the security deposit if they are for that damage was caused by normal wear and tear, or existed before the tenant moved in.
Questions? To chat with a landlord tenant attorney, Click here
The information for this answer was found on our Illinois Security Deposit Law answers.