Illinois Landlord-Tenant Laws
Illinois Security deposits
Illinois sets no cap on security deposits, and in buildings of five or more units the landlord must send an itemized damage statement with receipts within 30 days of move-out and return the balance — or, if no valid statement is sent, the full deposit — within 45 days.
Illinois Rent increase notice
Illinois has no statute setting a notice period for rent increases; the effective floor for a month-to-month tenancy is the termination rule in 735 ILCS 5/9-207 — 30 days' written notice — because a tenant who rejects the new rent is on notice the tenancy can end on that same timeline.
Illinois Late fees
Illinois sets no statewide cap on residential late fees and mandates no grace period — the Landlord and Tenant Act is silent on them — so a late fee must appear in the lease to be collectable and, if challenged, is tested under general contract law as liquidated damages rather than a penalty.
Illinois Entry notice
Illinois has no statewide statute requiring advance notice before a landlord enters an occupied rental unit — the lease governs entry, backstopped by the tenant's right to quiet enjoyment, and 24 hours' notice at reasonable times is the convention courts expect where the lease is silent.
How this record was verified: Web verification against ilga.gov (official Illinois General Assembly ILCS database) for the Security Deposit Return Act (765 ILCS 710), Security Deposit Interest Act (765 ILCS 715), Landlord and Tenant Act (765 ILCS 705), Rent Control Preemption Act (50 ILCS 825), and 735 ILCS 5/9-207, with statute text confirmed via current-year compiled-statute mirrors of the ilga.gov database and IDFPR official guidance on deposit interest rates.