Rent increase rules in Illinois
Verified against 735 ILCS 5/9-207 and agency sources on 2026-07-04. Not legal advice.
Illinois has no statewide cap on rent increases.
- Notice: No state statute on increase notice; 30-day notice terminates month-to-month (735 ILCS 5/9-207); Chicago's Fair Notice ordinance requires 30/60/120 days based on tenancy length
- Statute: 735 ILCS 5/9-207 · source
Rent Control Preemption Act (50 ILCS 825) bans local rent caps; Chicago's rules govern notice only, not amounts.
Rent increase calculator
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| Required notice (month-to-month) |
Frequently asked questions
How much can a landlord raise rent in Illinois?
There is no statewide limit — any amount, with proper notice. Rent Control Preemption Act (50 ILCS 825) bans local rent caps; Chicago's rules govern notice only, not amounts.
How much notice is required for a rent increase in Illinois?
No state statute on increase notice; 30-day notice terminates month-to-month (735 ILCS 5/9-207); Chicago's Fair Notice ordinance requires 30/60/120 days based on tenancy length. (735 ILCS 5/9-207)
Can rent be raised during a lease in Illinois?
No — as everywhere in the US, a fixed-term lease locks the rent unless the lease itself contains an escalation clause. Increases take effect at renewal or on periodic (month-to-month) tenancies with the notice above.
What changed recently in Illinois?
Rent Control Preemption Act (50 ILCS 825) bans local rent caps; Chicago's rules govern notice only, not amounts.
Rent increase rules in other states
All states · Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · District of Columbia · Florida
Related: deposit interest rules in Illinois · vacancy cost calculator