How much notice is required to raise the rent in Illinois?

Verified July 8, 2026 All Illinois topics →

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 has no statewide rent control, and the Rent Control Preemption Act of 1997 (50 ILCS 825) bars every Illinois city and county from enacting residential rent control or rent stabilization. Repeal bills are introduced regularly in Springfield but none has passed.

Illinois rent increase notice at a glance

Notice — month-to-month	No rent-increase statute — notice derives from tenancy-termination rules (see summary)
Varies by increase size	Not addressed by statute
Fixed-term leases	Rent cannot be changed during a fixed term unless the lease provides for it; increases take effect at renewal or via termination-and-reoffer on the 9-207 timeline.
Statewide rent control / stabilization	No
Rent control details	Not addressed by statute
Local rent control preempted	Yes
Frequency limits	Not addressed by statute

Notes and caveats

notice_days_month_to_month is null because the requirement derives from the termination statute (9-207), not a rent-increase statute — page copy must explain the derivation, mirroring MI. Claims circulating online that Illinois limits month-to-month increases to once per year have no statutory basis and must not appear in page copy. Chicago's RLTO notice requirements for lease non-renewal/increases (up to 120 days by tenancy length) are local, out of scope v1, and flagged on-page.

Statute citations

735 ILCS 5/9-207 Official source
50 ILCS 825 (Rent Control Preemption Act) Official source

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.