Illinois does not have statewide rent control in 2026, which means landlords can generally raise rent by any amount as long as they follow notice rules and anti‑discrimination laws. Tenants still have protections built into lease terms, retaliation rules, and local ordinances in a few cities, but there is no cap on rent‑increase percentages across the state.
How much can rent go up?
Illinois law does not limit how much a landlord can increase rent from one year to the next, so a sizable jump—such as hundreds of dollars—is legally possible if the lease or local rules allow it. The key limits are:
- No increase during a fixed‑term lease unless the lease explicitly permits mid‑lease hikes.
- No increase based on a tenant’s race, religion, disability, family status, or other protected class under federal and Illinois fair‑housing laws.
Notice periods to expect
Statewide law does not set a single notice period, but common practice and some local rules require advance written notice before a rent rise. Typical patterns include:
- Month‑to‑month tenants: at least 30 days’ written notice before the new rent takes effect.
- Fixed‑term leases: rent can only change at renewal, and the landlord must announce the new amount before the lease ends, often with 30–60 days’ notice depending on the lease language and local custom.
Tenants should always check their lease; if the lease promises “no increase during the term,” the landlord generally cannot raise rent until the next renewal.
Protection against retaliatory hikes
Illinois has strengthened tenant protections against retaliatory rent increases, especially under the Landlord Retaliation Act effective January 1, 2025 and still in force in 2026. Landlords cannot legally raise rent, refuse renewal, or cut services simply because a tenant complains about unsafe conditions, reports code violations, or otherwise exercises legal rights.
If an increase follows closely after such activity, it may be viewed as retaliation and challengeable in court or administrative proceedings.
Local rules and new lease requirements
While Illinois forbids most local rent‑control programs, some cities have specific notice or documentation rules that can affect how rent increases are handled. In addition, a 2026 change requires landlords to include a state‑issued “Summary of Rights for Safer Homes” as the first page of every written lease and renewal, helping tenants quickly see protections on rent, safety, and disclosures.
SOURCES:
- https://www.hemlane.com/resources/illinois-rent-control-laws/
- https://www.steadily.com/blog/rent-increase-laws-regulations-illinois
