The Illinois Landlord Retaliation Act: What Counts as Retaliation (and the 1-Year Trap)

In 2025, Illinois threw out its narrow 1963 retaliatory-eviction law and replaced it with something far broader and sharper: the Landlord Retaliation Act (765 ILCS 721), effective January 1, 2025. The old law was mostly about eviction. The new one covers rent increases, service cuts, and non-renewals too — any adverse move made because a tenant exercised their rights. And it comes with a one-year presumption that flips the burden of proof onto you. Here's what actually counts as retaliation, and how to keep a legitimate business decision from looking like payback.

What the Act Prohibits

You cannot take an adverse action against a tenant because they engaged in a protected activity. "Adverse action" is broad — it includes evicting or terminating the tenancy, raising the rent, reducing services, refusing to renew a lease, and even threatening to do any of those. The old law's narrow focus on eviction is gone; the everyday levers landlords pull are all covered now.

What Counts as Protected Tenant Activity

The list is wider than most landlords assume:

• Complaining to a government or code-enforcement agency about the property
• Requesting repairs or asserting habitability rights
• Complaining to a community organization or the news media
• Organizing or joining a tenant union
• Exercising any other right or remedy under the lease or the law

The One-Year Trap

This is the part that catches landlords off guard. If you take an adverse action within one year of a tenant's protected activity, the law presumes it was retaliatory. The burden flips to you to prove a legitimate, non-retaliatory reason. Timing alone builds the tenant's case: raising the rent two months after a tenant filed a code complaint looks like retaliation even when the increase was planned all along — and now you're the one who has to prove otherwise.

The Cost of Getting It Wrong

The penalties have real teeth. A tenant can recover the greater of two months' rent or two times their actual damages, plus reasonable attorney's fees, plus remedies like restored possession or termination with a deposit refund. The attorney's-fees piece is what makes even a small retaliation claim worth a tenant lawyer's time — the same dynamic that makes deposit mistakes so expensive.

How to Protect Yourself

• Document the legitimate reason before you act. Nonpayment records, dated lease-violation notices, or a rent increase scheduled independent of any complaint — build the paper trail first.
• Mind the timeline. If a tenant recently complained or requested repairs, assume the one-year clock is running and be deliberate about anything that looks adverse.
• Be consistent. Apply rent increases and renewal decisions the same way across tenants, so no single tenant's action looks singled out.
• Don't threaten. Even a threatening message ("keep complaining and you're out") can be the violation, separate from whether you follow through.

How It Interacts With Your Other Moves

The Retaliation Act overlays everything else you do. A perfectly valid non-renewal, a lawful rent increase, or a legitimate lease termination can still be challenged as retaliatory if the timing is bad and you can't show a clean, documented reason. It doesn't take those tools away — it just means the why and the when now matter as much as the how.

For the full picture, see our rundown of all the 2026 Chicago & Illinois landlord law updates.

Key Takeaways

• The Landlord Retaliation Act (765 ILCS 721) is law — effective January 1, 2025, statewide including Chicago
• It bans eviction, rent hikes, service cuts, non-renewal, or threats done in response to protected tenant activity
• Protected activity = code complaints, repair requests, contacting community orgs or media, tenant-union organizing, and exercising legal rights
• A one-year rebuttable presumption means adverse action within a year of protected activity is presumed retaliatory — the burden flips to you
• Damages = greater of two months' rent or 2× actual damages, plus attorney's fees and possession/deposit remedies
• Protect yourself by documenting legitimate reasons in advance, watching the timeline, and applying policies consistently