Illinois: miss the 30/45-day deposit deadline and the landlord owes you 2× the deposit + attorney’s fees. Claim the penalty — $29

Illinois · State-specific documents

In Illinois, a late deposit return costs your landlord double.

The Illinois Security Deposit Return Act is unambiguous: if the landlord misses the 30-day deadline (no deductions) or 45-day deadline (with itemized deductions), they owe you twice the deposit + court costs + attorney’s fees. In Chicago, the RLTO adds its own penalties. But you have to assert it.

The statutory damages aren’t automatic. Your landlord has to know you’ll claim them.

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1.6M

Renter households in Illinois

30/45

Days to return the deposit — or face penalties

2×

Statutory damages for late returns

Illinois’s specific rules.

Illinois has two deposit regimes: the statewide Security Deposit Return Act and, for Chicago tenants, the Residential Landlord and Tenant Ordinance. Both are strict. Here’s what applies to you.

765 ILCS 710/1(a)

Deposit return: 30 days (no deductions)

For residential buildings with 5 or more units, the landlord must return the full deposit within 30 days of the tenant vacating — if no deductions are claimed.

If deductions are claimed, the landlord must send an itemized statement within 45 days, along with the balance.

765 ILCS 710/1(b)

Willful violation: 2× + attorney’s fees

A landlord who willfully fails to comply with the 30/45-day deadline is liable for:

An amount equal to twice the security deposit, plus court costs and reasonable attorney’s fees.

This applies to buildings with 5+ units. For smaller buildings, the common-law remedy still applies.

Chicago RLTO § 5-12-080

Chicago: 45 days + 2× + interest

Chicago’s Residential Landlord and Tenant Ordinance applies to most rental units within city limits. It requires:

45-day return, deposit held in a separate interest-bearing account, an annual interest payment to the tenant, and 2× damages + attorney’s fees for violations.

735 ILCS 5/9-207

Notice period: 30 days (month-to-month)

For a month-to-month tenancy in Illinois, either party must give 30 days’ written notice to terminate.

The notice must end on the next rent-due date.

Joint and several liability

You’re on the hook for their share

Illinois leases default to joint and several liability. If your roommate stops paying after moving out, your landlord can pursue you for the full remaining rent.

765 ILCS 705/0.01

What landlords can deduct — and what they can’t

Deductions are only allowed for: unpaid rent, actual damage beyond ordinary wear and tear, and reasonable cleaning costs.

Normal wear and tear — including faded paint, minor scuffs, and worn carpet — cannot be deducted.

What happens in Illinois if you do nothing.

A factual sequence — not a worst case. The standard outcome of a roommate departure without documentation.

Day 1

Your roommate moves out — no written notice on file.

No date. No forwarding address. Nothing that can be produced later.

Day 30

Return deadline passes — silently.

Under 765 ILCS 710, the deposit was due back by now. Failure triggers 2× statutory damages + attorney’s fees. But only if demanded.

Day 45

Itemization deadline passes — silently.

If deductions were intended, the itemized statement was due by now. Same penalty. In Chicago, the RLTO adds interest + separate penalties.

Day 90

Court summons. Judgment filed.

Joint and several liability. An Illinois judgment can follow you for years. Everything before this was preventable.

What you lose if you don’t act.

Average amounts Illinois tenants are exposed to when they leave a shared lease without documents.

Three numbers most Illinois tenants never see coming.

$12,400 Average remaining rent an Illinois landlord can pursue from any single tenant on the lease.
$2,400 Average Illinois deposit forfeited when tenants don’t assert the 30/45-day rule. Double that in statutory damages, plus attorney’s fees.
7 years How long an Illinois judgment stays on your credit report — blocking future rentals, loans, and jobs.

What you get for Illinois.

Each document is formatted to Illinois statutes (and Chicago’s RLTO where applicable) and personalized with your details. Depending on your situation, four to six documents.

Notice to Landlord of Tenant Departure

Cites 735 ILCS 5/9-207 and applies the correct 30-day notice for your month-to-month tenancy.

Forwarding Address Letter

Standalone letter with certified-mail instructions to preserve the 30/45-day clock under 765 ILCS 710.

Willful Violation Demand Letter

Cites the 765 ILCS 710/1(b) statutory damages remedy — 2× the deposit + attorney’s fees. Includes Chicago RLTO language for city tenants.

Roommate Release Agreement

Three-party agreement signed by you, the remaining tenant(s), and the landlord.

Move-Out Documentation Checklist

Photo protocol, video timestamps, and key-return log to defend against damage claims and support a willfulness argument.

New Occupant Addendum

Adds a replacement tenant to the lease with the landlord’s written consent.

Claim the statutory damages

Illinois owes you 2× the deposit only if you demand it.

The willful-violation penalty isn’t automatic. Your landlord has to know you’ll claim it. Your documents will be ready in five minutes.

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Illinois-specific questions.

How much notice do I need to give in Illinois?

For a month-to-month tenancy, Illinois requires 30 days’ written notice under 735 ILCS 5/9-207. The notice must end on the next rent-due date. Our Notice template applies the correct deadline for your situation.

When does my landlord have to return my deposit in Illinois?

Under the Illinois Security Deposit Return Act (765 ILCS 710), for buildings with 5 or more units: if no deductions are claimed, the deposit must be returned within 30 days of move-out. If deductions are claimed, an itemized statement must be sent within 45 days. In Chicago, the RLTO requires a 45-day return and interest payments on the deposit.

What is the penalty if my landlord misses the deadline in Illinois?

Under 765 ILCS 710/1(b), a landlord who willfully fails to comply with the 30/45-day deadline is liable for an amount equal to twice the security deposit, plus court costs and reasonable attorney’s fees. In Chicago, the RLTO adds its own penalties. Our Willful Violation Demand Letter cites both.

Does the Illinois law apply to my building?

The Illinois Security Deposit Return Act applies to residential buildings with 5 or more units. If you live in a smaller building, the common-law remedy for wrongful retention still applies — you can sue for the return of the deposit plus damages. Chicago tenants are covered separately by the Residential Landlord and Tenant Ordinance (RLTO), which applies to most rental units within city limits.

What can my landlord deduct from my deposit in Illinois?

Deductions are only allowed for: unpaid rent, actual damage beyond ordinary wear and tear, and reasonable cleaning costs. Normal wear and tear — faded paint, minor scuffs, worn carpet — cannot be deducted. If your landlord tries to charge you for these, our kit includes language to contest it.

Can my landlord sue me for the remaining lease if my roommate stays?

Yes. Illinois leases use joint and several liability by default. Your landlord can pursue any single tenant for the full remaining rent — regardless of who moved out. The only way to exit this liability is a signed release from the landlord, which our Roommate Release Agreement documents.

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Disclaimer: BreakupLease is not a law firm and does not provide legal advice. The information and documents provided are for educational and informational purposes only. Laws vary by state and change over time. No outcome is guaranteed. For advice specific to your situation, please consult a licensed attorney in your jurisdiction.