Illinois Security Deposit: Check What You’re Owed
In Illinois, landlords must return your security deposit within 30-45 days.
If they don’t, you may be entitled to up to 2x your deposit in penalties under IL 765 ILCS 710.
30-45 days
Return deadline
2x
Penalty
$2,400
Max recovery*
Check what your landlord owes you
Free. No signup required.
Want us to handle it for you?
The free template works great on its own. But if you want more firepower:
Here’s what your Illinois demand letter looks like:
Formal Demand Letter
Re: Security Deposit — $2,400.00
April 20, 2026
Ref: IL-SD-2026
Dear Property Management Group LLC,
I am writing to formally demand the return of my security deposit in the amount of $2,400.00, which you have unlawfully withheld beyond the legally required timeframe.
Demand is hereby made for the full return of $2,400.00, plus statutory damages of $2,400.00, within 14 days.
Certified Mail Service
$19- Professionally formatted on letterhead
- Sent via USPS Certified Mail with tracking
- Delivery proof creates a legal paper trail
- Landlords take third-party letters 10x more seriously
Full Recovery Package
$149- Everything in Certified Mail, plus:
- Lease & evidence review for every violation
- Small claims court forms pre-filled
- Follow-up if landlord ignores the letter
- 100% money-back guarantee
How long does a landlord have to return a security deposit in Illinois?
Under Illinois law, landlords must return your security deposit within 30-45 days of your move-out date. This includes providing an itemized list of any deductions (for damage beyond normal wear and tear, unpaid rent, or cleaning costs). If your landlord misses this deadline or fails to provide an itemized list, they may be in violation of Illinois state law.
Illinois Security Deposit Penalties
Illinois provides strong tenant protections. If your landlord fails to return your deposit on time, you may be entitled to recover up to 2x deposit. Based on the average US security deposit of $1,200, this means you could recover up to $2,400.
Common Reasons Landlords Illegally Withhold Deposits
- Claiming damage beyond normal wear and tear (faded paint, minor scuffs, carpet wear)
- Charging excessive cleaning fees not specified in the lease
- Deducting for “repairs” to pre-existing conditions
- Claiming unpaid rent or utilities without documentation
- Failing to provide itemized deductions within 30-45 days
- Simply hoping the tenant won’t fight back
How to Get Your Security Deposit Back in Illinois
- Document everything. Take photos of the unit at move-out, keep copies of your lease, and save any written communication with your landlord.
- Wait for the deadline to pass. Illinois gives landlords 30-45 days to return your deposit.
- Send a formal demand letter. A written demand letter citing Illinois’s specific laws creates a legal paper trail. Use our free tool above to check your case.
- File in small claims court.If your landlord ignores the demand letter, you can file a small claims case. Most deposit cases are straightforward and don’t require a lawyer.
Frequently Asked Questions
Do I need a lawyer for a security deposit dispute in Illinois?
No. Security deposit cases are typically handled in small claims court where lawyers are not required (and often not allowed). A formal demand letter is usually enough to resolve the dispute before it ever gets to court.
How much can I recover in Illinois?
Up to 2x deposit. On an average $1,200 deposit, that could be as much as $2,400.
What if my landlord still refuses after the demand letter?
File a case in Illinois small claims court. The certified mail receipt from your demand letter becomes evidence that you tried to resolve it informally — judges look favorably on this.
* Potential recovery based on the average US security deposit of $1,200. Actual amounts depend on your deposit size and case specifics. RefundMyDeposit is not a law firm and does not provide legal advice.