Illinois Security Deposit Demand Letter Template
If your Illinois landlord hasn't returned your security deposit within 45 days of your move-out date, a formal demand letter is your most effective next step. It puts your landlord on notice that you know your rights under 765 ILCS 710 (Security Deposit Return Act), creates a paper trail for court, and resolves most disputes without ever filing a lawsuit.
Illinois Law Quick Reference
Return Deadline45 days
PenaltyMay be liable for deposit amount plus damages and court costs
What to Include in Your Illinois Demand Letter
1Your full name and current address
2The rental property address
3Your move-out date
4The deposit amount paid
5The 45-day deadline and the specific date it expired
6Citation of 765 ILCS 710 (Security Deposit Return Act)
7A clear statement of the amount demanded
8A deadline for response (typically 7-14 days)
9A statement that you will pursue legal action if not resolved
Tips for an Effective Demand Letter in Illinois
- -Send via certified mail with return receipt requested
- -Keep the tone professional and factual
- -Reference the specific statute (765 ILCS 710 (Security Deposit Return Act))
- -Keep a copy for your records
- -Include copies of supporting documentation (lease, photos, etc.)
Generate Your Free Illinois Demand Letter
Use our free generator to create a demand letter customized with Illinois's specific laws, deadlines, and penalties.
Generate my demand letterWhat Happens After You Send the Letter
1Most landlords respond within 7-14 days of receiving a formal demand letter
2If they return the deposit, make sure to get a receipt confirming the amount received
3If they don't respond, you can file in small claims court — your demand letter and certified mail receipt serve as evidence