Security Deposit Demand — Illinois

What this Illinois letter does

A security-deposit demand letter is the formal written demand for the return of your deposit after you have moved out. It is almost always the right first step before suing in small-claims court — and it often resolves the matter without a lawsuit.

How Illinois handles this

Under Illinois Security Deposit Return Act, 765 ILCS 710/1, your landlord was required to return your deposit (or send an itemized statement of any deductions) within 45 days of your move-out. The itemized statement of deductions is due within 30 days; the refund within 45 days. Applies to all residential rentals since Jan. 1, 2024 (P.A. 103-224). If they failed to do either, the deposit is wrongfully retained and the law allows you to recover twice the amount wrongfully withheld plus court costs and attorney fees.

Statute last reviewed June 2026. Moving, or curious how Illinois compares? See the 50-state table →

What to expect after you send it

Landlords often respond once they receive a formal demand letter that cites the statute and sets a hard deadline — returning the deposit or sending the itemized statement within the period you set. If yours does not, the next step is small-claims court in Illinois.

Sample Security Deposit Demand letter — Illinois

Bracketed fields are placeholders — the generator fills them from your answers and applies the correct statutory citations for your jurisdiction.

[YOUR FULL NAME]
[YOUR CURRENT MAILING ADDRESS]

July 24, 2026

[LANDLORD OR PROPERTY-MANAGER NAME]
[LANDLORD MAILING ADDRESS]

Re:  Demand for Return of Security Deposit
     [PROPERTY YOU RENTED]

Dear [LANDLORD OR PROPERTY-MANAGER NAME]:

I, [YOUR FULL NAME], am writing to demand the immediate return of my security deposit in the amount of $[AMOUNT] from the lease at [PROPERTY YOU RENTED] in Illinois, which I vacated on [date].

Pursuant to Illinois Security Deposit Return Act, 765 ILCS 710/1, you were required to return the deposit (or provide an itemized statement of deductions) within 45 days of the termination of my tenancy. As of the date of this letter, neither the deposit nor an itemized accounting has been received.

Accordingly, I hereby demand the full return of $[AMOUNT] within 7 days of receipt of this letter.

Failure to comply may result in legal action pursuant to Illinois Security Deposit Return Act, 765 ILCS 710/1, which permits recovery of twice the amount wrongfully withheld plus court costs and attorney fees. I am prepared to pursue all available remedies, including filing in Illinois small-claims court.

Please remit payment to me at the address shown above.

Sincerely,



[YOUR FULL NAME]

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Common mistakes to avoid in Illinois

• Sending only an email or text. Send a printed letter to the address on your lease (or the address where you sent rent), and keep a copy. Email is fine as a second channel.
• Not including a hard deadline. "Soon" is not a deadline. State the number of days and the date.
• Confusing wear-and-tear with damage. Ordinary wear (faded paint, worn carpet) is not deductible from your deposit; actual damage (large stains, holes in walls) usually is.
• Throwing away your photos. Move-in and move-out photos are decisive evidence if this ends up in court.
• Waiting too long. Some states require you to act within a year or two; do not let the clock run.

If your letter is ignored

• If you get the deposit back within the deadline, you are done.
• If you get an itemized statement you disagree with, you can respond in writing or file in Illinois small-claims court for the difference.
• If you get no response, file in Illinois small-claims court. Many filing fees are under $100 and you do not need a lawyer.
• Bring your lease, the demand letter (with proof of delivery), your move-in and move-out photos, and any text or email exchange about the deposit.

How to generate your Illinois letter

Five steps, usually under ten minutes total.

1. Sign in or create an account. Only your email and a password are required — no card until you unlock your finished letter.
2. Click "Start my letter". On any Security Deposit Demand page, click the Start button. We create a draft you can come back to.
3. Fill in your facts. Names, addresses, dates, and amounts. Plain-language prompts guide every field. Save as a draft if you need to gather information.
4. Click Finalize. Traquor renders your letter with your state's statutory citations and notice periods where they apply.
5. Print or save as PDF. Your finalized letter is in a clean paper layout. Use your browser to print or save as a PDF, then mail, email, or hand-deliver.

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