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Generate Illinois Demand LetterIllinois Security Deposit Laws (2026 Guide)
Illinois renters have strict timelines protecting their security deposits.
Research Notice
This guide summarizes publicly available legal information. Laws change over time, and legal outcomes depend heavily on both state law and your individual facts. Always verify current laws or consult a qualified attorney before making important legal decisions.
What You'll Learn
Used to create state-specific security deposit demand letters based on current landlord-tenant laws.
Illinois Security Deposit Law At a Glance
Illinois Security Deposit Deduction Rules
Allowed Deductions
- •Unpaid rent: Any back rent legally owed under the lease.
- •Damage beyond normal wear and tear: Actual costs of repair or replacement, supported by paid receipts or estimated costs within statutory deadlines.
- •Cleaning costs: If required to return the unit to a habitable condition, beyond normal wear and tear.
- •Other lawful charges: Specific fees outlined in the lease agreement, aside from standard wear.
NOT Allowed
- ✕Normal wear and tear: Routine painting, minor scuffs, or standard carpet wear cannot be deducted under Illinois law.
- ✕Undocumented repairs: If the landlord fails to provide an itemized statement and receipts within 30 days, deductions are invalid.
- ✕Pre-existing damage: Any damage that existed prior to your tenancy.
- ✕Estimated repairs without follow-up: If estimated costs are provided initially, final paid receipts must follow within 30 days of the estimate.
Illinois Statutory Remedies & Bad Faith
If your landlord violated Illinois security deposit laws, you might be entitled to recover more than just your original deposit due to statutory penalties in some jurisdictions. Outcomes depend heavily on the specific facts and documentation of each case. Nothing on this page guarantees a particular legal outcome.
Original Deposit
Example initial withheld amount
Potential Penalty
Under 765 ILCS 710/1(c) upon a circuit court finding of bad faith or refusal to comply
Total Possible
In addition to court costs and reasonable attorney fees
*Legal Disclaimer: Educational concepts and examples shown here are purely hypothetical. Results depend entirely on the specific facts of your case.
Illinois's 30-Day Itemization and 45-Day Return Timelines
Tenant Moves Out
Tenant completely vacates the property and turns over possession.
Itemized Damage Statement (30 Days)
If deducting, landlord must provide an itemized list of damages and paid receipts within 30 days. Source: 765 ILCS 710
Receipts / Estimates Provided
Landlord must provide paid receipts or copies (or follow up within 30 days if estimates were given).
Final Deposit Return / Default (45 Days)
If no damage is claimed, or if 30-day statement was not provided, full deposit must be returned within 45 days. Source: 765 ILCS 710
Demand Letter
If deadlines are missed or deductions are unlawful, formal demand is made.
Court Action
Under 765 ILCS 710/1(c), circuit court may award twice the deposit due plus attorney fees for bad faith or refusal to comply.
Typical Illinois Landlord Withholding Errors
Deposit Never Returned
The most basic violation. The landlord simply ghosts the tenant after move-out.
No Itemized Statement
Keeping money without providing an itemized statement of damages within the 30-day timeline.
Missed Legal Deadline
Taking longer than the 45-day statutory limit to return the full deposit when no itemized statement was provided.
Excessive Cleaning Charges
Charging excessive amounts for minor issues or routine apartment turnover.
Normal Wear and Tear Charged
Using deposit funds to illegally upgrade or repaint an old unit.
Unexplained Deductions
Vague line items like "Repair: $300" with no paid receipts or required context.
What to do if your landlord won't return your deposit
1. Gather Evidence
Collect your lease, move-in/move-out photos, and all written communication with the landlord.
2. Request an Explanation
If they missed the deadline, send a quick message asking for a status update. This proves you tried to resolve it informally.
3. Send a Demand Letter
Draft a formal letter explicitly citing 765 ILCS 710 and giving a firm deadline to respond.
4. Keep Proof of Delivery
Always send your demand letter via Certified Mail so you have a tracking number proving they received it.
5. Consider Small Claims Court
If the demand letter is ignored, you can file a case in Illinois small claims court. The letter serves as an essential piece of evidence.
Illinois Security Deposit Law Explained
Examples of Lawful and Unlawful Security Deposit Deductions
The following examples are educational illustrations only. Whether a deduction is lawful depends on the lease, the available evidence, applicable Illinois law, and the specific facts of each tenancy.
Generally Lawful Examples
- • Unpaid rent owed under the lease.
- • Repairing a broken interior door caused by tenant damage.
- • Replacing a broken window damaged during the tenancy.
- • Repairing a large hole in drywall beyond ordinary use.
- • Cleaning required because the property was left substantially dirtier than its move-in condition.
Generally Not Lawful Examples
- • Routine paint fading from ordinary occupancy.
- • Minor nail holes from normal picture hanging.
- • Normal carpet wear from everyday use.
- • Ordinary aging of appliances.
- • Charges that are not properly supported by the documentation required under applicable Illinois law.
These examples are educational only and do not determine the outcome of any individual dispute.
What Makes Illinois Different?
- Illinois 30-Day Itemized Statement Rule: Under 765 ILCS 710/1(a), if deducting for property damage, the landlord must provide an itemized statement of damages and paid receipts (or estimates) within 30 days of the later of vacating or possession ending.
- Illinois 45-Day Full Return Rule: If no damage is claimed, or if the landlord fails to furnish the required itemized damage statement and paid receipts within 30 days, the security deposit must be returned in full within 45 days of vacating.
- Statewide Applicability: 765 ILCS 710 applies to any lessor of residential real property who has received a security deposit (Public Act 103-0224 removed the former 5-unit threshold, effective January 1, 2024).
- 25-Unit Interest Rule: Under the separate Illinois Security Deposit Interest Act (765 ILCS 715), landlords renting 25 or more units in a single building or complex on contiguous parcels must pay interest on deposits held for more than 6 months.
- Receipt / Estimate Documentation Requirements: Itemized statements must specify estimated or actual costs and include paid receipts or copies (with final receipts due within 30 days if estimated costs are given).
- Statutory Penalties (Bad Faith): Under 765 ILCS 710/1(c), upon a finding by a circuit court that a landlord refused to supply the required statement or acted in bad faith, the landlord is liable for twice the amount of the security deposit due, plus court costs and reasonable attorney fees.
Statewide Applicability of the Security Deposit Return Act
Under current Illinois law (765 ILCS 710/1(a), as amended by Public Act 103-0224, effective January 1, 2024), the Security Deposit Return Act applies to any lessor of residential real property who has received a security deposit.
The former exemption for buildings with fewer than five units was repealed. Whether you rent a single-family home, a condo, a duplex, or an apartment in a large complex, the statutory 30-day itemization and 45-day return requirements protect your deposit.
Note: The separate Illinois Security Deposit Interest Act (765 ILCS 715) maintains its distinct 25-unit threshold for statutory interest obligations.
Chicago Residential Landlord and Tenant Ordinance (RLTO)
Tenants renting property within the City of Chicago may be protected by the Chicago Residential Landlord and Tenant Ordinance (RLTO), which contains additional requirements beyond the statewide Illinois Security Deposit Return Act.
The statewide rules explained throughout this guide may not fully apply to every Chicago tenancy.
- • Chicago may impose additional documentation requirements when security deposit deductions are made.
- • Chicago has separate rules governing security deposit receipts and interest obligations.
- • Certain Chicago timelines and procedures differ from the statewide Illinois Security Deposit Return Act.
- • Rights and remedies available under the Chicago RLTO may differ from those available under statewide Illinois law.
Important Notice
Because Chicago's ordinance is separate from statewide law and may change independently, tenants should verify the rules that apply to their specific rental property.
Additional Local Rules May Apply
Certain Illinois municipalities may provide additional protections beyond statewide law, including specialized local deposit rules and procedures.
Examples include: Chicago, Evanston, Oak Park, Urbana, Mount Prospect, DeKalb, and Suburban Cook County.
Do Illinois Tenants Earn Interest on Security Deposits?
Under the separate Illinois Security Deposit Interest Act (765 ILCS 715), residential rental properties containing 25 or more units (in a single building or complex of buildings on contiguous parcels) may owe interest on security deposits.
- Interest obligations apply when deposits are held for more than 6 months.
- The rate is tied to the passbook savings rate set by the largest commercial bank in Illinois.
- Interest must be paid annually, either as cash or issued as a rent credit.
What Happens if the Property is Sold?
If a rental property is sold during or after a tenancy, responsibility for the tenant's security deposit may transfer to the new owner as provided by applicable Illinois law.
The former or current owner may also have legal responsibilities regarding the transfer or accounting of the security deposit.
Tenants should keep copies of their lease, security deposit receipt, payment records, and any written notices regarding a change in ownership.
If ownership changes and there is uncertainty about who is responsible for returning the security deposit, tenants should request written clarification before assuming the deposit has been forfeited.
Ownership transfers can involve additional legal requirements that depend on the specific facts of the transaction.
The Illinois Deposit Return Timeline
Tenant Moves Out
Tenant fully vacates the property and turns over possession.
Itemized Damage Statement (30 Days)
If the landlord intends to make deductions for damage, they must provide an itemized statement detailing the alleged damages within 30 days of the date the tenant vacated or the date the right of possession ended (whichever is later).
Receipts / Estimates Provided
Alongside the 30-day statement, the landlord must provide paid receipts or copies showing actual costs (or furnish paid receipts within 30 days of providing estimated costs).
Final Deposit Return / Statutory Default (45 Days)
If no damage is claimed, or if the landlord fails to furnish the required 30-day itemized statement and paid receipts, the deposit must be returned in full within 45 days of vacating.
Demand Letter
If the landlord misses statutory deadlines or makes improper deductions, the tenant can send a formal demand letter requesting the return of deposit funds.
Court Action
Under 765 ILCS 710/1(c), upon a finding by a circuit court that the landlord refused to supply the required statement or acted in bad faith, the landlord is liable for twice the amount of the deposit due, plus court costs and reasonable attorney fees.
Receipts, Estimates, and Repair Documentation
Under 765 ILCS 710/1(a), a landlord cannot simply invent a dollar figure for deductions.
- Itemized statements must identify the exact damages and estimated or actual repair costs.
- Paid receipts or copies must accompany the itemized statement to verify actual costs.
- If estimated costs are provided initially, paid receipts or copies must be furnished within 30 days from the date the estimated statement was provided.
- Lack of supporting documentation violates statutory requirements and invalidates deductions.
Why Your Forwarding Address Matters
Under 765 ILCS 710/1(a), tenants should provide a current mailing address or verified email address to their landlord when moving out.
If the tenant fails to provide a mailing address or verified email address, the lessor shall not be held liable for damages or penalties resulting from that failure.
Written communication of your forwarding address is strongly recommended.
Illinois Move-Out Checklist
Before leaving a rental property, tenants can reduce the likelihood of security deposit disputes by documenting the property's condition and keeping important records.
- ✔ Take dated photographs and videos of every room before leaving.
- ✔ Remove all personal belongings and return the property in substantially the same condition, allowing for normal wear and tear.
- ✔ Return all keys, garage remotes, parking passes, and access devices required by the lease.
- ✔ Keep copies of your lease, move-in photos, repair requests, and communications with the landlord.
- ✔ Provide your forwarding mailing address or verified email address in writing before or immediately after moving out.
- ✔ Keep copies of any certified mail receipts or other delivery confirmations for important correspondence.
This checklist is intended to help tenants preserve evidence and reduce factual disputes. It does not replace the requirements of Illinois law or the terms of an individual lease.
Statutory Remedies (Bad Faith)
The Illinois Security Deposit Return Act provides statutory remedies against landlords who refuse to comply or act in bad faith.
- Twice the Amount Due: Under 765 ILCS 710/1(c), upon a finding by a circuit court that the landlord refused to supply the itemized statement required, or supplied it in bad faith, and failed or refused to return the deposit due within statutory time limits, the landlord is liable for an amount equal to twice the amount of the security deposit due.
- Attorney Fees and Court Costs: Under 765 ILCS 710/1(c), the landlord is also liable for court costs and reasonable attorney's fees.
Frequently Asked Questions
How long does a landlord have to return a security deposit in Illinois?
Under the Illinois Security Deposit Return Act (765 ILCS 710/1), a landlord withholding for damage must provide an itemized statement and paid receipts within 30 days of vacating or possession ending. If no damage is claimed, or if the required statement and receipts are not furnished, the deposit must be returned in full within 45 days of vacating.
Does Illinois security deposit law apply to all residential landlords?
Yes. Under current Illinois law (765 ILCS 710/1, as amended by Public Act 103-0224), the Security Deposit Return Act applies to all lessors of residential real property who receive a security deposit, with no minimum unit threshold.
What happened to the old five-unit rule?
Public Act 103-0224, effective January 1, 2024, eliminated the former 5-unit threshold. The statewide Illinois Security Deposit Return Act now protects tenants in single-family homes, condos, duplexes, and apartment buildings alike.
Do Illinois tenants earn interest on security deposits?
Under the separate Illinois Security Deposit Interest Act (765 ILCS 715), lessors of residential property containing 25 or more units (in a single building or complex on contiguous parcels) must pay interest on deposits held for more than 6 months, calculated using the statutory passbook savings rate set by the largest commercial bank in Illinois.
What if the landlord sends estimates instead of receipts?
Under Illinois law, a landlord may provide a reasonable estimate within 30 days if repairs are not yet finished. However, they must follow up with final paid receipts or copies within 30 days from the date the estimated-cost statement was furnished.
What happens if the landlord misses the 30-day deadline?
Under 765 ILCS 710/1(a), if a landlord fails to furnish the required itemized damage statement and paid receipts within 30 days, the landlord must return the security deposit in full within 45 days of vacating.
What happens if the landlord misses the 45-day deadline or acts in bad faith?
Under 765 ILCS 710/1(c), upon a finding by a circuit court that the landlord refused to supply the required statement or acted in bad faith, and failed to return the deposit due within statutory limits, the landlord is liable for twice the amount of the security deposit due, plus court costs and reasonable attorney fees.
Why should I provide a forwarding address?
Under 765 ILCS 710/1(a), providing a written forwarding address or verified email ensures you receive your statement and refund, and preserves your ability to enforce statutory remedies.
Primary Sources
- 765 ILCS 710
Statutory framework governing security deposits in Illinois.
Related State Guides
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