Illinois security deposits in 2027
Earlier drafts of HB 3564 would have capped deposits at one month of rent. The enacted law does not. It does require a required deposit to be disclosed on page one of the lease.
Updated November 1, 2026 · Based on Public Act 104-0479
What changes in 2027
- No new statewide cap on the amount.
- The deposit, as an amount the tenant must pay, goes on page one of the lease and in the listing or its weblink.
- Say whether it is refundable, and what part, if any, is a non-refundable fee.
Rules that already applied
| Law | Main rule |
|---|---|
| Security Deposit Return Act (765 ILCS 710) | An itemized statement of deductions within 30 days after the tenant moves out, otherwise the full deposit back within 45 days. Check whether your building is covered. |
| Security Deposit Interest Act (765 ILCS 715) | Buildings with 25 or more units pay interest on deposits held more than six months. |
| Chicago RLTO | Receipt, separate account, interest and strict return rules. |
| Cook County RTLO | Deposits capped at 1.5 months of rent in suburban Cook County. |
Make your disclosure in about two minutes. Put the deposit, any move-in fee and the rent on one page so renters see the real cash needed to move in.
Frequently asked questions
Does HB 3564 cap security deposits?
No. Earlier drafts proposed a one-month cap, but the enacted law only requires disclosure on page one of the lease and in the listing.
How much can a landlord charge for a deposit in Cook County?
Suburban Cook County's RTLO caps deposits at 1.5 months of rent.
When must an Illinois deposit be returned?
Under the Security Deposit Return Act, an itemized statement of deductions is due within 30 days of move-out, or the full deposit within 45 days.
Related
Sources: Illinois General Assembly: Public Act 104-0479 (HB 3564) · Illinois Security Deposit Return Act (765 ILCS 710) · Illinois Security Deposit Interest Act (765 ILCS 715) · City of Chicago: Residential Landlord and Tenant Ordinance (RLTO) · Cook County Residential Tenant Landlord Ordinance (RTLO)
Not legal advice. Confirm your lease with an Illinois attorney.
Not legal advice. Confirm your lease with an Illinois attorney.