Chicago RLTO Security Deposits: Receipts, Interest, Deductions, and the 45-Day Rule

Chicago is not ordinary Illinois.

Chicago residential rentals may be governed by the Chicago Residential Landlord and Tenant Ordinance, commonly called the RLTO. That local ordinance adds requirements that can matter as much as the statewide rule. A landlord who treats a Chicago unit like a generic Illinois rental can create avoidable exposure.

Security deposits demand strict bookkeeping.

The safer practice is to issue a written receipt, preserve deposit records, calendar move-out deadlines, photograph condition at move-in and move-out, and keep receipts for deductions. If a deduction is made, it should be supported by real evidence, not a vague statement that the unit was left dirty or damaged.

Interest and timing should not be guessed.

Chicago has rules concerning security deposit interest and timing of return. Landlords should verify the current interest rate and the applicable deadline before acting. Tenants should keep deposit proof, forwarding address communications, and photographs of condition.

The 30/45-day rhythm matters.

A common compliance framework in Chicago deposit disputes involves itemization timing and return timing. The practical lesson is simple: do not wait. Calendar the move-out date immediately and build the deposit file the same week possession is returned.

A deposit dispute can become bigger than the deposit.

When an ordinance provides remedies for noncompliance, a small deposit can turn into a larger legal problem. That is why discipline is cheaper than cleanup.