Illinois landlord guide
Deposit limits, entry notice, termination notice and rent increase rules for Illinois, with the sources they come from.
Illinois landlord-tenant rules at a glance
- Security deposit limit
- No statutory limit; local caps apply (Cook Co. 1.5 months)
- Deposit return / claim rule
- 45 days
- Deposit interest
- Interest only for 25+ unit buildings; 45-day return: 5+ units
- Notice before entry
- No statewide requirement; local ordinances may apply
- Ending a month-to-month
- 30 days written notice (735 ILCS 5/9-207)
- Notice before a rent increase
- None statewide; 30 days via termination rule; local rules vary
- Late fees
- No statewide limit; local ordinances may cap
- Rent control
- Prohibited: Rent Control Preemption Act (50 ILCS 825)
General information from the Security Deposit Return/Interest Acts (765 ILCS 710, 715), last reviewed 2026-08-21. Not legal advice; municipal bylaws can add requirements.
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