Grace period, late fee cap, and pay-or-quit notice rules — 735 ILCS 5/9-209 (Chicago: RLTO § 5-12-140)
Under 735 ILCS 5/9-209 (Chicago: RLTO § 5-12-140), Illinois gives tenants a 5-day grace period after rent is due. During this window, a landlord may not charge a late fee or serve a pay-or-quit notice. The grace period begins on the rent due date stated in the lease. Only after the grace period expires may the landlord impose a late charge and begin the eviction notice process.
Illinois courts have recognized a customary 5-day grace period before a valid 5-day pay-or-quit notice can be served, though not codified statewide. Chicago RLTO caps late fees at 5% of past-due rent per month.
Illinois does not set a statewide cap on late fees. The amount must be stated in the lease and should represent a reasonable estimate of the landlord's actual damages from late payment. Courts have struck fee clauses that appear punitive. A late fee of 5-10% of monthly rent is generally considered defensible; higher amounts risk invalidation.
Once rent is late and the 5-day grace period has expired, the landlord must serve a formal 5-day pay-or-quit notice (735 ILCS 5/9-209) before filing for eviction. This notice must state the total amount owed and give the tenant the option to either pay in full or vacate. If the tenant does neither, the landlord may file an unlawful detainer action in Illinois court.
Yes — Illinois provides a 5-day grace period under 735 ILCS 5/9-209 (Chicago: RLTO § 5-12-140). Landlords cannot charge a late fee or serve a pay-or-quit notice until after the 5-day grace window expires.
Illinois does not set a statutory cap on late fees. The amount must be stated in the lease and be reasonable. Courts may strike fees that appear punitive rather than compensatory for actual losses.
Landlords in Illinois must serve a 5-day pay-or-quit notice under 735 ILCS 5/9-209 before filing an eviction lawsuit for nonpayment of rent. Note: the 5-day notice period does not begin until after the 5-day grace period expires. The tenant has 5 days after service of the notice to pay all rent owed or vacate.
Technically yes — one missed rent payment is grounds for eviction in Illinois. However, landlords must first wait out the 5-day grace period, then serve a 5-day pay-or-quit notice and wait for it to expire before filing. Most landlords prefer to work with tenants before filing, as eviction court costs and lost vacancy time often exceed one month's rent.
Data sourced from Illinois published statutes (735 ILCS 5/9-209), U.S. Census Bureau American Community Survey 2023 5-Year Estimates. Last updated April 29, 2026. This page is for informational purposes only and does not constitute legal advice. Consult a licensed attorney for your specific situation.
