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Illinois Late Fee Laws

Last reviewed: July 10, 2026

Maximum late fee
No statutory cap
Grace period
None required
Statute
765 ILCS (landlord-tenant statutes)

Illinois sets no statutory dollar cap on residential late fees — 765 ILCS (landlord-tenant statutes) governs the landlord–tenant relationship, and courts still expect a late fee to be a reasonable estimate of actual damages rather than a penalty.

Illinois's statute doesn't impose a waiting period, so the lease controls when a late fee may be charged. Charging from day one is legal here only if the lease says so explicitly.

Illinois has no statewide cap, but Chicago's RLTO limits late fees to $10 per month plus 5% of the amount of monthly rent above $500 — and other home-rule cities have their own rules. Always check the municipal ordinance before setting a fee in Illinois.

Calculate a late fee with Illinois's limits preloaded

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Frequently asked questions

What is the maximum late fee in Illinois?
There is no fixed statutory maximum in Illinois. The fee still has to be reasonable — courts can strike down fees that operate as penalties, so document how yours relates to your actual costs.
Is there a required grace period in Illinois?
No. Illinois's statute doesn't mandate a grace period, so the lease determines when a fee kicks in.
Where is this in Illinois law?
The controlling provision is 765 ILCS (landlord-tenant statutes). Legislatures amend these rules, so always confirm the current text via the official source linked above.

This tool is for informational purposes only and is not legal advice. Rules vary by state and locality and change over time — confirm current requirements for your jurisdiction before acting.

Late fee laws in other states