What is the maximum late fee in Illinois?

The maximum late fee in Illinois is $75.00 based on a rent of $1,500.00. 5-day grace period. Fee must be 'reasonable.'

Does Illinois require a grace period for late fees?

Yes, Illinois requires a 5-day grace period by law. No late fee can be charged during this period.

Free Tool

Calculate the maximum late fee you can legally charge in Illinois. Check grace periods, fee caps, and compliance with Illinois state law.

State

Monthly Rent

Days Late

Your Proposed Fee

Your Late Fee

$75.00

Compliant

Your proposed fee of $75.00 is within the $75.00 maximum for Illinois.

Rent + Fee

$1,575.00

Grace Period

5 days (required)

Maximum Fee in Illinois

$75.00

Grace period: 5 days (required)

Fee cap: $75.00 (5%)

Daily fees: Not typical

5-day grace period. Fee must be 'reasonable.'

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Illinois requires a 5-day grace period before any late fee can be charged. The maximum late fee is capped at 5% of rent.

Use the calculator above to check if your proposed late fee complies with Illinois law. Need more tools? Try our prorated rent calculator or rent estimate tool.

For a complete guide to Illinois landlord-tenant law, read our Illinois Landlord-Tenant Law 2026 guide.