Illinois Late Rent Laws for Landlords
Illinois has no statewide late fee cap or grace period, but Chicago does, and much of the state's rental housing is in the Chicago area. Know which rules apply to your unit before you set a late fee.
Illinois at a glance
| Topic | Illinois rule |
|---|---|
| Late fee limit | No statewide cap. Fees should be in the lease and reasonable. In Chicago, the Residential Landlord and Tenant Ordinance limits late fees to $10 per month for the first $500 of rent plus 5% of any rent over $500. |
| Grace period | None required by state law. |
| Notice for unpaid rent | 5-day written notice demanding rent before filing for eviction (735 ILCS 5/9-209). |
| Security deposit | No statewide cap. For buildings with 5 or more units, return within 45 days, or provide an itemized statement of deductions within 30 days (765 ILCS 710). Chicago adds its own deposit, receipt and interest rules. |
| Rent increases | Local rent control is preempted statewide. There's no statutory notice for increases, but a month-to-month tenancy needs 30 days' written notice to end (735 ILCS 5/9-207). Give at least 30 days before an increase. |
Late fees in Illinois
No statewide cap. Fees should be in the lease and reasonable. In Chicago, the Residential Landlord and Tenant Ordinance limits late fees to $10 per month for the first $500 of rent plus 5% of any rent over $500.
Whatever the state allows, a late fee is only enforceable if it's written into your lease: the amount, when it applies, and whether it's a one-time or daily fee. If the lease is silent, you generally can't charge one. Use our late fee calculator to check a fee against Illinois's rules before you put it in a lease.
Grace period
None required by state law.
Even when the law doesn't require one, a short grace period of 3–5 days is common. It gives tenants room for weekends and bank delays and makes your late fee easier to defend. Learn more in our rent grace period guide.
Notice for unpaid rent
5-day written notice demanding rent before filing for eviction (735 ILCS 5/9-209).
Serve notices exactly the way the statute describes: the right number of days, the right delivery method, and only the amounts the notice is allowed to demand. A defective notice usually means starting the clock over. Our pay or quit notice template shows what a notice typically includes.
Security deposits
No statewide cap. For buildings with 5 or more units, return within 45 days, or provide an itemized statement of deductions within 30 days (765 ILCS 710). Chicago adds its own deposit, receipt and interest rules.
Rent increases
Local rent control is preempted statewide. There's no statutory notice for increases, but a month-to-month tenancy needs 30 days' written notice to end (735 ILCS 5/9-207). Give at least 30 days before an increase.
Use the rent increase calculator to work out the new amount and the earliest date it can take effect.
Local rules
Chicago's RLTO and Cook County's Residential Tenant Landlord Ordinance (RTLO) add late fee limits, deposit rules and disclosure requirements. Evanston and some other suburbs have their own ordinances.
A typical late rent timeline in Illinois
| Stage | What happens |
|---|---|
| Due date | Rent due (e.g. the 1st). A reminder 3–7 days before is the best way to avoid the rest of this table. |
| Earliest late fee | Whatever your lease says. Illinois doesn't require a grace period. |
| Formal notice | 5-day written notice demanding rent before filing for eviction. |
Most late rent never needs to reach the formal notice stage. Tenants who get a clear reminder a few days before rent is due, and another on the due date, pay on time far more often. That's exactly what automated reminders are for.
Frequently asked questions
How much can a landlord charge for late rent in Illinois?+
No statewide cap. Fees should be in the lease and reasonable. In Chicago, the Residential Landlord and Tenant Ordinance limits late fees to $10 per month for the first $500 of rent plus 5% of any rent over $500.
Is there a grace period for rent in Illinois?+
None required by state law.
How much notice does a Illinois landlord have to give for unpaid rent?+
5-day written notice demanding rent before filing for eviction (735 ILCS 5/9-209).
How long does a Illinois landlord have to return a security deposit?+
No statewide cap. For buildings with 5 or more units, return within 45 days, or provide an itemized statement of deductions within 30 days (765 ILCS 710). Chicago adds its own deposit, receipt and interest rules.
How much can a landlord charge for late rent in Chicago?+
Under the Chicago RLTO: $10 per month for the first $500 of monthly rent, plus 5% of any amount over $500. For a $1,500 apartment that's $10 + $50 = $60 maximum per month.
Related resources
Stay ahead of Illinois's late rent rules
Ping sends reminders before rent is due and follows up automatically after the due date, so fewer tenants ever reach the notice stage. Free while we're in early access.