Illinois Lease Agreement Template
Reviewed by the Agiled editorial teamUpdated June 2026
The lease template below works in Illinois once you fill in the state-specific numbers — and those numbers are what this page covers: the deposit cap, how fast the deposit must come back, how much notice the landlord owes before entering, and what it takes to end a month-to-month tenancy. The download is the same attorney-style boilerplate as our standard lease; Illinois law fills in the blanks.
Illinois lease rules at a glance
| Security deposit cap | No statewide cap (Chicago's RLTO adds stricter local rules) |
|---|---|
| Deposit return deadline | 45 days; itemized deduction statement within 30 days (landlords with 5+ units) |
| Landlord entry notice | No statewide statute; Chicago requires 48 hours |
| Month-to-month termination notice | 30 days' written notice |
| Late fees | Capped at $20 or 20% of rent (whichever is greater) under 2021 law |
State laws change frequently and this summary is not legal advice. Verify current rules against the state statute or with a licensed attorney before relying on them.
How Illinois handles lease agreements
Illinois lease law is really two regimes: a permissive statewide baseline and Chicago's RLTO, which adds deposit interest, strict receipts, and 48-hour entry notice. Confirm which one your property falls under. In Illinois, the security deposit rule is: no statewide cap (Chicago's RLTO adds stricter local rules). After move-out, the landlord's deadline to return the deposit is 45 days; itemized deduction statement within 30 days (landlords with 5+ units), and ending a month-to-month tenancy takes 30 days' written notice. Confirm current figures against the state statute before signing — legislatures amend landlord-tenant law frequently.
Illinois lease agreement FAQs
How much can a landlord charge for a security deposit in Illinois?
No statewide cap (Chicago's RLTO adds stricter local rules). Put the exact deposit amount in the lease, along with where it is held, and check the current statute — several states have recently lowered their caps.
How long does a landlord have to return a security deposit in Illinois?
45 days; itemized deduction statement within 30 days (landlords with 5+ units). The return should include an itemized statement for any deductions; missing the statutory deadline can expose the landlord to penalty damages in many states.
How much notice does a landlord need to enter a rental in Illinois?
No statewide statute; Chicago requires 48 hours. Even where no statute sets a number, writing a notice period into the lease (24–48 hours is the national norm) protects both sides.
How much notice is required to end a month-to-month tenancy in Illinois?
30 days' written notice. Give notice in writing and keep proof of delivery — the notice period is one of the most commonly litigated lease terms.
The full lease agreement guide
Clause-by-clause guidance, common mistakes, and the complete template text live on the main page: Lease Agreement Template — full guide and download.