Illinois Month to Month Lease

Illinois Month to Month Lease — Notice Rules and Your Rights (2026)

By Oleg Kachko · Updated September 29, 2026

✓ Law Verified September 2026

Illinois month to month lease rules answer the question every renter without a current lease eventually asks: how much notice do I have to give, how much does the landlord have to give me, and can they raise the rent or end it whenever they like? This guide gives the Illinois answers in plain English, verified against official Illinois sources as of September 2026.

Illinois Month to Month Lease Rules at a Glance

Notice YOU must give to leave 30 days written notice under 735 ILCS 5/9-207. The tenancy ends on the last day of a monthly rental period, so many tenants give notice at least 30 days before the end of the month. Chicago and Cook County do not add a longer tenant notice period.
Notice the LANDLORD must give Under state law (735 ILCS 5/9-207) the landlord must give 30 days written notice ending on the last day of a rental period. In Chicago (RLTO 5-12-130(j)) and suburban Cook County (RTLO) the notice grows with how long you have lived there: 30 days if under 6 months, 60 days from 6 months to 3 years, and 120 days if more than 3 years. In Chicago, if the landlord gives too little notice, you may be able to stay for up to 60 days (120 days for tenancies over 3 years) from the date proper written notice is actually given, on the same terms.
Notice before a rent increase No separate statewide statute sets a rent increase notice period. In practice the landlord must end the tenancy or change terms with the 30 day notice under 735 ILCS 5/9-207. In Chicago and suburban Cook County the notice is 30 days if you have lived there under 6 months, 60 days from 6 months to 3 years, and 120 days if more than 3 years. Illinois has no statewide rent control.
Reason required to end the tenancy No, either side may end it with proper notice

How a Month to Month Tenancy Starts in Illinois

In Illinois a month-to-month tenancy can start in three ways: an oral rental agreement with rent paid monthly, a written lease that says it is month-to-month, or a tenant who stays after a fixed-term lease ends while the landlord keeps accepting monthly rent. Notice to end it is governed by 735 ILCS 5/9-207.

When a fixed lease ends and you stay: If a fixed-term lease ends and you stay and pay rent that the landlord accepts, many Illinois tenants become month-to-month tenants by operation of law, ended with 30 days notice under 735 ILCS 5/9-207. Illinois common law can treat a holdover after a lease of 1 year or longer as a year-to-year tenancy, which needs 60 days notice under 735 ILCS 5/9-205. The result depends on the lease wording and court precedent.

If you stay without the landlord’s consent, the landlord may be able to seek double rent for a willful holdover under 735 ILCS 5/9-202.

Most renters land on an Illinois month to month lease without ever signing one: the year lease ends, nobody calls, rent keeps getting paid and accepted. From that point the notice rules on this page control, not the expired lease’s term, though its other clauses usually carry over.

Ending An Illinois Month to Month Lease: The Notice Rules

If you want to leave: 30 days written notice under 735 ILCS 5/9-207. The tenancy ends on the last day of a monthly rental period, so many tenants give notice at least 30 days before the end of the month. Chicago and Cook County do not add a longer tenant notice period.

If the landlord wants you out: Under state law (735 ILCS 5/9-207) the landlord must give 30 days written notice ending on the last day of a rental period. In Chicago (RLTO 5-12-130(j)) and suburban Cook County (RTLO) the notice grows with how long you have lived there: 30 days if under 6 months, 60 days from 6 months to 3 years, and 120 days if more than 3 years.

In Chicago, if the landlord gives too little notice, you may be able to stay for up to 60 days (120 days for tenancies over 3 years) from the date proper written notice is actually given, on the same terms.

How the notice has to be given: The notice must be in writing. Under 735 ILCS 5/9-211 it can be served by handing it to the tenant, leaving it with a person age 13 or older who lives on the premises, or sending it by certified or registered mail with a return receipt. It must end the tenancy on the last day of a monthly rental period.

A notice that expires mid-period may not be valid, so check with your court or a legal aid office.

The mistake that costs renters a month of rent is timing. Under the Illinois month to month lease rules, notice that arrives after the rent due date usually does not take effect until the end of the following rental period. Give notice in writing, keep proof of the date it was delivered, and count the days from that date.

Rent Increases on a Month to Month Tenancy

Required notice: No separate statewide statute sets a rent increase notice period. In practice the landlord must end the tenancy or change terms with the 30 day notice under 735 ILCS 5/9-207. In Chicago and suburban Cook County the notice is 30 days if you have lived there under 6 months, 60 days from 6 months to 3 years, and 120 days if more than 3 years. Illinois has no statewide rent control.

A rent increase on an Illinois month to month lease is really a notice ending the old terms and offering new ones, which is why Illinois ties it to the same notice clock. An increase served with short notice is not owed until the proper period has run, and paying the old amount on time while you say so in writing keeps you current.

Does the Landlord Need a Reason?

In Illinois, no. Either side can end an Illinois month to month lease for any lawful reason with proper notice. The exceptions are the reasons that are always illegal: retaliation for a complaint, and discrimination against a protected class.

Even where no reason is required, the eviction process is. A landlord who ends an Illinois month to month lease and then changes the locks, shuts off utilities, or removes belongings has skipped the court, and that is illegal in every state.

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The Rights You Keep on a Month to Month Lease

Month-to-month tenants keep their full protections. These include the Security Deposit Return Act (765 ILCS 710) for buildings with 5 or more units, the implied warranty of habitability, the Retaliatory Eviction Act (765 ILCS 720), and Chicago RLTO or Cook County RTLO rights where they apply.

The landlord still has to get a court judgment under the Eviction Act (735 ILCS 5/9-101 and following) and only the sheriff can carry it out. Lockouts and utility shutoffs are illegal.

Nothing about the Illinois month to month lease weakens the deposit rules, the landlord’s duty to make repairs, the ban on retaliation, or the requirement to go through court before any eviction. The only thing that changes is how long each side has to say goodbye.

Leaving Cleanly: A Renter’s Checklist

Give the notice in writing with a specific move-out date, timed so it lands before the rent due date. Keep paying rent through the notice period; a landlord can accept rent and still hold you to the notice, and skipping the last month is the fastest way to lose a deposit.

Photograph the unit on the way out, return every key, and put your forwarding address in writing so the deposit deadline starts running. On an Illinois month to month lease the last month is where most deposit disputes are born, and a dated paper trail ends nearly all of them.

If You Want to Stay: Turning Flexibility Into Security

Month-to-month is convenient until you need certainty. If you want to stay put, ask for a fixed-term lease in writing; a landlord who is happy with you usually says yes, and a signed term takes the short-notice risk off the table for both sides.

If the answer is no, keep your position strong the ordinary way: rent on time, repair requests in writing, and a copy of every notice. The Illinois month to month lease gives the landlord a short clock, but it never gives them permission to skip the law.

Recent changes in Illinois: Starting January 1, 2026, HB 3566 bars landlords from naming minors as defendants in eviction cases. Starting July 1, 2026, HB 3564 requires all mandatory fees to appear on page 1 of the lease and bans lease renewal and pre-judgment eviction notice fees. Chicago and suburban Cook County require 60 or 120 days notice to end a tenancy or raise rent for longer-term tenants.

Illinois Month to Month Lease: Quick Answers

How much notice do I have to give to move out? 30 days written notice under 735 ILCS 5/9-207. The tenancy ends on the last day of a monthly rental period, so many tenants give notice at least 30 days before the end of the month. Chicago and Cook County do not add a longer tenant notice period.

Can the landlord end it for no reason? Yes, with proper notice, but never for a retaliatory or discriminatory reason, and never without the court process.

Does my old lease still apply? Usually its terms carry over to the Illinois month to month lease except the length; the notice rules on this page replace the fixed term.

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Official Illinois Sources & Resources

Making Your Illinois Month to Month Lease Work for You

Flexibility is the whole point of the Illinois month to month lease, and it cuts both ways: you can leave with short notice, and so can the landlord. Calendar the notice period the day you move to month-to-month, and give your own notice in writing, dated, and timed to the rent due date so it counts.

Every other tenant right still applies on the Illinois month to month lease, the deposit rules, the repair duty, the ban on retaliation, and the court process before any eviction. A landlord who treats the Illinois month to month lease as permission to skip those steps is breaking the law, not exercising a right.

This guide to the illinois month to month lease was last verified against official sources in September 2026. Notice periods and just-cause rules have changed in several states since 2024, re-check before relying on a deadline.

More Illinois Tenant Rights Guides

Disclaimer: This guide is informational only and is not legal advice. Landlord-tenant laws change and vary by city and county within a state. Verify current rules with your state, your local court, or a free legal-aid office before acting. If you are facing eviction, contact a local tenant attorney or legal-aid organization right away.

Renting? Protect your belongings — compare renters insurance at Home Insure Guide. Divorce involving a lease? See Divorce Help Guide. Unsafe housing / toxic mold injury? Some cases qualify — see Mass Tort Info.