Free tool for Chicago landlords
When do you have to send your rent increase notice?
Chicago doesn't cap rent, but it does set how early you have to tell your tenant: 30, 60 or 120 days, depending on how long they've lived there. Enter two dates and get your deadline.
Enter both dates to see your deadline.
How the calculator works
- Tenant there less than 6 months: at least 30 days' written notice.
- 6 months to 3 years: at least 60 days.
- More than 3 years: at least 120 days.
The same notice applies to raising the rent, not renewing a lease, and ending a month-to-month tenancy. It covers every rental in Chicago, including owner-occupied two-flats. The clock runs from the day your tenant receives the notice, so the calculator works backward from the date the change starts and adds a few days of cushion for delivery. When a tenancy is right at the 6-month or 3-year mark, it uses the longer period.
Full rules, retaliation limits and how to deliver the notice: Chicago rent increase rules for landlords.
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This calculator is general information, not legal advice. It doesn't account for leases with their own notice terms, subsidized housing rules or tenants in the eviction process. Rules change; check the current ordinance or talk to a local attorney. Source: City of Chicago Department of Housing, Residential Landlord and Tenant Ordinance summary (Fair Notice Ordinance). Checked October 9, 2026.