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How much notice does a landlord have to give for unpaid rent in Illinois?
Short answer
5-day written demand for unpaid rent before eviction
Notice: After rent is due: written demand giving at least 5 days after service to pay
After rent is late, you may serve a written demand giving at least 5 days to pay before the lease is terminated. The notice must contain the statutory 'Only FULL PAYMENT' language to keep it valid after partial payments.
"demand payment thereof and notify the tenant, in writing, that unless payment is made within a time mentioned in such notice, not less than 5 days after service thereof, the lease will be terminated." ilga.gov
""Only FULL PAYMENT of the rent demanded in this notice will waive the landlord's right to terminate the lease under this notice," ilga.gov
5-day written demand for unpaid rent before eviction Verified
Deadline: After rent is due: written demand giving at least 5 days after service to pay
After rent is late, you may serve a written demand giving at least 5 days to pay before the lease is terminated. The notice must contain the statutory 'Only FULL PAYMENT' language to keep it valid after partial payments.
"demand payment thereof and notify the tenant, in writing, that unless payment is made within a time mentioned in such notice, not less than 5 days after service thereof, the lease will be terminated." ilga.gov
""Only FULL PAYMENT of the rent demanded in this notice will waive the landlord's right to terminate the lease under this notice," ilga.gov
Notes: 735 ILCS 5/9-209.
Last verified 2026-10-20 · Confidence: high · Status: verified · Report a correction