Late Payment Penalty

  • According to the Illinois Compiled Statutes, 35 ILCS 200/15, the Lake County Collector is bound by state law to collect 1.5% penalty per month on any unpaid installment balance after the due dates. 
  • For this year, due dates are June 5th and September 5th, therefore the penalty is calculated on the 6th of each month and is not prorated by state law.
  • Forgiveness of the penalty must be due to a Lake County error and must be documented.
  • PLEASE NOTE: Not receiving a tax bill, medical emergencies, travel or payment history do not qualify for exemption. 
Payment Date
1st Installment
2nd Installment
By June 5
0% 0%
June 6 - July 5
1.5% 0%
July 6 - August 5
3.0% 0%
August 6 - September 5
4.5% 0%
September 6 - October 5
6.0% 1.5%
October 6 - November 12
7.5% 3.0%
  • As of November 12, 2023, the following forms of payment will be accepted in person only: cash, cashier's check, certified check, money order, and credit card (please call our office for details).
  • To avoid tax sale, payments must be received in the Treasurer’s Office by 5 p.m. (no postmark) on Friday, November 12, 2023.