Tuesday, December 4, 2018: Early Payments Accepted for Tax Year 2018 First Installment

• Some taxpayers may choose to pay their Cook County property taxes before they are due.

Friday, March 1, 2019: Tax Year 2018 First Installment Due Date

• In Cook County, the due date for the First Installment property taxes is always the first business day in March.
• According to Illinois law, the First Installment taxes are 55% of the prior year's total tax (or 55% of the adjusted tax if an assessment certificate of error is certified by the previous November 30).

Friday, March 1, 2019: Senior Citizen Tax Deferral Deadline

• Program administered by the Cook County Treasurer's Office and the Illinois Department of Revenue. It allows qualifying seniors to defer part or all of the property taxes until ownership of the property is transferred.

Friday, May 3, 2019: 2017 Annual Delinquent Tax Sale Starts

• If property taxes for the immediately preceding tax year are delinquent on a parcel, they are offered for sale to purchasers at the Annual Tax Sale.