Senior Freeze Exemption Errors
Some Senior Freeze Exemption calculations were performed incorrectly. Click here to see if your PIN was affected.
If you did not receive your Senior Freeze Exemption on your tax bill, click here for information on how to correct this problem.

Questions about your tax bill?

See our FAQ for the Second Installment Tax Bills you are receiving

  • To read the FAQ, click here.
  • To view a pdf of the FAQ, click PDF here.

New Rules For Appeals

The Cook County Assessor's Office has released new rules for lawyers, tax representatives and practitioners doing business with the Office in March of 2019. you can read a copy of the rules here.

June 27, 2019 Update: The Office has created new forms to assist lawyers, tax representatives, and practitioners filing appeals so that doing business with us is not only fair, ethical, and transparent, but also efficient. Read Assessor Kaegi's letter about how to use the new PDFAppeal Data Form A and PDFAppeal Data Form B together.

External Audit Report of CCAO

IAAO Logo As part of his reform plan for the office, Assessor Kaegi asked the International Association of Assessing Officers to conduct a comprehensive audit of the Cook County Assessor's Office (CCAO) operations. The IAAO is a global community of mass appraisal expects who promote excellence in appraisal, assessment administration, and property tax policy. The audit's goal was to identify opportunities to improve office operations, especially in the area of valuations and data modernization, and determine the resources needed to support Assessor Kaegi's vision of an office driven by a commitment to equity, fairness, and transparency.

The IAAO identified four areas of operation that needed improvement in the CCAO: staffing and skill development, adapting technology, data quality, and valuation methods. Many of the operational changes recommended in the report have been areas of focus in the first 100 days of Assessor Kaegi's administration.

A copy of the audit report can be found PDFhere.

Cook County Assessor Fritz Kaegi releases the office's 100 Day Plan Report

To read the report on Medium, click here.

View the complete list of 100 Day Objectives and Initiatives PDF here.


First Assessments of North Suburbs Released

In a commitment to fairness and transparency, Assessor Fritz Kaegi promised to release detailed reports on how the Assessor's Office creates its assessments.

As part of the triennial assessment process, the Northern Suburbs will be re-assessed this year, the South Suburbs next year and Chicago proper in 2021.

Assessor Kaegi has released his first reports, starting with the Norwood Park, Evanston and New Trier townships.

Historical data comparisons can be found here. Additional reports will be released for each re-assessed township and a full accounting of the North Suburban re-assessment process will be released this fall.

The tentative schedule for assessment mailings and appeals for 2019 can be found here.

Important Notices

Tax Bills and Payments

The Cook County Treasurers Office mails out tax bills and collects payments.
For a copy of your bill and/or payment information, please contact the Cook County Treasurers Office at 312-443-5100,
or visit their Web site at

Report Erroneous Exemptions

When a property is getting an erroneous exemption you are paying more than your fair share. You can anonymously report erroneous exemptions at whistleblowing .


Click here if you have a question, would like to send us an email or to receive emails regarding mailing dates, deadlines and assessment information.