Assessor's Office


First installment property tax bills for tax year 2022 have been mailed.

Property taxes are paid in two installments. The first installment is fifty-five percent (55%) of a property's total tax bill for the previous year, and will be due on April 3, 2023. NO exemptions or adjustments appear on the first bills, nor do they reflect the results of any successful assessment appeals filed for tax year 2022.  Exemptions and successful appeal adjustments ALWAYS appear on second installment bills. Second installment bills will probably be late again this year, although hopefully not as late as they were in 2022.

 Illinois law states that first installment bills should be mailed in late January and should carry a March 1 due date. But second installment bills last year were not due until December 30. The Cook County Township Assessor’s Association therefore introduced legislation in Springfield requesting a one-time extension for first installment payments. The state legislators agreed that having another tax bill due March 1 could cause hardship for some taxpayers and extended the due date to April 3 for this year only.  

 Details about Paying Taxes. Property owners who do not have mortgage companies paying their taxes can pay property taxes in person, by mail, or online at the Cook County Treasurer’s web site, Those wishing to pay in person can do so at the Cook County Treasurer’s downtown office at 118 N. Clark Street or any Chase Bank office. If you choose to pay by US mail, we recommend that you do by Certified Mail-Return Receipt Requested so you have proof of timely posting. Mailed payments must be postmarked no later than April 3.

 If money for property taxes is paid into an escrow account with a taxpayer’s mortgage company, the financial institution should receive the tax bill electronically, even if the taxpayer also receives a hard copy. We advise taxpayers with such property tax escrows NOT to pay property taxes themselves; doing so could result in double payments. We recommend you check the Cook County Treasurer's website to verify payments.

 Release date:   March 2, 2023


What We Do

In a Nutshell: Your New Trier Township Assessor's Office advocates for you with the Cook County Assessor's Office and the Cook County Board of Review. Additionally, we provide a broad range of services acting as a liaison for you with various County agencies.

Available Services

  • Assistance with preparing appeals for the Cook County Assessor, the Assessor's Re-Review and the Cook County Board of Review (and Re-Review)
    • We provide information about the various grounds for appeal
    • We file appeals for you at your request
  • Assistance with preparing appeals for the Property Tax Appeal Board (PTAB)
  • Assistance with filing exemptions
  • Assistance with the Cook County Treasurer's Office
    • Obtaining refunds where applicable
    • Updating name and address information
    • Providing documentation to correct second installment tax bills that are missing valid exemptions
  • Sales and building permit information
  • Taxpayer of record information
  • Brief legal descriptions of a specific property
  • Information from the Plat Books ("Sidwell Maps")
  • Information from tax exempt properties
  • Tax rate information

Outreach Events

We are also available to do outreach events for your organization. We have a presentation we call "Your Annual Tax Calendar at a Glance," but will gladly tailor a presentation for your organization.

Cook County

Understanding Property Taxes

Who's who in the Cook County property tax system? Learn the ins and outs of the taxation process (PDF).


In Cook County, property taxes involve coordination between offices at the county, state, and local municipal level. Learn more here.

Contact Us

You can reach the New Trier Assessor's office at 847-446-8200. Deputy Assessor Leonard Shifflett and I look forward to serving you.

Jan Churchwell, New Trier Township Assessor

 Jan Churchwell at

Len Shifflett at