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MARIA PAPPAS
COOK COUNTY TREASURER
MARIA PAPPAS
COOK COUNTY TREASURER
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Michael Puccinelli
Director of Media & Public Relations • Communications
312.603.3211
mpuccinelli@cookcountytreasurer.com
Erika Maldonado
Hispanic Liaison
312.603.5057
emaldonado@cookcountytreasurer.com
Office of Cook County Treasurer Maria Pappas
118 North Clark Street, Room 212
Chicago, Illinois 60602
312.603.6202
news@cookcountytreasurer.com
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    • Payment Plan Calculator
    • Check Your Payment Status or Make an Online Payment
    • Pay by Mail or in Person
    • Pay At Chase Bank
    • Pay At Your Local Community Bank
    • Get a Copy of Your Tax Bill
    • Returned Checks
    • Information about Prior Year Property Taxes
    • If Taxes Were Sold
    • Single or Multiple Payments Via ACH
    • Multiple Payments Via Wire Transfer
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How Technology Changed the Cook County Treasurers Office
Cook County Treasurer's Office - 6/27/2025

When I became Cook County Treasurer in 1998, I walked into an office stuck in the past. Boxes containing $30,000,000 of uncashed checks lined the floor, collecting dust rather than earning interest. Just four working computers and six typewriters served a staff of hundreds

It was a wake-up call. But I knew I was where I was meant to be. You see, I’ve always believed in shaking things up—so that’s what I set out to do.

My first interest was the “lack of interest” those boxes of checks were earning for the county. I immediately implemented a lockbox system to quickly deposit checks. That nearly tripled interest earnings in my first year.

Next, we replaced paper-only processes with a computerized network to handle collections, refunds, deposits, distributions, and more. Automating made deposits instantaneous so interest could accrue in real-time.

Those innovations helped boost the bottom line even further allowing me to phase out 5 satellite offices and ultimately reduce the payroll from 250 to about 60.

We didn’t stop there. We set up our website cookcountytreasurer.com which now serves as a 24/7 portal to office services. Last year alone, the site was visited more than 6.5 million times and since opening it’s been visited more than 100 million times. It’s where taxpayers can search for unclaimed refunds and check for missing exemptions in over 200 languages, helping ensure equity and inclusion in every neighborhood and town.

In 2002, Cook became one of the first counties in the country to offer online property tax payments. We created a system for direct bank transfers that was secure and easy to use. Today, more than 850,000 taxpayers pay online each year. If you pay from your bank account, it’s free.

In the 2010’s we began to allow payments on smart phones and other mobile devices. Since 2017, there have been more than 12 million website visits from mobile users.

Also, in 2017 we began offering taxpayers the option to download their bills. More than 7 million tax bills have been electronically downloaded since that functionality was introduced.

In 2018 we began offering automatic refunds for overpayments. Since then, we’ve issued 175,000 refunds totaling more than $150 million. And we’re holding more of your money. Currently, $122 million in overpayments and more than 33 million in exemption refunds are available from the Treasurer’s Office. Log on today to see if you’re owed money.

I’ve always believed good government works for the people. That’s why, for more than 25 years, I’ve made it my mission to simplify the tax system, embrace innovation, and give taxpayers user-friendly tools.

We collect over $18 billion in property taxes each year to fund schools, emergency services, and more than 2000 local government units. Those taxes, paid by the owners of nearly 1.8 million Cook County properties, are the fuel that keeps the second largest county in America running. But how we manage that money can —and must—keep evolving.

The future of government is digital, transparent, and accessible. As long as I serve as your Treasurer, I aim to keep leading my office in that direction.

COOK COUNTY TREASURER'S OFFICE
Cook County Treasurer's Office
118 North Clark Street, Room 112
Chicago, Illinois 60602
(312) 443-5100
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Payments
Payment Plan Calculator
Check Your Payment Status or Make an Online Payment
Pay by Mail or in Person
Pay At Chase Bank
Pay At Your Local Community Bank
Get a Copy of Your Tax Bill
Returned Checks
Information about Prior Year Property Taxes
If Taxes Were Sold
Single or Multiple Payments Via ACH
Multiple Payments Via Wire Transfer
Exemptions and Savings
Exemption History Search
Homeowner Exemption
Senior Citizen Homestead Exemption
Senior Citizen Assessment Freeze Exemption
Persons with Disability Exemption
Home Improvement Exemption
Property Tax Relief for Military Personnel
Disabled Veteran Homestead Exemption
First Responder's Surviving Spouse Tax Abatement
Refunds
Refund Informational Videos
Overpayment Refund Search
Overpayment Refund Status Search
How to Apply for a Property Tax Refund
Uncashed Check Search
Property Tax Appeal Board Decisions
Estate Search
Services for Seniors
Exemptions
The Senior Citizen Real Estate Tax Deferral Program
Third-Party Notification
Disabled Veteran Homestead Exemption
Understanding Your Taxes
How the Illinois Property Tax System Works
Cómo Funciona el Sistema de Impuestos a la Propiedad en Illinois
Understanding Your Tax Bill
Get a Copy of Your Tax Bill
About Your Property Index Number (PIN)
Update Your Name or Mailing Address
Monitoring Your Mortgage
Taxing Districts' Financial Statements and Disclosures
Receive Your Tax Bill By Email
Sign In to Your Electronic Billing Account
20-Year Tax Bill History
View Taxing District Debt Attributed to Your Property
Tax and Scavenger Sales
General Information
Search to See If Your Property Has Sold Taxes
Foreign Language Brochures
Foreign Language Brochures
Forms
Update Your Name or Mailing Address
Duplicate or Overpayment Refund
Property Tax Appeal Board Decisions
Certificate of Error Refund
Third Party Notification Request
Property Tax Relief for Military Personnel
Freedom of Information Act (FOIA) Request
The Senior Citizen Real Estate Tax Deferral Program
About the Office
Duties and Responsibilities of the Cook County Treasurer
Maria Pappas, Cook County Treasurer's Biography
Maria Pappas, Cook County Treasurer's Resume
Freedom of Information Requests
State of the Office
Investment Policy
Frequently Asked Questions
News and Press Videos
News and Press Videos
Important Dates
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