Are your taxes delinquent? The Cook County Treasurer's Office website was designed to meet the Illinois Information Technology Accessibility Act and the Americans with Disabilities Act.

Find IRS forms and answers to tax questions. We help you understand and meet your federal tax responsibilities.

Catch up on all the key tax changes and updates coming in 2026—at your convenience. Webinar recordings are now available, so you can stay informed and ahead of the curve.

Learn about filing federal income tax. Check the status of your tax refund, find help filing your taxes, and get federal tax forms.

4 days ago · Here's what you should know about income tax, what it is, how it works, how to calculate it and which states don't have it.

Easily prep & file your federal tax return with H&R Block to maximize your refund. No matter how you choose to file taxes this year, our services are guaranteed.

The United States federal government and most state governments impose an income tax. They are determined by applying a tax rate, which may increase as income increases, to taxable income, …

Mission The County Treasurer’s Office is responsible for collecting, safeguarding, investing and distributing property tax funds.

4 days ago · The new budget for Chicago is now in effect and while some tax changes won't begin right away, others have already arrived.