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  Maintenance Notice

The Department of Revenue is performing planned maintenance on the Cook County Taxpayer Portal. The Portal will be unavailable on April 3rd, from 3:00PM to approximately 5:00PM. Thank you for your patience while we perform important updates to the Portal.

  Home Rule Tax Update

1/9/2023 - Great News! We now accept payment by credit card!

There will be a 2.1% processing fee for most payments made by credit card.

11/8/2021 - Firearm and Firearm Ammunition Tax must be collected beginning November 15, 2021

On November 4, 2021, the Cook County Board of Commissioners amended the Firearm and Firearm Ammunition Tax Ordinance to address the uniformity concerns expressed by the Illinois Supreme Court in the Guns Save Life ruling. The amendment was effective immediately. To allow time for retailers to comply with the collection requirement, firearm retailers and firearm ammunition retailers must begin collecting the taxes on November 15, 2021. Failure to collect and remit the taxes may subject retailers to interest and penalties. If you have any questions, please submit a General Inquiry service request through your Online Portal Profile or send an email to

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