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Cook County, Illinois sales tax rates

Cook County sales tax range for 2025

10.25%

Illinois

6.25%

Cook County

1.75%

Chicago

1.25%

Regional Transport. Authority (rta)

1.0%

Total rate range

10.25%

*Rates are rounded to the nearest hundredth. Due to varying local sales tax rates, we strongly recommend our lookup and calculator tools on this page for the most accurate rates.

Cook County sales tax details

The minimum combined 2025 sales tax rate for Cook County, Illinois is 10.25%. This is the total of state, county, and city sales tax rates. The Illinois sales tax rate is currently 6.25%. The Cook County sales tax rate is 1.75%. 

Sales tax rate lookup and sales tax item calculator

Look up the current rate for a specific address using the same geolocation technology that powers the Avalara AvaTax rate calculation engine.

Tax rates can vary within a county, a city, or even a ZIP code. Using a street address helps to ensure more accurate rates and calculations when compared to relying on broader geographic indicators.

 

*Rates are rounded to the nearest hundredth.

Enter any U.S. address to get the sales tax rate for your exact location

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Minimum combined sales tax rate

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Calculate total amount

See your sales tax rate applied to any item price. Enter a numerical value with no commas or spaces.

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Automate your calculations

AvaTax offers street-level precision at the point of sale, eliminating the need to look up rates or maintain a database. Rate updates are pushed to your system automatically, based on the latest jurisdiction rules and regulations.

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