Online Calculators since 2009
Cook County in Illinois has a tax rate of 9% for 2021, this includes the Illinois Sales Tax Rate of 6.25% and Local Sales Tax Rates in Cook County totaling 2.75%. You can find more tax rates and allowances for Cook County and Illinois in the 2021 Illinois Tax Tables.
Illinois has 802 seperate areas each with their own Sales Tax rates with the lowest Sales Tax rate in Illinois being 6.25% and the highest Sales Tax rate in Illinois at 10%.
Sales Tax in Cook County, Illinois is calculated using the following formula:
You can calculate Sales Tax manually using the formula or use the Cook County Sales Tax Calculator or compare Sales Tax between different locations within Illinois using the Illinois State Sales Tax Comparison Calculator.