What rate does the Illinois sales tax calculator use?
It starts with a 8.93% combined estimate, made from a 6.25% state rate and 2.68% average local rate.
Illinois Sales Tax Calculator
Estimate a purchase total in Illinois with a state-specific combined sales tax rate default.
What is the Illinois sales tax rate?
Illinois’s state sales tax rate is 6.25%. With an average local rate of 2.68% added by cities and counties, the combined Illinois sales tax averages about 8.93%. Your exact rate depends on the city, county, and any special districts at the point of sale.
On a $85 purchase, a 8.93% combined rate adds about $7.59 in tax for a $92.59 total. Enter your own price above for an exact figure.
Tax rates as of . Tax Foundation state and local sales tax rates.
Illinois planning notes
Use this Illinois sales tax calculator when you want a quick purchase total based on a state-specific starting rate. The calculator opens with a combined 8.93% estimate that includes the Illinois state rate plus an average local component where local sales taxes are commonly added. Replace the rate with the exact city, county, or special district rate from your receipt or tax authority when precision matters. The page is intended for shopping estimates, invoice checks, and comparing before-tax and after-tax prices.
- State Sales Tax Rate
- 6.25
- Average Local Sales Tax Rate
- 2.68
- Combined Sales Tax Rate
- 8.93
- Example Pretax Purchase
- 85
- Estimated Tax On Example Purchase
- 7.59
Source: Tax Foundation state and local sales tax rates (accessed 2026-05-06).
Illinois Sales Tax Calculator FAQ
Can local Illinois sales tax be different?
Yes. City, county, transit, and special district taxes can make the checkout rate different from the statewide average shown here.
Should I enter a custom tax rate?
Enter the exact local rate when you have it. The prefilled value is meant to make a fast estimate visible before you customize the calculator.
Related calculators
Comparing prices across states? Open the general sales tax calculator to set any rate by hand, then check savings with the discount calculator for sale prices. For dining totals use the tip calculator, and to convert a rate into a markup try the percentage increase calculator.