Sales tax calculator · 2026
The Illinois (IL) state sales tax rate is 6.25%. Local jurisdictions can add up to 4.75%, making the maximum combined rate 11.00%. The exact rate depends on the city or county of purchase. Chicago has the highest combined rate at 10.25%. Cook County suburbs add 1.75% county tax. Most downstate cities range from 6.25% to 8.75%.
State rate: 6.25% · max combined: 11.00%
IL rate used
6.25%
Sales tax
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Total price
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Sales tax is a consumption tax imposed on the sale of goods and certain services. In Illinois, the state rate is 6.25%. Counties and cities may add additional local sales taxes of up to 4.75%, making the total rate in some areas as high as 11.00%.
Sales Tax Formula
Tax Amount = Purchase Price × (6.25% ÷ 100)
Total Price = Purchase Price + Tax Amount
With local tax: Total Price = Purchase Price × (1 + 0.11)
Example Calculation
A $100 purchase in Illinois:
Sales tax = $100 × 6.25% = $6.25
Total = $106.25
Illinois rates vary sharply by jurisdiction. Chicago at 10.25% is among the highest in the US. Cook County suburbs range from 8.00-9.00%. Cities outside Cook County are typically 7.00-8.75% depending on local levies.
| City | Combined rate | Notes |
|---|---|---|
| Chicago | 10.25% | 6.25% state + 1.75% Cook Co. + 1.25% city + 1% RTA |
| Evanston | 10.25% | Cook County + Evanston city tax |
| Cicero | 9.00% | Cook County + Cicero local |
| Skokie | 9.00% | Cook County + Skokie district |
| Joliet | 8.75% | Will County + Joliet city |
| Rockford | 8.75% | Winnebago County + city |
| Springfield | 8.75% | Sangamon County + city |
| Peoria | 9.00% | Peoria County + city |
| Aurora | 8.25% | DuPage/Kane County (split jurisdiction) |
| Naperville | 7.75% | DuPage County |
| Waukegan | 8.00% | Lake County |
| Champaign | 9.00% | Champaign County + city |
| Elgin | 8.25% | Kane County + Elgin city |
| Bloomington | 8.75% | McLean County + city |
| Decatur | 8.75% | Macon County + city |
Rates as of 2026. Always verify with the Illinois Department of Revenue before filing.
Most tangible personal property is subject to sales tax in Illinois. Services may or may not be taxable — Illinois, like most states, exempts most services.Common exemptions and special rates include groceries, prescription drugs, and clothing (rules vary by state).
Out-of-state sellers may need to collect Illinois sales tax if they have economic nexus in the state. Most states now require remote sellers with over $100,000 in sales or 200 transactions to register and collect sales tax (South Dakota v. Wayfair, 2018). If you sell products to IL customers, check whether you need to register with the Illinois Department of Revenue.
The IL state sales tax rate is 6.25% as of 2026. Local jurisdictions may add up to 4.75%, so your actual rate depends on where the purchase is made. The combined maximum rate in Illinois is 11.00%.
If you have physical presence (store, office, warehouse) in Illinois, you must collect sales tax. If you sell online to IL customers and exceed economic nexus thresholds (typically $100K in sales or 200 transactions), you must also collect. Register with the Illinois Department of Revenue for a sales tax permit.
Illinois generally does not tax services, though there are exceptions such as. Examples include telecommunications, cable TV, and fabricated product labor. Check with a tax professional for your specific service.
Multiply the purchase price by 6.25% (state rate). For example, a $100 purchase = $6.25 tax, total $106.25. In Illinois, you may need to add local taxes depending on the city or county of sale. Use our calculator above for any amount.
Illinois rates vary sharply by jurisdiction. Chicago at 10.25% is among the highest in the US. Cook County suburbs range from 8.00-9.00%. Cities outside Cook County are typically 7.00-8.75% depending on local levies.