Illinois Sales Tax Calculator
The average combined sales tax rate in Illinois is 8.92% in 2026 — a 6.25% state rate plus about 2.67% in local taxes. On a $100 purchase that's $8.92 in tax for a $108.92 total. Enter any amount below to add or remove Illinois sales tax instantly.
$100.00 total
Before tax: $100.00 · Sales tax: $0.00 (0%)
State & average combined rates: Tax Foundation 2026. Local rates vary by city/county — adjust the rate for an exact figure. How we calculate →
Illinois sales tax rate in 2026
Illinois's statewide base sales tax rate is 6.25%. On top of that, counties, cities and special districts add local taxes that average about 2.67%, for an average combined rate of 8.92%. These figures come from the Tax Foundation's 2026 state and local sales-tax data.
Because local rates differ from city to city, the auto-filled 8.92% is the population-weighted state average. For an exact figure at a specific address, adjust the rate in the calculator to your local combined rate.
How much is sales tax on a purchase in Illinois?
At Illinois's average combined rate of 8.92%, here's the tax and total on common amounts:
$10 → $0.89 tax, $10.89 total · $50 → $4.46 tax, $54.46 total · $100 → $8.92 tax, $108.92 total · $1,000 → $89.20 tax, $1089.20 total.
Enter your own amount in the calculator above for an exact figure, or switch to reverse mode to find the pre-tax price from a total.
How Illinois sales tax is calculated
Sales tax is the price multiplied by the rate as a decimal. Using Illinois's 8.92% combined rate, a $100 item is 100 × 0.0892 = $8.92 in tax, for a $108.92 total. To work backwards from a total that already includes tax, divide by one plus the rate — the calculator's Remove tax mode does this in one step.
Illinois sales tax — frequently asked questions
What is the sales tax in Illinois?
Illinois's statewide sales tax rate is 6.25% in 2026. With local taxes, the average combined rate is 8.92%.
How much is sales tax on $100 in Illinois?
At Illinois's average combined rate of 8.92%, sales tax on a $100 purchase is $8.92, for a total of $108.92. Enter any amount in the calculator above for an exact figure.
How do I calculate Illinois sales tax?
Multiply the price by 8.92% as a decimal (0.0892). For example, $50 × 0.0892 = $4.46 tax, for a $54.46 total. The calculator above fills in the rate and does it instantly.
Does Illinois have local sales taxes?
Yes. On top of the 6.25% state rate, Illinois localities add an average of about 2.67%, which is why the combined rate averages 8.92% and varies by city and county.
How do I remove sales tax from a total in Illinois?
Divide the total by one plus the rate. On a $108.92 total at 8.92%, the pre-tax price is $100.00 and the tax was $8.92. Use the “Remove tax” mode above to do this automatically.
Sales tax calculators by state
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