What is the sales tax rate in Illinois?

Illinois’s statewide sales tax rate is 6.25%. Cities and counties can add a local sales tax on top, so the combined rate at checkout is often higher — enter your local rate in the calculator to get your exact total.

How much is sales tax on $100 in Illinois?

At Illinois’s 6.25% state rate, sales tax on $100 is $6.25, for a total of $106.25, before any local tax. Enter your exact amount and combined local rate above for a precise figure.

How do I calculate Illinois sales tax?

Multiply the price by the tax rate as a decimal. In Illinois: price × 6.25% = sales tax. For example, $500 × 6.25% = $31.25. The calculator does this instantly and also works backward from a tax-inclusive total.

Illinois Sales Tax Calculator

Illinois’s statewide sales tax rate is 6.25% — calculate the tax on any purchase instantly.

The statewide base sales tax rate in Illinois is 6.25%. On a $100 purchase that comes to $6.25 in sales tax, for a total of $106.25. Cities and counties can add a local sales tax on top, so what you actually pay at checkout is often a little higher.

The calculator below is set to Illinois’s 6.25% state rate. Add your local city or county rate in the second field to match your exact combined rate, or switch to “remove tax” to find the pre-tax price from a tax-inclusive total.

Sales Tax Calculator

Add or Remove Sales Tax

Results

Final Price (Gross)

$110.00

Pre-Tax Price (Net): $100.00

Price Composition

$100.00

$10.00

Pre-Tax Amount

Primary Tax

Pre-Tax Price (Net)

$100.00

Primary Tax

$10.00

Total Tax Amount

$10.00

Final Price (Gross)

$110.00

Sales Tax Guide

Calculate sales tax, VAT, and stacked tax structures

Understanding sales tax conversions and rate compositions is critical for retailers, buyers, and financial modeling. Different regions use diverse models—ranging from a flat Value Added Tax (VAT) in the EU to state, county, and municipal local sales taxes in the United States. Stacked or compound tax configurations allow you to accurately model your local purchase or sale liability. For official guidelines on business sales tax obligations, refer to the U.S. Internal Revenue Service (IRS) or the UK HM Revenue & Customs (HMRC).

"Accurately breaking down pre-tax prices and tax sums protects budgets and ensures accounting compliance."

Gross-up vs. Scorporation

Ensure you select "Add Tax" to add tax to a net base, or "Remove Tax" to find the pre-tax matrah/base of a retail price.

State and Local Taxes

In the US, combined sales tax rates average state and county components. Enter local rates separately to see a granular cost breakdown.

Check Local Nexus Rules

E-commerce and physical sellers must collect sales tax based on their shipping nexus. Check state tax departments for registration requirements.

Illinois sales tax on common amounts

At the 6.25% Illinois state rate, before any local city or county tax.

Purchase amount	Sales tax	Total
$25	$1.56	$26.56
$50	$3.13	$53.13
$100	$6.25	$106.25
$500	$31.25	$531.25
$1,000	$62.50	$1,062.50

Frequently Asked Questions

Illinois’s statewide sales tax rate is 6.25%. Cities and counties can add a local sales tax on top, so the combined rate at checkout is often higher — enter your local rate in the calculator to get your exact total.

Sales tax by state

US states

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