Illinois Sales Tax Calculator

How sales tax works in Illinois

Illinois charges a statewide base sales tax of 6.25%. Illinois levies a 6.25% state Retailers' Occupation Tax on general merchandise (0% on groceries since January 1, 2026; 1% on prescription drugs and medicines). Counties and municipalities impose additional sales taxes, with combined rates varying by location. Choose your county above to load its sourced combined rate, or switch to Remove tax to work back from a tax-inclusive total. Your result updates the page link, so you can copy a permalink to any calculation.

sales tax = pre-tax price x (state rate + local rate) / 100
total = pre-tax price + sales tax

Worked example

A $250.00 purchase in Chicago (Cook County), at the 10.25% combined rate (6.25% state + 4% local):

1. Combined rate = 6.25% + 4% = 10.25%.
2. Sales tax = 250 x 0.1025 = $25.63.
3. Total = 250 + 25.63 = $275.63.

What is taxed in Illinois

Illinois eliminated the 1% state grocery tax effective January 1, 2026. Groceries (food sold for home consumption) are now exempt from the state Retailers' Occupation Tax. Some local jurisdictions may impose a local grocery tax - check with the Illinois Department of Revenue for local rates.

Source: Illinois Department of Revenue.

Illinois sales tax rates by county

Combined rates (6.25% state plus local), sourced from the Illinois Department of Revenue and verified Jun 12, 2026. For an exact rate by address use the official Illinois Department of Revenue rate lookup; local rates can vary within a county and change over time.