Illinois Sales Tax Calculator

How to use

1. Put the untaxed price into the Amount box.
2. Enter the combined rate: 6.25 for the state base, approximately 8.9 as a typical average, or your exact local figure.
3. Keep the mode on Add tax to amount, or switch to Remove tax from total for receipts.
4. Use the net amount, tax, and gross values returned.

General information only — not medical, financial or legal advice. Figures cross-checked against public official sources (IRS / HMRC / NHS / WHO guidance); content last reviewed September 2026. For decisions that matter, confirm with a licensed professional in your country.

About this tool

Illinois charges a 6.25 percent state base, but the rates people actually pay come from home-rule cities and regional layers on top, pushing the average combined figure to approximately 8.9 and putting Chicago near 10.25, among the steepest big-city totals in the country. This calculator prices any of those figures. A 100 dollar sale at the base adds 6.25 for a 106.25 total, while 1,000 dollars in Chicago at 10.25 adds 102.50 for a 1,102.50 total. Groceries are taxed at a reduced 1 percent state rate rather than the full base, though local portions still apply to food in most places. Flip to Remove mode and the tool divides any receipt total by 1 plus the rate to recover the pre-tax price. Results are estimates from the rate entered; Illinois home-rule and regional taxes vary widely. Check current rates with the Illinois Department of Revenue. Not tax advice.Home-rule municipalities in Illinois set their own rates, which is why the map is patchwork rather than tiered: Chicago, suburbs, and downstate towns each construct different stacks. Regional transportation authorities add their slice across the metro area. Grocery relief at the state level dates back decades and survives in current law.

FAQ

Rate this tool

Your rating stays in this browser (local storage) — nothing is sent to any server.