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Sales tax in Cook County, Illinois

By Brent Chudoba, editor Updated

There is no single sales tax rate in Cook County. It runs from 9.25% to 12.25% depending on the exact address, because cities and special districts inside the county levy their own on top of the 6.25% state rate. The 6.25% state rate applies everywhere in the county; everything above that depends on where you are standing. These rates were read from Illinois's own published schedule and checked on September 9, 2026. The rate in each of the 136 cities is in the table below.

What is the sales tax rate in Cook County?

Sales tax rate components in Cook County, Illinois
Illinois state rate6.25%
Cook County rate1.75%
Lowest combined rate in the county9.25%
Highest combined rate in the county12.25%

The combined figures are the lowest and highest totals anywhere in Cook County, so the rows above do not add up to them.

What is the sales tax rate in each city in Cook County?

Illinois publishes the rate for every city it taxes. These are the combined rates, state and local together, as listed in Illinois's own rate file. Where a city shows a range, a special district covers only part of it, so the rate depends on the exact address.

Sales tax rate by city in Cook County, Illinois
CityAugust 1, 2026 to present
Alsip10.25%
Arlington Heights10.25%
Barrington10.25%
Barrington Hills9.25%
Bartlett11%
Bedford Park10.25%
Bellwood10.75%
Bensenville10.25%
Berkeley10.25%
Berwyn11%
Blue IslandRates in Blue Island run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside the Western Avenue Business Development District.10.25% to 11.25%
Bridgeview10.25%
Broadview10.25%
Brookfield10.25%
Buffalo Grove10.25%
Burbank10%
Burnham10.25%
Burr RidgeRates in Burr Ridge run from 9.5% to 10.5%: 9.5% outside any business district; 10.5% inside the Downtown Business District.9.5% to 10.5%
Calumet CityRates in Calumet City run from 11.25% to 12.25%: 11.25% outside any business district; 12.25% inside the Sibley/East End Avenue Business Development District.11.25% to 12.25%
Calumet Park10.25%
Chicago10.5%
Chicago Heights10.25%
Chicago RidgeRates in Chicago Ridge run from 10.25% to 10.75%: 10.25% outside any business district; 10.75% inside the Chicago Ridge Mall Business District No 1.10.25% to 10.75%
Cicero11%
Country Club Hills10.5%
Countryside10%
Crestwood10.25%
Deer Park10.25%
Deerfield10.25%
Des Plaines10.25%
Dixmoor9.25%
Dolton10%
East Dundee11.25%
East Hazel Crest9.75%
Elgin10.75%
Elk Grove Village10.25%
Elmhurst10.75%
Elmwood ParkRates in Elmwood Park run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside the Harlem Avenue/North Avenue Business District.10.25% to 11.25%
Evanston10.5%
Evergreen ParkRates in Evergreen Park run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside the Evergreen Park Place Business District.10.25% to 11.25%
Flossmoor10.25%
Ford Heights10.25%
Forest Park10.25%
Forest View10.25%
Frankfort10.25%
Franklin Park10.25%
Glencoe10.25%
GlenviewRates in Glenview run from 10% to 11%: 10% outside any business district; 11% inside the Chestnut Waukegan Business District.10% to 11%
Glenwood11.25%
Golf9.25%
Hanover Park10.25%
HarveyRates in Harvey run from 10.75% to 11.75%: 10.75% outside any business district; 11.75% inside the Dixie Highway Business District.10.75% to 11.75%
Harwood Heights10.5%
Hazel Crest10.25%
Hickory Hills10.25%
Hillside10.25%
Hinsdale10.25%
Hodgkins10.25%
Hoffman Estates10.25%
Homer Glen10.25%
Hometown9.25%
Homewood10.25%
Indian Head ParkRates in Indian Head Park run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside a business district. The Department lists business district addresses such as 6980 Wolf Rd or 6961 Vine St.10.25% to 11.25%
Inverness9.25%
Justice9.25%
Kenilworth10.25%
Lagrange10.25%
Lagrange ParkRates in Lagrange Park run from 9.25% to 10.25%: 9.25% outside any business district; 10.25% inside the 31st Street / Barnsdale Business District; 10.25% inside the 31st Street / Maple Avenue Business District; 10.25% inside the 31st Street / North La Grange Road Business District; 10.25% inside the Village Market Business District.9.25% to 10.25%
Lansing9.75%
Lemont10.25%
Lincolnwood10.5%
Lynwood9.25%
Lyons10.25%
Markham10.25%
Matteson10.25%
Maywood10.25%
McCook10.25%
Melrose Park10.75%
Merrionette Park10.25%
Midlothian10.25%
Morton GroveRates in Morton Grove run from 10.5% to 10.75%: 10.5% outside any business district; 10.75% inside the Dempster Waukegan Business District.10.5% to 10.75%
Mount ProspectRates in Mount Prospect run from 10.25% to 10.5%: 10.25% outside any business district; 10.5% inside the Mount Prospect Business District #1.10.25% to 10.5%
Niles10.5%
NorridgeRates in Norridge run from 10.75% to 11.75%: 10.75% outside any business district; 11.75% inside a business district. The Department lists business district addresses such as 4170 N Harlem Ave or 4050 N Harlem Ave.10.75% to 11.75%
North Riverside10.25%
Northbrook10.25%
Northfield10.25%
Northlake10.25%
Oak Brook9.75%
Oak Forest10.25%
Oak Lawn10.5%
Oak Park10.25%
Olympia Fields10.25%
Orland Hills10.25%
Orland Park10.5%
Palatine10.25%
Palos HeightsRates in Palos Heights run from 9.25% to 10.25%: 9.25% outside any business district; 10.25% inside the 127th and Harlem Business District.9.25% to 10.25%
Palos Hills9.25%
Palos Park10.25%
Park Forest10.25%
Park Ridge10.25%
Phoenix10.25%
Posen10.25%
Prospect Heights10.25%
Richton ParkRates in Richton Park run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside the Richton Park Sauk Trail Business District.10.25% to 11.25%
River Forest10.25%
River Grove11.25%
Riverdale10.25%
RiversideRates in Riverside run from 10.25% to 11.25%: 10.25% outside any business district; 11.25% inside the Harlem Avenue Business District No. 2; 11.25% inside the Ogden-Harlem Business District No. 3; 11.25% inside the Riverside Harlem Avenue Business District 1.10.25% to 11.25%
Robbins10.75%
Rolling Meadows10.5%
Roselle10.75%
Rosemont10.5%
Sauk Village9.25%
Schaumburg10.25%
Schiller Park10.75%
SkokieRates in Skokie run from 10.5% to 11.5%: 10.5% outside any business district; 11.5% inside a business district. The Department lists business district addresses such as 4999 Old Orchard Ctr or 4847 Old Orchard Ctr.10.5% to 11.5%
South Barrington10.25%
South Chicago Heights10.25%
South Holland9.75%
Steger9.25%
Stickney10.5%
Stone Park10.5%
Streamwood10.25%
Summit10.25%
Thornton10.25%
Tinley Park10.25%
University Park10.25%
Westchester10.25%
Western Springs10.25%
Wheeling10.25%
Willow Springs10.25%
Wilmette10.25%
Winnetka10.25%
Woodridge10.5%
Worth10.25%
Unincorporated Cook County9.25%

Source: Illinois rate file for August 1, 2026 to present, from Illinois's official rate page.

How much sales tax is that on a purchase in Cook County?

At 9.25%, a $100 purchase carries $9.25 in sales tax and a $1,000 purchase $92.50, at the lowest rate in the county. At the highest, 12.25%, the same purchases carry $12.25 and $122.50. That is general merchandise; Illinois taxes some categories, often groceries, differently, as the note below explains.

Cook County's lowest rate is the highest in Illinois. See every Illinois county.

Sales tax in counties next to Cook County

Cook County borders 8 counties, 3 of them in another state. The lowest rate next door is 6% in Berrien County, MI, which is $32.50 less on a $1,000 purchase than the lowest rate in Cook County.

Cook County and its neighbors, highest rate first
CountyCombined sales tax
Cook County, IL (this county)9.25% to 12.25%
McHenry County, IL7.5% to 9.5%
DuPage County, IL7.25% to 9.75%
Kane County, IL7.25% to 10.25%
Lake County, IL7.25% to 9.25%
Will County, IL7.25% to 10%
Lake County, IN7%
Porter County, IN7%
Berrien County, MI6%

Why the rate here is not the whole story

Illinois charges 6.25 percent statewide on general merchandise. Only 5 percent of that is kept by the state and 1.25 percent is passed straight through to the municipality or county where the sale is sourced, but the whole 6.25 percent is imposed by the state and every location in Illinois pays it. Municipalities, business districts and transit districts then add their own rates on boundaries that do not follow county lines, so a single rate for the whole county does not exist. The county itself levies 1.75 percent countywide. The Northern Illinois Transit Authority, the renamed Regional Transportation Authority, levies 1.25 percent across the whole county on top of that, a rate that rose by 0.25 points on August 1 2026. The floor of 9.25 percent is in unincorporated county. The ceiling of 12.25 percent is at Calumet City, and applies only at the specific addresses the state lists inside that municipality's business district. These figures are general merchandise rates. Qualifying drugs and medical appliances are taxed at a lower rate that starts at 1 percent statewide, and since January 1 2026 groceries carry no state rate at all although a municipality or county may impose 1 percent of its own, so neither belongs in the range here.

How do I find the exact rate for an address in Cook County?

Use Illinois's own address lookup. In Cook County the rate depends on the address, anywhere from 9.25% to 12.25%.

Who has to collect sales tax in Cook County?

Any seller with a physical presence in Illinois collects at the rate for the address of the sale; a remote seller does once it passes Illinois's economic nexus threshold. Illinois sales tax covers the statewide rules and what is exempt.

Work out your own numbers

Sources