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Live Data: April 2026

Lemont, IL Sales Tax Rate 2026

The combined sales tax rate in Lemont, Illinois is 10.300%.

Combined Rate 10.300%
State6.300% County1.800% City1.300%

Lemont Sales Tax Breakdown

Jurisdiction Rate
Illinois State Sales Tax 6.300%
County Sales Tax 1.800%
City / Municipal Tax 1.300%
Special District Tax 1.000%
Total Combined Rate 10.300%

Which County Is Lemont In?

Lemont falls within Cook, Illinois. Cook imposes a 1.800% county-level sales tax in addition to the Illinois state base rate.

Lemont ZIP Codes

The following ZIP codes are mapped to Lemont for sales tax purposes. All listed codes apply the 10.300% combined rate.

60439

Business Nexus in Illinois

Economic Nexus Threshold

Selling into Illinois from out of state? Once you exceed $100,000 in annual sales or 200 transactions, you must register and collect Illinois sales tax.

FAQ: Lemont Sales Tax

The combined sales tax rate in Lemont, Illinois is 10.300% as of 2026.
Multiply your purchase price by 10.300% to find the tax owed. A $500 purchase would include $51.50 in sales tax.
Groceries are generally taxable in Illinois. Check the official Department of Revenue for specific exemptions.
Vehicle purchases in Lemont are subject to the 10.300% combined rate, though some states apply different rules for vehicle sales. Verify with the Illinois Department of Revenue or DMV.
Register for a sales tax permit through the official Illinois Department of Revenue website. Registration is typically free and required before collecting any sales tax.

Sales Tax Calculator

Using 10.300% rate for Lemont, IL

$
Tax Amount $0.00
Total with Tax $100.00

Rate applied: 10.300% combined

Official Tax Authority

Illinois Department of Revenue

Filing Deadline: Returns due the 20th of the month following the filing period. File via MyTax Illinois.

Visit Official Portal (217) 782-3336