What is the sales tax for Markham, Illinois? - The sales tax for Markham, Illinois is 10.5% as of 2025. 10.5% is the combine sales tax from 6.25% of Illinois state sales tax, 1.5% of local sales tax, and 1.75% of Cook county sales tax.
| State | Illinois | State Tax | 6.25% |
|---|---|---|---|
| City | Markham | City Tax | 1.5% |
| County | Cook | County Tax | 1.75% |
| Special Tax | 1% | ||
| Total Sales Tax | 10.5% | ||
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