Monmouth Sales Tax
What is the sales tax for Monmouth, Illinois? - The sales tax for Monmouth, Illinois is 11% as of 2026. 11% is the combine sales tax from 6.25% of Illinois state sales tax, 2% of local sales tax, and 1.75% of Warren county sales tax.
| State | Illinois | State Tax | 6.25% |
|---|---|---|---|
| City | Monmouth | City Tax | 2% |
| County | Warren | County Tax | 1.75% |
| Special Tax | 1% | ||
| Total Sales Tax | 11% | ||
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