City rate guide · Reviewed August 11, 2026
Wonder Lake, Illinois Sales Tax Rate
The combined sales tax rate in Wonder Lake, Illinois is 8.5% as of 2026. That includes the Illinois state rate of 6.25%.
Located in McHenry County.
Sales tax calculator for Wonder Lake
- Sales tax (8.5%)
- $8.50
- Total with tax
- $108.50
How this rate is composed
The Illinois state sales tax rate is 6.25%. The combined 8.5% rate for Wonder Lake comes from Illinois DOR machine-readable rate file (ORDMACHE) (2026 Q3).
Combined general-merchandise retailers' occupation tax rate for the municipality or unincorporated county area.
Business-district and home-rule address-level layers can change the rate at specific addresses; grocery rates differ.
Rates change on official schedules — confirm the current rate and effective date against the source above before filing.
Related local sales tax rates in Illinois
Compare the county and same-type jurisdictions with the closest combined rates.
Wonder Lake sales tax questions
What is the sales tax rate in Wonder Lake, Illinois?
The combined sales tax rate is 8.5%. It includes the Illinois state rate of 6.25% and applicable local rates.
How much sales tax is charged on a $100 purchase in Wonder Lake?
At the 8.5% combined rate, a $100 taxable purchase produces $8.50 in sales tax.
When was the Wonder Lake sales tax rate reviewed?
Prophit.ai reviewed this guide on 2026-08-11 using Illinois DOR machine-readable rate file (ORDMACHE). Confirm the official source before filing because rates can change.
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