Wonder Lake property tax: where it goes
A typical Wonder Lake house pays about $5,600 a year on the property tax bill, including flat charges on the same bill. Estimated from public rates, not anyone's actual bill.
A Wonder Lake house pays 7.363% of its taxable value in property tax. For a house at $84,067 of value before exemptions with the homestead exemption, that's about $5,601 a year.
Tax is levied on Equalized assessed value after exemptions..
2026 rates are not set until spring 2027.
Who taxes this house
| Taxing agency | Rate | On $84,067 |
|---|---|---|
| McHenry County | 0.4987% | $379 |
| McHenry County Conservation District | 0.1769% | $135 |
| McHenry County College 528 (schools) | 0.2446% | $186 |
| Harrison School District 36 (schools) | 2.9909% | $2,275 |
| McHenry High School District 156 (schools) | 1.8782% | $1,429 |
| Wonder Lake Fire Protection District | 0.5091% | $387 |
| McHenry Area Library | 0.2367% | $180 |
| Wonder Lake Special Service Area 9 | 0.1857% | $141 |
| McHenry Township | 0.0895% | $68 |
| McHenry Township Road & Bridge | 0.189% | $144 |
| Village of Wonder Lake | 0.3638% | $277 |
| Total | 7.363% | $5,601 |
2025 tax year (payable 2026), McHenry County, tax code 09085 (McHenry Township). Exemptions applied: General homestead exemption (owner-occupied, up to) ($8,000).
Ways to pay less
- Seniors 65+: senior homestead exemption. Reduces equalized assessed value by up to $8,000. How: See the McHenry County Assessments exemptions page.
- Seniors 65+: low-income assessment freeze. Freezes the equalized assessed value at the base year (year before first qualifying). Must be 65 or older, household income $75,000 or less. How: See the McHenry County Assessments exemptions page.
- Persons with disabilities exemption. $2,000 off equalized assessed value annually. How: See the McHenry County Assessments exemptions page.
Dates
| When | What |
|---|---|
| November 16, 2026 (in 11 days) | Deadline for filing an assessment complaint, at midnight. |
Sources
- McHenry County 2025 District Rates by Taxcode
- McHenry County exemptions
- McHenry County property tax 101
- McHenry County assessments
Checked October 31, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.
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