Taxes in Joliet
Joliet layers a real, meaningfully elevated local property-tax rate on top of Illinois's already-high statewide average, inside a Will County that carries one of the nation's highest median property tax bills.
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Learn moreA meaningfully elevated local property-tax rate
Joliet's own median effective property tax rate ran 2.70% per Ownwell -- above Illinois's statewide 1.88% Tax Foundation-cited figure -- inside a Will County that ranks 34th of 3,143 US counties by median property tax ($4,921/year on a $240,500 median-value home).
The City of Joliet's own levy held flat
The City of Joliet's own FY2026 budget held the City's portion of the property-tax levy flat for a second consecutive year -- a real, disclosed, city-specific fact distinct from the county's broader tax burden.
Illinois's flat income tax and Joliet's combined sales tax
Illinois's simple flat 4.95% state income tax applies to wages (with a full retirement-income exemption -- see illinois.js), and Joliet's combined sales tax runs approximately 9.0% (6.25% state + 1% Will County + 1.75% Joliet).
Key takeaways
- Joliet's 2.70% effective property tax rate runs above Illinois's statewide average, inside a nationally high-tax Will County.
- The City of Joliet's own property-tax levy has held flat for two consecutive years, even as the county-level burden remains real and elevated.
- Illinois's flat 4.95% income tax fully exempts retirement income; Joliet's combined sales tax runs approximately 9.0%.
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