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Illinois Gas Tax (2026)

Conditional: About 66.4 cents/gallon in total state gasoline taxes (48.3c excise + ~17c prepaid sales tax + fees), excludes the 18.4c federal tax; the excise is indexed and adjusts each July 1.

ConditionalVerified May 31, 2026

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Official source: tax.illinois.gov →

General legal information, not legal advice — verify important decisions with a licensed attorney.

Gas Tax in states bordering Illinois

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

IndianaConditional
About 53.5 cents/gallon in total state gasoline taxes (36c excise + ~17.5c gasoline use tax), excludes the 18.4c federal tax. The use-tax portion is recalculated monthly.
Verified May 31, 2026 · Source: in.gov · Full Indiana rule →
IowaInfo
About 30 cents/gallon state gasoline excise (varies slightly by ethanol blend), excludes the 18.4c federal tax.
Verified May 31, 2026 · Source: revenue.iowa.gov · Full Iowa rule →
KentuckyInfo
26.4 cents/gallon in state taxes & fees (25.0c motor-fuels tax + 1.4c environmental fee), FY2026; a temporary 10c cut took effect May 11, 2026 amid a fuel-price spike.
Verified May 31, 2026 · Source: revenue.ky.gov · Full Kentucky rule →
MissouriInfo
29.5 cents/gallon state motor-fuel tax — the final step of the SB 262 phase-in, in effect since July 1, 2025, with no further increases scheduled and no inflation indexing; excludes the 18.4c federal tax.
Verified Jul 30, 2026 · Source: dor.mo.gov · Full Missouri rule →
WisconsinInfo
About 33.9 cents/gallon in state taxes & fees (30.9c excise + 2c petroleum inspection fee; excise indexed to inflation); excludes the 18.4c federal tax.
Verified May 31, 2026 · Source: revenue.wi.gov · Full Wisconsin rule →

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