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Connecticut: gas tax

How much state tax you pay on each gallon of gasoline and diesel.

Single detailed source

State gasoline tax	25.0¢ per gallon
State diesel tax	49.9¢ per gallon

Rates include state excise taxes and per-gallon fees, not the 18.4¢ federal tax or most local taxes. Several states adjust rates every January or July, and some suspended collection for part of 2026.

General information only, not legal, insurance or financial advice. Not affiliated with any government agency. Exceptions can apply. Confirm with the state agency, the court or a licensed professional in Connecticut.

How Connecticut compares

25¢ ranks 35 of 51 (1 = highest) for state gas tax (cents per gallon).

Lowest 8.9¢Highest 73.6¢

Also for Connecticut: Car insurance by state in Connecticut · Claim deadlines in Connecticut · Small claims limits in Connecticut · Total loss rules in Connecticut · Shared fault rules in Connecticut · Accident reporting rules in Connecticut · Lemon law rules in Connecticut · Sales tax rates in Connecticut · Phone-while-driving laws in Connecticut · Motorcycle helmet laws in Connecticut · Uninsured drivers in Connecticut · All Connecticut rules on one page

How we checked this

Rates come from the Tax Foundation's July 2026 table of state gasoline and diesel taxes, which combines excise taxes and per-gallon fees. Last checked: November 12, 2026. Laws change; confirm with the state agency or a licensed professional before acting.

Cross-checked sources agree   Checked on official source confirmed on a government, court or legislature site   Single detailed source one detailed table built from statutes or official data   Under review sources disagree; read the note and the law.