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Washington: gas tax

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

Single detailed source

State gasoline tax	60.2¢ per gallon
State diesel tax	63.2¢ 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 Washington.

How Washington compares

60.2¢ ranks 4 of 51 (1 = highest) for state gas tax (cents per gallon).

Lowest 8.9¢Highest 73.6¢

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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.