Colorado Gas Tax
What Colorado and the federal government charge per gallon of gasoline, from U.S. Energy Information Administration data as of July 2026.
What makes up Colorado’s 48.6¢
| Colorado state excise tax | 22.0¢ |
| Other Colorado taxes & fees sales/use taxes, inspection and environmental fees | 8.2¢ |
| Total Colorado state tax | 30.2¢ |
| Federal excise + LUST fee 18.3¢ excise + 0.1¢ LUST, unchanged since 1993 | 18.4¢ |
| Combined state + federal | 48.6¢ |
Bridge and Tunnel Impact (BTI) Fee: $0.0700/gal, diesel only. Environmental Response Surcharge (ERS): $0.0125/gal, gasoline and diesel. Fuel Impact Reduction Fee (FIRF): $0.006125/gal, gasoline and diesel. Perfluoroalkyl and Polyfluoroalkyl Substances Fee (PFAS): $0.003125/gal, gasoline and diesel. Road Usage Fee (RUF): $0.0600/gal, gasoline and diesel.
How much of a gallon in Colorado is tax
Colorado gasoline currently averages $4.23 a gallon. Against that, the 48.6¢ of combined state and federal tax is about 11.5% of what a driver pays — with local taxes, where they apply, on top.
Tax rate from EIA as of July 2026; pump price is the current EIA weekly average. The two are published on different schedules, so the share moves as prices move even when the tax does not.
Colorado vs. the other 50 states
Colorado’s state gas tax of 30.2¢ is 3.6¢ below the 33.8¢ average across 50 states and D.C. — the 27th-highest, or equivalently the 25th-lowest.
Colorado gas tax, answered
- What is the gas tax in Colorado?
- Colorado charges 30.2¢ per gallon in state gasoline taxes — 22.0¢ of state excise tax plus 8.2¢ in other state taxes and fees. Adding the 18.4¢ federal tax brings the total to 48.6¢ per gallon, according to U.S. Energy Information Administration data as of July 2026. These are state and federal taxes only and exclude county and local taxes.
- How does Colorado's gas tax compare to other states?
- Colorado's state gasoline tax of 30.2¢ per gallon ranks 27th-highest of the 50 states and D.C. that EIA lists, against an average of 33.8¢. The highest is California at 73.6¢ and the lowest is Alaska at 8.9¢.
- What is the federal gas tax in Colorado?
- The federal gasoline tax is 18.4¢ per gallon in Colorado, the same as in every other state — 18.3¢ of excise tax plus a 0.1¢ Leaking Underground Storage Tank fee. It has been unchanged since 1993.
- How much of the price of gas in Colorado is tax?
- With Colorado gasoline averaging $4.23 per gallon, the 48.6¢ of combined state and federal tax is about 11.5% of the pump price. Local taxes, where they apply, are on top of that.
- Does Colorado charge local gas taxes too?
- EIA does not flag Colorado as a state where local option taxes are allowed. Its table covers taxes of general application and excludes county and local taxes in every state, so treat the figures here as state and federal only.
Related to Colorado gas tax
Tax rates from the U.S. Energy Information Administration, “Federal and state motor fuels taxes”, edition July 2026 (revised August 2026) (as of July 2026), published on EIA’s Petroleum Marketing Monthly page and reissued each January and July. EIA lists taxes “of general application … exclusive of county and local taxes”; rates are for gasoline.