State gas taxes · EIA figures for July 2026
Oklahoma gas tax
The 46th highest state gas tax of 51, and 13.8¢ below the state average. With the 18.4¢ federal tax, Oklahoma drivers pay 38.40¢ a gallon in fuel tax, about 10% of this week's price.
What makes up the tax on a gallon
| State excise tax | 19.00¢ |
|---|---|
| Other state taxes and fees | 1.00¢ |
| Federal excise tax | 18.40¢ |
| Total per gallon | 38.40¢ |
| On a 15-gallon fill | $5.76 |
| Over a typical year (480 gallons) | $184 |
| Regular gas this week | $3.943 |
From the EIA’s notes for Oklahoma: Petroleum Storage Underground Tank Release fee: $0.0100/gal on gasoline, diesel fuel and blended fuel (gasohol, ethanol and fuel grade ethanol).
Source: EIA federal and state motor fuel taxes, July 2026. The federal rate has not changed since 1993. County and city taxes are not included, so some drivers pay a little more.
Fuel tax in Oklahoma and its neighbours
Across the line in New Mexico, state tax is 1.1¢ a gallon lower, which is $0.17 less tax on a 15-gallon fill.
| State | State tax | Versus OK | On a 15-gal tank |
|---|---|---|---|
| New Mexico | 18.9¢ | −1.1¢ | −$0.17 |
| Texas | 20.0¢ | Same | Same |
| Oklahoma | 20.0¢ | — | — |
| Arkansas | 25.0¢ | +5.0¢ | +$0.75 |
| Kansas | 25.0¢ | +5.0¢ | +$0.75 |
| Missouri | 30.0¢ | +10.0¢ | +$1.50 |
| Colorado | 30.2¢ | +10.2¢ | +$1.53 |
Where Oklahoma sits in the ranking
| 44. Delaware | 23.00¢ |
|---|---|
| 45. Louisiana | 20.93¢ |
| 46. Oklahoma | 20.00¢ |
| 47. Texas | 20.00¢ |
| 48. Arizona | 19.00¢ |
Ranked by total state tax per gallon, highest first. See all 51 ranked.
What this means for your driving
Tax is a fixed number of cents on every gallon, so the less fuel you burn, the less of it you pay. A car that gets 30 mpg pays $154 a year in fuel tax over 12,000 miles in Oklahoma; a pickup at 19 mpg pays $243.
Work out a trip or a year of driving with the Oklahoma fuel cost calculator, or see Oklahoma gas prices this week.
Oklahoma gas tax questions
- What is the gas tax in Oklahoma?
- Oklahoma charges 20.00¢ per gallon of gasoline in state tax: 19.00¢ of excise tax plus 1.00¢ in other per-gallon taxes and fees, according to the EIA's table updated July 2026. Add the 18.4¢ federal tax and drivers pay 38.40¢ a gallon in fuel tax.
- How does Oklahoma's gas tax compare with other states?
- It is the 46th highest of 51 (the 50 states and D.C.), and 13.8¢ a gallon below the average state tax of 33.8¢.
- How much gas tax does a Oklahoma driver pay in a year?
- About $184 in state and federal fuel tax for a typical year of 480 gallons (roughly 12,000 miles at 25 mpg), of which $96 goes to the state. A 15-gallon fill carries $5.76 of tax.
- Is gas tax included in the price at the pump?
- Yes. Federal and state per-gallon fuel taxes are built into the price posted on the sign; they are not added at the register. That is why tax differences between neighbouring states show up directly in pump prices.
- Which neighbouring state has a lower gas tax than Oklahoma?
- New Mexico has the lowest state gas tax of Oklahoma's neighbours, at 18.88¢ a gallon. That is 1.1¢ less, or $0.17 on a 15-gallon fill.