Oregon Gas Tax Calculator
The Oregon state gas tax is about 40.0¢/gallon. Calculate your total gas tax (state + federal) below.
What is the gas tax in Oregon?
The Oregon state gas tax is approximately 40.0 cents per gallon, which is above the rough national average of around 32 cents per gallon. On top of that, the federal gas tax adds a flat 18.4 cents per gallon everywhere in the US, so drivers in Oregon pay a combined rate on the higher end nationally.
How much gas tax will I pay in Oregon?
Use the calculator above to enter how many gallons you're purchasing and see the exact breakdown of Oregon state tax, federal tax, and total tax on that fill-up.
This is an approximate combined state gas tax rate for estimation purposes — actual rates change periodically and may include additional local taxes not reflected here.
Frequently Asked Questions
What is the gas tax rate in Oregon?
The Oregon state gas tax is approximately 40.0 cents per gallon. Combined with the federal gas tax of 18.4 cents per gallon, use the calculator above to see the total tax on your fill-up.
Is Oregon's gas tax above or below the national average?
Oregon's gas tax of about 40.0 cents per gallon is above the rough national average of around 32 cents per gallon, putting Oregon among the higher gas-tax states.
How much federal gas tax do I pay in Oregon?
The federal gas tax is a flat 18.4 cents per gallon in every state, including Oregon. This is added on top of Oregon's own state gas tax of about 40.0 cents per gallon.
How much tax will I pay on 15 gallons of gas in Oregon?
On 15 gallons in Oregon, you'd pay roughly $6.00 in state gas tax and $2.76 in federal gas tax, for a total of about $8.76. Adjust the gallons in the calculator above for your own fill-up.
Why do gas prices vary within Oregon?
Beyond the state gas tax, local factors like distribution costs, competition among stations, and proximity to refineries or terminals can cause gas prices to vary from city to city within Oregon, even though the state and federal tax rate stays the same everywhere.
Does Oregon's gas tax change often?
It depends on state law — some states adjust their gas tax rate periodically based on inflation or fuel price formulas, while others require new legislation to change the rate. Check Oregon's department of transportation or revenue for the latest updates.
What is gas tax revenue used for in Oregon?
Gas tax revenue in Oregon, like most states, primarily funds road and bridge construction and maintenance, with some states also directing a portion toward public transit projects.