What is North Dakota's gas tax rate?

North Dakota charges a flat 23 cents per gallon excise tax on gasoline, and the same 23 cents per gallon on special fuel such as diesel. These rates are added to the federal excise of 18.4 cents for gasoline and 24.4 cents for diesel.

Is the gas tax included in the pump price?

Yes. Both the North Dakota excise and the federal excise are built into the per-gallon price you see at the pump, so you do not pay them separately. This tool simply breaks out how much of your annual spend is tax.

How is the tax per mile calculated?

In mileage mode the tool divides your annual miles by your vehicle's MPG to find gallons used, multiplies by the combined per-gallon tax, then divides the total tax back by miles. A more efficient vehicle pays less fuel tax per mile.

Does North Dakota index its fuel tax to inflation?

North Dakota's fuel tax is a fixed cents-per-gallon rate set by statute, not automatically indexed to inflation or fuel prices. It changes only when the legislature amends the rate, so it stays flat between sessions.

Are the federal rates the same as the state rates?

No. The federal gasoline excise has been 18.4 cents per gallon since 1993 and the federal diesel excise is 24.4 cents. North Dakota adds its own 23 cents per gallon on top of those federal amounts.

North Dakota Gas Tax Calculator

Email me this result

Get this tool's output sent to your inbox, plus one useful tool a week. No spam, unsubscribe any time.

Every gallon you buy in North Dakota carries both a state and a federal excise tax baked into the pump price. This calculator separates out how much fuel tax you pay over a year and, if you drive a lot, how much that works out to per mile.

How it works

The tool finds your annual gallons two ways, then multiplies by the per-gallon excise rates:

gallons (mileage mode) = annual miles ÷ MPG
gallons (tank mode)    = tank size × fill-ups per year
state tax   = gallons × $0.23
federal tax = gallons × $0.184 (gas) or $0.244 (diesel)
tax per mile = (state + federal per gallon) ÷ MPG

North Dakota’s 23 cents per gallon applies equally to gasoline and special fuel (diesel), so the state share is the same for both; only the federal rate differs between the two fuels.

Example

Driving 12,000 miles a year in a 25-MPG car uses about 480 gallons. North Dakota excise at 23 cents adds about 110 dollars, and the 18.4-cent federal excise adds about 88 dollars, for roughly 198 dollars of fuel tax a year — about 1.65 cents of tax per mile driven.

Notes

For guidance only. Rates are fixed cents-per-gallon amounts that change only when the legislature acts, so confirm the current figures at tax.nd.gov. Pump prices also include general overhead and, for some blends, other fees not modeled here. Electric-vehicle drivers pay a separate annual road-use fee instead of fuel tax.