New Jersey Gas Tax Calculator
This New Jersey gas tax calculator estimates how much state gasoline tax you pay a year based on how far you drive. New Jersey's state gasoline tax is 42 cents per gallon, as reported by the US Federal Highway Administration in Highway Statistics table MF-205 for 2024. Enter your annual mileage and your vehicle's fuel economy, and the calculator works out the gallons you burn and the state gas tax on them. Gas tax is a per-gallon excise that funds roads and transport, so unlike a percentage sales tax it does not rise with the pump price; you pay the same cents per gallon whether fuel is cheap or expensive. The figure here is the New Jersey state rate only. On top of it, every driver also pays the federal gasoline tax of 18.4 cents per gallon, and some states add a sales tax or extra fuel and environmental fees that raise the total at the pump. Use this to see the state portion of what you spend on fuel taxes and how driving more, or improving your fuel economy, changes it. The rate is sourced directly from the FHWA; the calculation is simply gallons times the rate.
New Jersey's state gasoline tax is 42 cents per gallon (US FHWA, 2024). Driving 12,000 miles a year at 25 mpg (480 gallons) costs about $201.60 in New Jersey gas tax.
How the New Jersey gas tax is calculated
gallons per year = annual miles / miles per gallon
annual state gas tax = gallons x 42 cents / 100
(the federal gas tax of 18.4 cents per gallon is additional)
New Jersey gas tax: frequently asked questions
How much is the gas tax in New Jersey?
New Jersey's state gasoline tax is 42 cents per gallon, as reported by the US Federal Highway Administration (Highway Statistics MF-205, 2024). On 480 gallons a year (about 12,000 miles at 25 mpg) that is roughly $201.60 in state gas tax.
Is this the total tax I pay at the pump in New Jersey?
Not necessarily. This is the New Jersey state gasoline tax rate per FHWA. The total at the pump also includes the federal gas tax of 18.4 cents per gallon and, in some states, sales tax or additional fuel and environmental fees. Pump prices and combined taxes can therefore be higher.
How is the New Jersey gas tax calculated for my driving?
Divide your annual miles by your vehicle's miles per gallon to get gallons used, then multiply by the 42 cents per gallon state rate. This calculator does that and shows your estimated annual New Jersey gas tax.
Where does the New Jersey gas tax rate come from?
From the US Federal Highway Administration, Highway Statistics table MF-205 (State Tax Rates on Motor Fuel), gasoline, 2024, verified as at Jun 25, 2026.
Official sources
- New Jersey state gasoline tax rate (2024): US Federal Highway Administration, Highway Statistics MF-205, as at Jun 25, 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 26 June 2026. See our methodology. General information, not financial advice. State gasoline tax rate as reported by FHWA. Totals paid at the pump may differ where a state also applies sales tax or additional fuel fees.