What is the utah gas tax 2025 — 37.9¢/gallon?
In short
Utah charges 37.9¢ per gallon in state gas tax. Drive 15,000 miles a year at 28 MPG and you'll pay around $203/year in state tax alone. Utah ties its 37.9¢/gal rate to wholesale fuel prices, so it can rise or fall each year — it actually fell for 2026.
This page shows Utah's current state gas tax (37.9¢/gal) and works out how much state fuel tax you pay from your annual mileage and MPG. A single statewide motor-fuel excise of 37.9¢ (2026); Utah applies no general sales tax to gasoline. It excludes the 18.4¢/gal federal excise.
How to use this calculator
- 1Utah's 37.9¢/gal state rate is pre-filled.
- 2Put in your annual mileage.
- 3Enter your vehicle's fuel economy (MPG).
- 4Read your annual gallons used and the Utah state gas tax you pay.
The formula
- cents/gallon
- — Utah state rate: 37.9¢ (all-in state-level ≈ 37.9¢)
- annual gallons
- — Annual miles ÷ MPG
- state tax paid
- — Gallons × state cents ÷ 100
- federal tax
- — 18.4¢/gal — the same in every state
Worked example
The scenario
15,000 miles/year at 28 MPG in Utah (37.9¢/gal).
The result
15,000 ÷ 28 = 536 gallons. State gas tax = 536 × $0.3790 = $203/year. With the federal 18.4¢ that's about $302 of fuel tax for the year.
Common use cases
- Seeing how much of your fuel spending goes to Utah gas tax
- Comparing fuel-tax cost between states before relocating
- because the formula tracks wholesale prices, Utah's rate actually fell to 37.9¢ for 2026 — a 1.55% decrease
- unlike Illinois or Hawaii, Utah applies no general sales/excise tax on gasoline beyond the per-gallon fuel tax
Limitations & assumptions
- The 18.4¢/gal federal gas tax is not included — combined with Utah's state rate it's 56.3¢/gal.
- Utah has no local per-gallon gas tax, but a single statewide motor-fuel excise of 37.9¢ (2026); Utah applies no general sales tax to gasoline.
- Rates change: The rate decreased to 37.9¢ effective Jan 1, 2026 (down ~0.6¢) after the formula recalculation, having been 38.5¢ in 2025.
- Use it for budgeting — the tax portion is fixed, the rest of the pump price varies.
Frequently asked questions
What is the gas tax in Utah?
How much gas tax do I pay per year in Utah?
Is Utah's gas tax fixed or does it change?
Are there local gas taxes in Utah?
Where does Utah's gas-tax money go?
Disclaimer: KalkWise calculators are provided for general informational and educational purposes only and do not constitute financial, investment, tax, or legal advice. Results are estimates based on the figures you enter and the assumptions described above. Actual outcomes will vary. Consult a qualified professional before making financial decisions.