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New Hampshire Gas Tax Calculator
New Hampshire charges 23.8¢/gal on gasoline and 23.8¢/gal on diesel (all state taxes and fees). Combined with the federal tax, drivers in New Hampshire pay 42.3¢/gal total on gasoline. The base excise rate is 22.2¢/gal.
NH gasoline (combined)
23.8¢
excise: 22.2¢
NH diesel (combined)
23.8¢
excise: 22.2¢
Federal gasoline tax
18.5¢
18.4¢ excise + 0.1¢ LUST
Combined (gas + federal)
42.3¢
Includes excise + all state fees and surcharges (23.8¢/gal).
Tax on 15 gallons of gasoline in New Hampshire(all fees)
Federal tax
$2.77
New Hampshire tax
$3.56
Total tax
$6.34
This calculator is for informational purposes only and does not constitute tax advice. Consult a qualified tax professional for your specific situation. Rates last verified June 2026.
Verify rates on New Hampshire Department of Safety — Petroleum Products Licensing FeesGas tax per fill-up in New Hampshire
State column uses the combined rate (23.8¢/gal, all fees). Excise-only rate is 22.2¢/gal.
| Tank size | State tax | Federal tax | Total tax |
|---|---|---|---|
| 10 gallons | $2.38 | $1.85 | $4.22 |
| 12 gallons | $2.85 | $2.22 | $5.07 |
| 15 gallons | $3.56 | $2.77 | $6.34 |
| 18 gallons | $4.27 | $3.33 | $7.60 |
| 20 gallons | $4.75 | $3.70 | $8.45 |
| 25 gallons | $5.94 | $4.63 | $10.56 |
| 30 gallons | $7.13 | $5.55 | $12.67 |
Gasoline only. State tax uses combined rate (all fees). Federal includes 18.4¢ excise + 0.1¢ LUST fee.
New Hampshire note: New Hampshire legally designates its fuel excise tax as a 'Road Toll'. The combined baseline represents the core 22.20-cent road toll plus the state's structural environmental components, which consist of the Oil Discharge Cleanup (ODD) fee and the Pollution Control (OPC) fee.