Q4 2026 IFTA diesel rate

New Hampshire IFTA fuel tax rate, Q4 2026

NHNew Hampshire · diesel$0.2220/gal

Unchanged from Q3 2026.

Checked 2026-10-14 against administration.dos.nh.gov, New Hampshire's own published rate.

Calculate New Hampshire for Q4 2026Free. No account.

What you owe New Hampshire

IFTA apportions your fuel by miles. Divide total miles by total gallons for fleet MPG, turn your New Hampshire miles into taxable gallons, subtract the tax-paid gallons you bought in New Hampshire, and multiply by $0.2220.

Example: 1,000 miles in New Hampshire at 6.5 MPG is 153.85 taxable gallons. With 100 tax-paid gallons bought there, 53.85 × $0.2220 = $11.95 owed to New Hampshire.

This rate is for diesel, Q4 2026. You still file with your base jurisdiction; keep your trip records and receipts.