Delaware diesel tax rate is 22.0¢ per gallon for 2026. Calculate your quarterly IFTA fuel tax liability for Delaware routes and compare to neighboring states.
Delaware's 22.0¢/gal diesel rate is the lowest in the Northeast by a wide margin, making it a premier fueling stop for I-95 corridor drivers. The state is small geographically but punches above its weight in freight — the Port of Wilmington is the largest fresh fruit and juice import terminal on the East Coast.
I-95 (Wilmington–Newark–Maryland border, Northeast Corridor), I-295 (Delaware Memorial Bridge bypass), US-13 (Dover–Milford, primary north-south), US-40 (Salem NJ bridge corridor)
Many drivers running the I-95 Northeast Corridor deliberately top off in Delaware before entering Maryland (36.9¢), New Jersey (42.1¢), or Pennsylvania (74.1¢). Delaware has no sales tax, which makes fuel prices at the pump lower than neighboring states even beyond the excise rate difference.