DE Diesel Rate: $0.220/gallon
Calculate your IFTA fuel tax for miles driven in Delaware. Current rate $0.220/gallon, effective 2026-04-01–2026-06-30. Add other states you traveled through for a complete quarterly return.
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Routes, regulations, and fuel strategy for Delaware — current rate $0.220/gallon
Delaware may be the second-smallest state in the country, but its location on the I-95 corridor makes it a significant freight choke point. I-95 runs through the northern tip of the state connecting Philadelphia to Baltimore, and the Delaware Memorial Bridge over the Delaware River is one of the most critical freight chokepoints in the Mid-Atlantic region. I-295 provides a bypass for southbound freight. US-13 runs the length of Delaware through Dover and Wilmington and carries significant regional freight for the chicken processing industry that dominates the Delmarva Peninsula.
Delaware's IFTA rate of $0.220 per gallon is one of the lower rates in the Northeast. Compare that against neighboring Pennsylvania at $0.746 — one of the highest in the nation — and Maryland at $0.369. This makes Delaware an extremely attractive fueling location for I-95 corridor runs. Fill up completely at any Delaware truck stop before crossing into Pennsylvania, as the tax difference between $0.220 and $0.746 is $0.526 per gallon — on a 150-gallon fill, that's $78.90 in tax savings per fuel stop.
Standard weight limits in Delaware are 80,000 lbs on federal routes. The Delaware Memorial Bridge has weight restrictions enforced by toll plaza weight enforcement — oversized or overweight loads must obtain permits from DelDOT. The Chesapeake and Delaware Canal bridge crossings have height and weight limits that affect some routes through central Delaware.
The Port of Wilmington is an active bulk and refrigerated cargo facility that generates regular reefer and flatbed activity. For IFTA compliance, Delaware's low rate means you'll likely show a net refund if you're fueling here and running miles in higher-rate states like Pennsylvania and New Jersey — maintain accurate odometer and fuel purchase records to capture that refund correctly on your quarterly filing.
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