Rhode Island IFTA Tax Rate — 2026

How Rhode Island IFTA tax is calculated

For every gallon of diesel your truck "burned" inside Rhode Island during the quarter, you owe $0.4000 in IFTA tax. The number of taxable gallons isn't the gallons you bought there — it's the miles you drove inside Rhode Island divided by your fleet's average miles-per-gallon for the whole quarter.

Your IFTA return then nets that against the Rhode Island fuel-tax you already paid at the pump on gallons purchased inside the state. If you ran more Rhode Island miles than you bought Rhode Island fuel, you owe the difference. If you bought more Rhode Island fuel than you ran Rhode Island miles, you get a refund or credit.

Common Rhode Island IFTA filing questions

• Do I file IFTA in Rhode Island if my home base is here? If your IFTA base jurisdiction is Rhode Island, you file your quarterly return with the Rhode Island Department of Revenue (or equivalent). Your filing covers every IFTA jurisdiction you ran in, not just Rhode Island.
• What if I only drove a few miles through Rhode Island? Every IFTA mile counts, even if you only crossed the state. Track them on your trip sheet or ELD report — you'll owe (or get refunded) Rhode Island's share whether you bought fuel here or not.
• What if Rhode Island fuel is cheaper than the IFTA tax? The IFTA rate above is what you owe per gallon "consumed" in Rhode Island. The pump price already includes Rhode Island's state fuel tax — that's what gets credited on your return. If you bought all your fuel in a low-tax state and drove all your miles in Rhode Island, you'll owe the full Rhode Island rate on those gallons at filing time.

Rhode Island IFTA filing deadlines

IFTA returns are due quarterly across all 48 contiguous U.S. states, including Rhode Island:

• Q1 (Jan–Mar): due April 30
• Q2 (Apr–Jun): due July 31
• Q3 (Jul–Sep): due October 31
• Q4 (Oct–Dec): due January 31

Late filings collect penalties even if you owe nothing — some states charge $50 minimum per late return. File on time even if your net due is $0.