Mississippi IFTA Calculator 2026 — Diesel Tax Rate & Filing

Calculate Your Mississippi IFTA Tax

Mississippi IFTA Rates & Trucking Overview 2026

Mississippi has the lowest IFTA diesel tax rate in the country at 18.4¢/gal — lower than Oklahoma and Missouri (both 29.5¢) and Texas (20.0¢). For any driver routing through Mississippi, fueling here is almost always the right call. Jackson is the state's primary freight hub at the I-20/I-55 interchange, connecting Memphis, New Orleans, and Atlanta.

Major Mississippi Trucking Routes

I-20 (Shreveport LA–Jackson–Birmingham AL, east-west), I-55 (Memphis TN–Jackson–New Orleans LA, north-south), I-59 (Meridian–Alabama), I-10 (Biloxi–Louisiana, Gulf Coast), I-220 (Jackson bypass), US-61 (Mississippi River Corridor)

The Gulf Coast corridor on I-10 through Biloxi connects to Louisiana (also 20.0¢) and Alabama (29.0¢). On east-west I-20 runs, fill up in Mississippi before entering Alabama (29.0¢) — a 10.6¢/gal difference. On I-55 north-south runs, Tennessee (27.4¢) to the north is 9¢ higher. Mississippi's ports on the Gulf and the Mississippi River handle significant agricultural exports, forest products, and petrochemicals.