Indiana IFTA Calculator 2026 — Diesel Tax for Indianapolis & I-65 Routes

Calculate Your Indiana IFTA Tax

Indiana IFTA Rates & Trucking Overview 2026

Indiana's diesel tax rate of 63.0 cents per gallon is one of the highest in the Midwest. Indiana applies both a base motor carrier fuel surcharge and a variable component that adjusts to wholesale diesel prices. For drivers running I-65 between Chicago and Louisville, this creates a clear fuel stop opportunity: fill up in Louisville, KY (32.5¢) before heading north into Indiana — saving $45.75 per fill on a 150-gallon tank.

Indianapolis sits at the intersection of I-65 and I-70 with access to all major Midwest markets within a day's drive — making it a significant distribution hub. The Indiana Toll Road (I-80/90) adds separate per-axle costs on top of the IFTA fuel tax, making northern Indiana routes particularly expensive for trucks without Pre-Pass or E-ZPass.

Major Indiana Trucking Routes

I-65 (North-South): Kentucky border through Indianapolis north to Chicago. Primary automotive freight corridor and one of the busiest truck roads in the Midwest.
I-70 (East-West): Illinois border through Indianapolis east to Ohio. Major cross-country freight route.
I-80/I-90 (Indiana Toll Road): Illinois border east through Gary, South Bend to Ohio. Heavy truck traffic with separate toll costs.
I-74: Illinois border southeast through Indianapolis to Ohio. Less congested alternative for east-west freight.