How do toll roads affect trucking costs in Illinois?

The Illinois Tollway system (I-90, I-88, I-294, I-355) adds significant cost on top of IFTA fuel taxes. Commercial trucks pay per-axle tolls that can add $50-150 on a Chicago-area run. I-80 offers a toll-free east-west alternative through the south suburbs.

Illinois IFTA Calculator 2026 — Chicago Trucking Diesel Tax Rate

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Miles Driven in Illinois

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Illinois IFTA Rates & Chicago Freight Overview 2026

Illinois taxes include both a flat motor fuel tax and a sales tax component applied to diesel at the wholesale level. For Chicago-corridor freight, this adds meaningful cost on top of already-expensive tollway fees.

Chicago is the single most important freight junction in North America — over 50% of all US freight passes within 500 miles of Chicago.

Major Illinois Trucking Routes

I-80 (East-West, Chicago South): Iowa border east through Joliet, Chicago south suburbs to Indiana. The highest-volume commercial freight corridor in the US.
I-90/I-94 (Chicago Metro): Wisconsin border through Chicago to Indiana. Major urban congestion — plan for significant idle time and toll costs.
I-55 (Chicago to St. Louis): Chicago south through Springfield to the MO border.
I-70 (East-West, Southern IL): St. Louis border east through Effingham to Indiana. Less congested east-west alternative to I-80.

Illinois IFTA — Frequently Asked Questions

What is the Illinois IFTA diesel tax rate in 2026?

Illinois's IFTA diesel tax rate for 2026 is 73.8 cents per gallon. Illinois taxes diesel through both a motor fuel tax and a sales tax applied at the wholesale level.

How do tollway costs affect Illinois freight budgets?

The Illinois Tollway system (I-90, I-88, I-294, I-355) adds significant cost on top of the IFTA rate. Commercial trucks pay per-axle tolls running $50–150+ on a Chicago-area run. I-80 and I-74 offer toll-free alternatives that many drivers prefer for both cost and congestion reasons.

How do I register for IFTA in Illinois?

Illinois IFTA registration is handled by the Illinois Department of Revenue (IDOR). Register and file quarterly at mytax.illinois.gov. Due dates: Q1 (Jan–Mar) April 30, Q2 (Apr–Jun) July 31, Q3 (Jul–Sep) October 31, Q4 (Oct–Dec) January 31.

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Illinois IFTA Calculator 2026 — Chicago Diesel Tax Rate & Filing

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Illinois IFTA Rates & Chicago Freight Overview 2026

Major Illinois Trucking Routes

Illinois IFTA — Frequently Asked Questions

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