Wisconsin diesel tax rate is 32.9¢ per gallon for 2026. Calculate your IFTA fuel tax for Wisconsin routes and compare neighboring state rates.
Calculate Your Wisconsin IFTA Tax
Gallons consumed in Wisconsin→
Net taxable gallons→
Wisconsin tax rate (2026)→32.9¢/gal
Estimated Wisconsin IFTA→
Positive = amount owed to Wisconsin; negative = credit on your return.
Wisconsin IFTA Rates & Trucking Overview 2026
Wisconsin at 32.9¢/gal is slightly above average in the Midwest. Milwaukee is Wisconsin's largest freight market, driven by manufacturing (Harley-Davidson, Briggs & Stratton, Johnson Controls, Kohler), food and beverage (beer, dairy, meat processing), and its position as a Great Lakes port city. Madison generates significant healthcare, education, and state government freight.
Illinois at 46.7¢ to the south is 13.8¢ more expensive — fill up in Wisconsin before heading south on I-94 or I-90. Michigan at 26.3¢ and Minnesota at 28.5¢ are both slightly cheaper. Iowa (32.5¢) is nearly identical. Wisconsin's dairy industry — it's the #2 cheese producing state — generates significant refrigerated freight year-round.
Wisconsin IFTA — Frequently Asked Questions
What is Wisconsin's IFTA diesel tax rate in 2026?
Wisconsin's diesel rate is 32.9¢/gal. Illinois (46.7¢) to the south is the key comparison — fill up in Wisconsin before heading south. Michigan (26.3¢) and Minnesota (28.5¢) offer modest savings at those borders.
Who administers IFTA for Wisconsin-based carriers?
Wisconsin IFTA is administered by the DMV. File quarterly at dot.wi.gov. Wisconsin uses a standard quarterly filing schedule with typical IFTA due dates.
What manufacturing freight drives Wisconsin?
Harley-Davidson motorcycles, industrial engines (Kohler, Briggs & Stratton), power tools (Milwaukee Tool, SC Johnson), and paper products from the Fox Valley paper mills are major Wisconsin freight commodities. The Fox Valley (Appleton–Neenah–Oshkosh) is the center of the global tissue paper industry.
Are there weight restrictions on Wisconsin secondary roads?
Wisconsin has spring weight restrictions (typically March–mid-May) on many state highways and county roads. These are stricter than many states — county road restrictions can limit loads to as little as 5 tons per axle. Check WisDOT's Spring Weight Restrictions map at dot.wi.gov before dispatching off-interstate loads.
Fueling tip: Michigan at 26.3¢ saves 6.6¢/gal. Minnesota at 28.5¢ saves 4.4¢/gal. Illinois at 46.7¢ is much more expensive — fill completely in Wisconsin before heading south on I-94 or I-90 into Illinois.