IFTA Tax Rates in Wisconsin (2026)

Key numbers at a glance

IFTA tax rates in Wisconsin

Rates below are as of Q4 2026 — confirm the current official IFTA matrix before filing. Wisconsin is jurisdiction code 55 on your IFTA return.

The twenty-year flatline is the story. While states around it index (Virginia adds roughly a cent every July 1) or run holiday experiments (Utah cut gasoline 15 percent for six months in 2026), Wisconsin's rate has not budged since 2006, according to September 2026 reporting from Wisconsin Watch and Wisconsin Public Radio. When other states suspended gas taxes in 2026, Wisconsin kept its 30.9 cents; changing it would require legislative action. That means two things for your paperwork: last quarter's Wisconsin rate is almost certainly this quarter's, and the state is a reliable mid-band benchmark — cheaper than West Virginia's 35.7 cents and Virginia's 33.6 on diesel, dearer than Tennessee's 21, and far under Washington's 59.5.

In dollars per 1,000 miles at 6.5 MPG (153.8 gallons): Wisconsin takes $47.54, against $54.92 in West Virginia, $51.69 in Virginia, $36.92 in Wyoming and $91.54 in Washington. Per mile, budget about 4.8 cents for the state fuel tax line. Put your own routes through the IFTA calculator and compare every jurisdiction on the IFTA rates by state hub.

How Wisconsin IFTA affects your filings

The Wisconsin Department of Revenue administers IFTA in the state — licensing, decals and the quarterly return — and its fuel tax guidance covers tax-free transactions in gasoline and diesel that matter for how you structure purchases. If Wisconsin is your base state, you file one return covering all member jurisdictions; if you are passing through on I-94 toward Chicago or I-90 toward the Twin Cities, your Wisconsin miles simply appear as jurisdiction code 55 with the gallons your ELD or GPS records support.

Because Wisconsin's rate sits within a couple of cents of its neighbors, cross-border fueling on the state line is close to a wash on the tax line — shop net pump price rather than chasing a rate edge measured in fractions of a cent per gallon. The one move with real payoff: if your run continues into high-tax Washington or Utah territory later in the quarter, topping off in Wisconsin at 30.9 cents means owing the difference on those miles rather than prepaying more — the return will collect it either way, so pick the side that keeps cash in your tank, not the state's. Accrue about 4.8 cents per mile and confirm your fuel surcharge recovers it.

The calendar is the same everywhere, and zero-net quarters still file:

Records close the loop: fuel receipts without gaps, per-state distance records that reconcile to them, your MPG calculation, and the returns themselves — auditors typically ask for four consecutive quarters. Before each filing, verify the Wisconsin line on the IFTA Inc. quarterly matrix or the Wisconsin Department of Revenue fuel tax pages; twenty years of stability is a trend, not a guarantee.