What counts as a suspended vehicle on Form 2290?
A suspended vehicle (Category W) is a taxable highway vehicle expected to run 5,000 miles or less on public highways during the tax period (7,500 for agricultural vehicles). You still file Form 2290 — you just claim Category W and owe zero tax on that vehicle.
The 5,000-mile threshold is total highway miles, not loaded miles. Off-road, farm-use, and private-property miles do not count. The tax period runs July 1 through June 30, so the 5,000 miles is measured across the full federal tax year.
Suspended vehicles are most common in three contexts: seasonal operations (agricultural and oilfield equipment that runs only part of the year), backup or spare equipment that rarely leaves the yard, and stored or out-of-service vehicles still registered with the state DMV.
The carrier still has to file Form 2290 for the suspended vehicle. Filing it lets the state DMV match a stamped Schedule 1 to the registered vehicle (DMVs require a Schedule 1 for IRP renewal regardless of whether tax was paid).
If the vehicle exceeds the 5,000-mile threshold mid-year, the carrier has to file a Form 2290 amendment within the month following exceedance. The amendment recalculates the tax due as if the vehicle had been taxable from first-use; the IRS bills the difference.