Form 2290 for Flatbed, Step Deck, and Lowboy Trucks

Open deck freight covers a lot of ground, from a light flatbed load of lumber to an oversize machine on a lowboy. The Heavy Vehicle Use Tax treats all of it the same way, by taxable gross weight, so where your rig lands depends on the deck you pull and what rides on it.

Does open deck freight file Form 2290?

A flatbed, step deck, or lowboy tractor files Form 2290 when its taxable gross weight reaches 55,000 pounds and it runs on public highways. A loaded flatbed or step deck combination clears that line in most over the road work, and lowboy or removable gooseneck heavy haul almost always does, because the loads are heavy by definition.

Deck and load set the category

Taxable gross weight is the tractor fully equipped, plus the trailer it customarily pulls, plus the heaviest load carried. A step deck weighs a little more empty than a plain flatbed, and a lowboy or RGN built for machinery weighs more still, so the trailer itself already pushes you up before the freight is loaded. Add a dense load of steel, equipment, or machinery and heavy haul rigs sit near the top weight category with its full annual tax. Use your real running weight to pick the right category.

Where each one usually lands

• Flatbed with a typical load: files when the loaded combination reaches 55,000 pounds, which most over the road flatbeds do.
• Step deck: similar to a flatbed, slightly heavier empty, files when loaded past the line.
• Lowboy, RGN, or heavy haul: almost always files, and usually in the top weight category.

Oversize and permits are separate

Oversize and overweight permits from your state cover the size and weight of the load on the road. They are separate from the federal Heavy Vehicle Use Tax on Form 2290. If your rig is 55,000 pounds or more, you still file Form 2290 and keep the stamped Schedule 1 for registration, on top of any trip or oversize permits you carry.

Source

The weight threshold and taxable gross weight definition come from the IRS Instructions for Form 2290 (irs.gov/instructions/i2290).