How HVUT Tax Categories Work
The Heavy Vehicle Use Tax (HVUT) is calculated based on the taxable gross weight of your vehicle. Understanding the tax categories helps you budget accurately and avoid overpayment.
What is Taxable Gross Weight?
Taxable gross weight is the total of: - The actual unloaded weight of the vehicle - The actual unloaded weight of any trailers typically used with the vehicle - The weight of the maximum load customarily carried
Tax Rate Schedule
The IRS uses the following rate schedule for the 2025 tax year:
| Weight Category | Taxable Gross Weight | Annual Tax |
|---|---|---|
| Category A | 55,000 lbs | $100 |
| Category B | 55,001 - 56,000 lbs | $122 |
| Category C | 56,001 - 57,000 lbs | $144 |
| Category D | 57,001 - 58,000 lbs | $166 |
| Category E | 58,001 - 59,000 lbs | $188 |
| ... | ... | ... |
| Maximum | 75,001+ lbs | $550 |
The tax increases by $22 for each 1,000-pound increment from 55,000 to 75,000 pounds.
Suspended Vehicles
Vehicles expected to travel fewer than 5,000 miles (7,500 for agricultural vehicles) during the tax period can be filed as "suspended." This means:
- No tax is due for the suspended period
- You still must file Form 2290 to report the vehicle
- If the vehicle exceeds the mileage limit, tax becomes due
Partial-Year Tax
If you first use a vehicle after July, you pay a prorated tax amount. The partial-year tax is calculated based on the month of first use:
- August first use: 11/12 of the annual tax
- September first use: 10/12 of the annual tax
- And so on through June (1/12 of the annual tax)
How to Calculate Your Fleet's Total Tax
- List all vehicles with gross weight over 55,000 lbs
- Determine the weight category for each vehicle
- Apply suspended status where applicable
- Calculate partial-year amounts for newly acquired vehicles
- Sum all individual vehicle taxes
TaxBundle's built-in tax calculator handles all of this automatically when you enter your vehicle details.