Not directly. This is one of the most common misunderstandings for contractors and trades business owners. Your monthly truck payment is not a deductible expense. But the truck itself and the loan interest are deductible, just through different mechanisms.

When you finance a truck, each payment has two pieces: principal and interest. The principal portion is paying down the loan balance. That’s not an expense. It’s reducing a liability on your balance sheet. The interest portion is deductible as a business expense. The cost of the truck gets deducted separately through depreciation.

Depreciation spreads the cost of the truck over its useful life, typically five years. But for most trucks used in construction and service work, you can often deduct the full purchase price in year one using Section 179 or bonus depreciation. A $55,000 truck could potentially be written off entirely in the year you buy it. That’s a much larger deduction than twelve monthly payments would be, and it’s why tax planning before the purchase matters so much. Timing a truck purchase in the right year can save thousands.

Business use percentage is the other piece. If you use the truck 75% for work and 25% for personal driving, you can only deduct 75% of depreciation and 75% of the interest. The IRS takes this seriously and they will ask for documentation in an audit.

You also need to choose between two methods for vehicle deductions. The actual expense method lets you deduct depreciation, gas, insurance, repairs, registration, and loan interest based on your business use percentage. The standard mileage rate gives a flat per-mile deduction (67 cents for 2024). Contractors driving heavy trucks typically come out ahead with actual expenses, but once you use Section 179 or bonus depreciation on a vehicle, you’re locked into the actual expense method for as long as you own it.

Keep a mileage log regardless of which method you use. Record the date, destination, miles, and business purpose for every trip. The IRS considers vehicle deductions a high-audit-risk area, and “I use it mostly for work” without documentation won’t hold up. Apps like MileIQ or Everlasting make this simple if you use them consistently.

Here’s where this connects to your books. The truck loan should be recorded as a liability, not an expense. Payments get split between principal reduction and interest expense. The truck goes on as a fixed asset and depreciation is calculated at year end. If your bookkeeping just records the full monthly payment as “truck expense,” your financial statements are wrong and you might be missing the depreciation deduction entirely. Proper bookkeeping for trades businesses captures these transactions correctly so nothing falls through the cracks when tax time comes.

The bottom line is that yes, you get tax benefits from a business truck. But the deduction comes from depreciation and interest, not from the payment itself. Getting this right in your books from the start saves you headaches later and makes sure you’re claiming every dollar you’re entitled to.