Truck payments are tax deductible for business, but not always in the way people expect. If you lease the truck, the business-use portion of each monthly payment is deductible under the actual expense method. If you financed the purchase, the payment itself isn’t the deduction: the principal is just loan repayment, but the interest and the truck’s depreciation are both deductible. And for heavy trucks over 6,000 pounds, Section 179 and bonus depreciation can let you write off the entire purchase price in the first year.
The rest of this comes down to three variables: lease or loan, how much of your driving is for business, and which deduction method you pick.
Lease Payments
If you lease your truck and use the actual expense method, the business portion of your monthly lease payment is deductible. A driver paying $650 per month with 80 percent business use would deduct $520 per month, or $6,240 for the year. That gets added to the business share of fuel, insurance, and maintenance for the total.
There is one wrinkle for expensive vehicles. The IRS requires a “lease inclusion amount” that reduces your deduction when the truck’s fair market value at the start of the lease exceeds a threshold. For leases beginning in 2026, that threshold is $62,000.1Internal Revenue Service. Rev. Proc. 2026-15 – Depreciation Limitations and Lease Inclusion Amounts The add-back is small in early years and grows over time. This rule applies only to passenger automobiles, so trucks over 6,000 pounds gross vehicle weight that aren’t built primarily to carry passengers are generally exempt.
Loan Payments on a Financed Truck
When you finance a truck, the monthly payment itself is not the deduction. The principal portion is simply repaying the loan and is never deductible. Two other things are.
The interest on the loan is deductible. Your lender sends a year-end statement showing how much interest you paid. Multiply that by your business-use percentage and it goes on your return as a business expense.
Depreciation accounts for the truck’s loss in value over time. Most trucks fall into the five-year property class, so the cost is spread across roughly six tax years.2Internal Revenue Service. href=”https://www.irs.gov/publications/p946″ target=”_blank” rel=”noopener”>Publication 946 (2024), How To Depreciate Property For trucks the IRS classifies as passenger automobiles, annual depreciation is capped. Trucks placed in service in 2026 with bonus depreciation are limited to $20,300 in year one, $19,800 in year two, $11,900 in year three, and $7,160 per year after that until fully depreciated. Without bonus depreciation, the year-one cap drops to $12,300.1Internal Revenue Service. Rev. Proc. 2026-15 – Depreciation Limitations and Lease Inclusion Amounts
Those caps apply only to lighter trucks. Heavy trucks escape them entirely, and that is where the real tax advantage lives.
Writing Off a Heavy Truck in One Year
Trucks with a gross vehicle weight rating over 6,000 pounds are not subject to the passenger automobile depreciation caps. Two provisions handle the heavy lifting: Section 179 expensing and bonus depreciation.
Section 179 lets you deduct the full purchase price of a qualifying truck in the year you place it in service rather than spreading the cost across multiple years. For 2026, the maximum Section 179 deduction is $2,560,000, with a phase-out that begins when total equipment purchases exceed $4,090,000. Work trucks and cargo vans over 6,000 pounds with a bed length of six feet or more generally qualify for the full deduction with no vehicle-specific cap.
Heavy SUVs get worse treatment. If the vehicle is over 6,000 pounds but designed primarily to carry passengers, the Section 179 deduction is capped at $32,000 for 2026. The remaining cost can then be depreciated using bonus depreciation and regular MACRS schedules.
Bonus depreciation covers the cost that Section 179 doesn’t. The One Big Beautiful Bill Act permanently restored 100 percent bonus depreciation for qualified property acquired and placed in service after January 19, 2025. For a contractor who buys a $65,000 heavy-duty pickup in 2026 and uses it 90 percent for work, the combination of Section 179 and bonus depreciation can make 90 percent of the purchase price deductible in year one.
Standard Mileage Rate as an Alternative
Everything above assumes the actual expense method. The other option is the standard mileage rate, which for 2026 is 72.5 cents per business mile.3Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents per Mile, up 2.5 Cents You multiply business miles by the rate, and the result is your deduction. That single number is designed to cover gas, insurance, maintenance, and depreciation together, so under the mileage method you cannot separately deduct your lease payments, your loan interest, or actual repair costs. Payments don’t factor in at all.
The switching rules matter. If you own the truck, you must use the standard mileage rate in the first year the vehicle is available for business use if you ever want to use that method for that truck. You can switch to actual expenses in later years. Start with actual expenses in year one, though, and you’re locked out of the mileage rate for that vehicle permanently. For a leased truck, whichever method you pick in the first year must be used for the entire lease term, including any renewals.3Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate at 72.5 Cents per Mile, up 2.5 Cents
Business Use and the 50 Percent Threshold
Every deduction discussed here runs through your business-use percentage. If you drove the truck 12,000 miles in the year and 9,000 of those were for work, your business-use percentage is 75 percent. That fraction of your lease payments, loan interest, depreciation, fuel, and repairs is deductible. The rest is personal and off-limits.
Driving between job sites, hauling equipment, meeting clients, and making deliveries all count as business use. Commuting from home to your regular workplace does not. If you have a qualifying home office that serves as your principal place of business, trips from home to other work locations count as business miles rather than commuting.
There is a separate threshold that matters if you want to use Section 179, bonus depreciation, or accelerated MACRS depreciation: the truck must be used more than 50 percent for business in the year it’s placed in service. If you clear that in year one but drop to 50 percent or below in a later year, two things happen. You must recapture the excess depreciation you claimed (the IRS compares what you deducted against what you would have been allowed under straight-line depreciation, and the difference is added back to income), and all future depreciation on the truck must use the slower straight-line method.4Internal Revenue Service. Publication 946 (2024), How To Depreciate Property Claim a $55,000 Section 179 deduction on a heavy truck and then convert it to mostly personal use two years later, and the recapture bill can be substantial.
Recapture When You Sell
Every dollar of depreciation you deduct during ownership reduces the truck’s tax basis. That makes any gain on sale larger, and under Section 1245, gain up to the total depreciation you previously claimed is taxed as ordinary income rather than at the lower capital gains rate.5Internal Revenue Service. Publication 544 (2025), Sales and Other Dispositions of Assets Trading the truck in doesn’t sidestep this. The Tax Cuts and Jobs Act eliminated like-kind exchanges for anything except real estate, so a trade-in is now treated as a sale that triggers the same recapture.
Records You Need
Federal regulations require you to record the date of each business trip, the mileage driven, and the business purpose.6eCFR. 26 CFR 1.274-5T – Substantiation Requirements (Temporary) A log kept at or near the time of each trip is the standard. Reconstructing one at tax time from memory tends to fail under scrutiny.
For the actual expense method, you also need year-end interest statements from your lender, copies of the lease agreement, and receipts for fuel, repairs, tires, insurance, and registration. Missing receipts mean missing deductions. Keep everything for at least three years after filing; if you underreport income by more than 25 percent of gross income, the IRS has six years to audit you.7Internal Revenue Service. How Long Should I Keep Records If the IRS disallows truck expenses for inadequate records, you owe the unpaid tax plus an accuracy-related penalty of 20 percent of the underpayment.8Internal Revenue Service. Accuracy-Related Penalty
Where This Goes on Your Return, and Who Can Actually Claim It
Self-employed operators and independent contractors report vehicle expenses on Schedule C, which flows into Form 1040. The vehicle section asks for total miles, business miles, and whether you have written evidence to back the deduction.
W-2 employees face a real limit here. After the Tax Cuts and Jobs Act eliminated unreimbursed employee business expenses for most workers, Form 2106 is available only to Armed Forces reservists, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses.9Internal Revenue Service. 2025 Instructions for Form 2106 – Employee Business Expenses If you’re an employee driving a company truck and your employer doesn’t reimburse you, you generally cannot deduct those costs on your federal return unless you fall into one of those narrow categories. The deduction framework in this article is built for self-employed truck operators and business owners, not for employees using a truck for their W-2 job.